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Photocatalytic hydrogen evolution reaction (PC-HER) provides a solution to energy crisis and environmental pollution. Herein, different graphitic carbon nitride (g-C3N4)-based van der Waals (vdW) type II homojunctions have been fabricated and g-C3N4/K-doped g-C3N4 nanosheets have an outstanding PC-HER rate of 1,243 µmol-h−1·g−1 under visible light, higher than that of bulk g-C3N4, doped g-C3N4 nanosheets, and mixed nanosheets. The enhanced PC-HER performance can be ascribed to the cooperative effects of the shortened bandgap, enlarged specific surface area, matched type II energy band structure, “face to face” vdW charge interaction, and peculiarly partite positions of the conduction and valence bands in different layers. Besides, the type II junctions were found superior to binary type II junction. This study highlights the synergistic effect of different strategies in improving the PC-HER capacities of g-C3N4, especially the application of particular vdW junctions, and provides new insights to the structures and mechanism.
Xiaojie Li; Panpan Zhang; Huayang Zhang; Wenjie Tian; Yangyang Yang; Kunsheng Hu; Dechao Chen; Qin Li; Xiaoguang Duan; Hongqi Sun; Shaobin Wang. van der Waals type II carbon nitride homojunctions for visible light photocatalytic hydrogen evolution. Nano Research 2021, 1 -9.
AMA StyleXiaojie Li, Panpan Zhang, Huayang Zhang, Wenjie Tian, Yangyang Yang, Kunsheng Hu, Dechao Chen, Qin Li, Xiaoguang Duan, Hongqi Sun, Shaobin Wang. van der Waals type II carbon nitride homojunctions for visible light photocatalytic hydrogen evolution. Nano Research. 2021; ():1-9.
Chicago/Turabian StyleXiaojie Li; Panpan Zhang; Huayang Zhang; Wenjie Tian; Yangyang Yang; Kunsheng Hu; Dechao Chen; Qin Li; Xiaoguang Duan; Hongqi Sun; Shaobin Wang. 2021. "van der Waals type II carbon nitride homojunctions for visible light photocatalytic hydrogen evolution." Nano Research , no. : 1-9.
Design of highly efficient heterojunctions for photocatalytic hydrogen evolution is of significant importance to address the energy shortage and environmental crisis. Nevertheless, the smart design of semiconductor-based heterojunctions at the atomic scale still remains a significant challenge hitherto. Herein, we report novel atomic CdS/ZnIn2S4 heterojunctions by in-situ epitaxially growing 2D ZnIn2S4 nanosheets onto the surface of 1D defective CdS nanorods. The strong electronic coupling between defective CdS and ZnIn2S4 is confirmed by transient photocurrent response measurements, •O2− and •OH radicals experiments, and PL results, leading to accelerated interfacial charge separation and transfer. Additionally, the elevated charge transfer and electronic coupling are further confirmed by theoretical calculations. Consequently, CdS/ZnIn2S4 hybrids exhibit superior photocatalytic hydrogen generation activity to pristine CdS. Our findings offer a new paradigm for designing atomic 1D/2D heterojunctions for efficient solar-driven energy conversion.
Pan Li; Manli Liu; Jieqiong Li; Junling Guo; Qingfeng Zhou; Xiaoli Zhao; Shuaijun Wang; Lijing Wang; Junmei Wang; Ya Chen; Jinqiang Zhang; Qi Shen; Peng Qu; Hongqi Sun. Atomic heterojunction-induced accelerated charge transfer for boosted photocatalytic hydrogen evolution over 1D CdS nanorod/2D ZnIn2S4 nanosheet composites. Journal of Colloid and Interface Science 2021, 604, 500 -507.
AMA StylePan Li, Manli Liu, Jieqiong Li, Junling Guo, Qingfeng Zhou, Xiaoli Zhao, Shuaijun Wang, Lijing Wang, Junmei Wang, Ya Chen, Jinqiang Zhang, Qi Shen, Peng Qu, Hongqi Sun. Atomic heterojunction-induced accelerated charge transfer for boosted photocatalytic hydrogen evolution over 1D CdS nanorod/2D ZnIn2S4 nanosheet composites. Journal of Colloid and Interface Science. 2021; 604 ():500-507.
Chicago/Turabian StylePan Li; Manli Liu; Jieqiong Li; Junling Guo; Qingfeng Zhou; Xiaoli Zhao; Shuaijun Wang; Lijing Wang; Junmei Wang; Ya Chen; Jinqiang Zhang; Qi Shen; Peng Qu; Hongqi Sun. 2021. "Atomic heterojunction-induced accelerated charge transfer for boosted photocatalytic hydrogen evolution over 1D CdS nanorod/2D ZnIn2S4 nanosheet composites." Journal of Colloid and Interface Science 604, no. : 500-507.
Environmental remediation has become more effective when using nanotechnologies. In this study, iron oxide (α-Fe2O3) nanospheres with different cobalt doping levels (xCo-Fe2O3) were synthesised and applied in the heterogeneous activation of peroxymonosulfate (PMS) for the degradation of p-hydroxybenzoic acid (p-HBA). The catalyst (3Co-Fe2O3) with 3% Co doping exhibits the best performance for PMS activation, possibly because of the larger specific surface area and the tailored catalyst surface as confirmed by X-ray photoelectron spectroscopy (XPS). Reaction parameters were investigated to optimise the degradation efficiency. The metal ions leaching tests confirmed the higher stability of the catalyst, thanks to the leaching suppression by the doping of Co2+. The main contribution of free radicals (SO4•- and •OH) was confirmed by electron paramagnetic resonance (EPR) spectra, whereas partial contribution of oxygen anions and singlet oxygen (O2•-, 1O2) was observed during the quenching tests. Finally, a radical based degradation mechanism was proposed for the removal of p-HBA. It is expected to open up a novel perspective for the application of iron oxide as a potential catalyst for the removal of emerging contaminants.
Abdul Hannan Asif; Nasir Rafique; Rajan Arjan Kalyan Hirani; Hong Wu; Lei Shi; Hongqi Sun. Heterogeneous activation of peroxymonosulfate by Co-doped Fe2O3 nanospheres for degradation of p-hydroxybenzoic acid. Journal of Colloid and Interface Science 2021, 604, 390 -401.
AMA StyleAbdul Hannan Asif, Nasir Rafique, Rajan Arjan Kalyan Hirani, Hong Wu, Lei Shi, Hongqi Sun. Heterogeneous activation of peroxymonosulfate by Co-doped Fe2O3 nanospheres for degradation of p-hydroxybenzoic acid. Journal of Colloid and Interface Science. 2021; 604 ():390-401.
Chicago/Turabian StyleAbdul Hannan Asif; Nasir Rafique; Rajan Arjan Kalyan Hirani; Hong Wu; Lei Shi; Hongqi Sun. 2021. "Heterogeneous activation of peroxymonosulfate by Co-doped Fe2O3 nanospheres for degradation of p-hydroxybenzoic acid." Journal of Colloid and Interface Science 604, no. : 390-401.
N-Doped graphene-like carbon was prepared via a metal-free method. Electrophilic oxygen and nitrogen species functioned as dual active sites to activate peroxymonosulfate to convert alcohol into aldehyde or ketone by radical and non-radical routes.
Jiaquan Li; Hongqi Sun; Shaobin Wang; Yu Dong; Shaomin Liu. Selective oxidation of alcohols by graphene-like carbon with electrophilic oxygen and integrated pyridinic nitrogen active sites. Nanoscale 2021, 13, 12979 -12990.
AMA StyleJiaquan Li, Hongqi Sun, Shaobin Wang, Yu Dong, Shaomin Liu. Selective oxidation of alcohols by graphene-like carbon with electrophilic oxygen and integrated pyridinic nitrogen active sites. Nanoscale. 2021; 13 (30):12979-12990.
Chicago/Turabian StyleJiaquan Li; Hongqi Sun; Shaobin Wang; Yu Dong; Shaomin Liu. 2021. "Selective oxidation of alcohols by graphene-like carbon with electrophilic oxygen and integrated pyridinic nitrogen active sites." Nanoscale 13, no. 30: 12979-12990.
Benzaldehyde (BzH) is an important chemical for industrial feedstock. However, the conventional production processes heavily rely on precious metal catalysts and bring about unavoidable pollution issues. Here we report a new catalytic process to use N-doped graphene oxide (NGO) as the catalyst for oxidation of benzyl alcohol (BzOH) into BzH by an environmentally benign oxidant, peroxymonosulfate (PMS). Different approaches are developed to synthesize carbonylated NGO, which shows higher catalytic efficiency than CO-deficient NGO. The optimized catalyst could achieve 96% BzOH conversion and unprecedented 82% BzH yield under mild temperature (50 °C), superior to some precious metal catalysts reported. Experimental studies unveil the indispensable roles of pyridinic N and ketonic CO groups in forming an electron bridge between BzOH and PMS for non-radical oxidation, or separately inducing radical oxidation. The non-radical oxidation process is more selective in yielding BzH. Furthermore, the yielded BzH is free from over-oxidation into benzoic acid under various reaction conditions, because the radicals preferentially react with BzOH other than BzH and the BzH can hardly adsorb on graphene sheets, thus inhibiting its further oxidation. This work provides a cheap material and mechanic understanding of carbocatalysis for green organic synthesis with environmental and economic perspectives.
Jiaquan Li; Fuping Li; Qi Yang; Shaobin Wang; Hongqi Sun; Qingning Yang; Junwang Tang; Shaomin Liu. Tailoring collaborative N-O functionalities of graphene oxide for enhanced selective oxidation of benzyl alcohol. Carbon 2021, 182, 715 -724.
AMA StyleJiaquan Li, Fuping Li, Qi Yang, Shaobin Wang, Hongqi Sun, Qingning Yang, Junwang Tang, Shaomin Liu. Tailoring collaborative N-O functionalities of graphene oxide for enhanced selective oxidation of benzyl alcohol. Carbon. 2021; 182 ():715-724.
Chicago/Turabian StyleJiaquan Li; Fuping Li; Qi Yang; Shaobin Wang; Hongqi Sun; Qingning Yang; Junwang Tang; Shaomin Liu. 2021. "Tailoring collaborative N-O functionalities of graphene oxide for enhanced selective oxidation of benzyl alcohol." Carbon 182, no. : 715-724.
Three-dimensional (3D) graphene-based macrostructures are being developed to combat the issues associated with two-dimensional (2D) graphene materials in practical applications. The 3D macrostructures (3DMs), for example, membranes, fibres, sponges, beads, and mats, can be formed by the self-assembly of 2D graphene-based precursors with exceptional surface area and unique chemistry. With rational design, the 3D macrostructures can then possess outstanding properties and exclusive structures. Thanks to various advantages, these macrostructures are competing in a variety of applications with promising performances unlike the traditional activated carbons, biochars and hydrochars, which have less flexibilities for modifications towards versatile applications. However, despite having such a wide range of applications, 3DMs remain applicable on laboratory scale due to the associated factors like cost and extensive research. This perspective provides an overview of available graphene-based macrostructures and their diverse synthesis protocols. In the synthesis, hydrothermal route, chemical vapor deposition (CVD), wet spinning, 3D printing, vacuum filtration, spray drying and emulsion methods are highlighted. In addition, the physio-chemical properties of these macrostructures are discussed with the relationship among the porosity, surface area and the bulk density. The perspective also highlights the versatile potentials of different 3DMs in wastewater remediation by adsorption, desalination, and catalytic oxidation, etc. Following the concluding remarks, future outlooks on commercial applications of 3DMs are also provided.
Rajan Arjan Kalyan Hirani; Abdul Hannan Asif; Nasir Rafique; Lei Shi; Shu Zhang; Hong Wu; Hongqi Sun. Wastewater Remediation Technologies Using Macroscopic Graphene-Based Materials: A Perspective. Frontiers in Nanotechnology 2021, 3, 1 .
AMA StyleRajan Arjan Kalyan Hirani, Abdul Hannan Asif, Nasir Rafique, Lei Shi, Shu Zhang, Hong Wu, Hongqi Sun. Wastewater Remediation Technologies Using Macroscopic Graphene-Based Materials: A Perspective. Frontiers in Nanotechnology. 2021; 3 ():1.
Chicago/Turabian StyleRajan Arjan Kalyan Hirani; Abdul Hannan Asif; Nasir Rafique; Lei Shi; Shu Zhang; Hong Wu; Hongqi Sun. 2021. "Wastewater Remediation Technologies Using Macroscopic Graphene-Based Materials: A Perspective." Frontiers in Nanotechnology 3, no. : 1.
In this work, solar-heating-induced temperature-based photocatalytic hydrogen evolution reaction (PC-HER) of different photocatalysts (TiO2 P25, g-C3N4, and their loaded Pt) was comprehensively studied and analyzed with the assistance of a series of temperature-based in situ characterizations. It was found that pristine TiO2 P25 and g-C3N4 displayed enhanced PC-HER performances with increasing temperature (25–65 °C), while their loaded Pt nanoparticles (NPs) demonstrated a different behavior under ultraviolet (UV) or visible irradiation, presenting the highest hydrogen evolution rate at 35 °C. More interestingly, Pt NPs-g-C3N4 showed increasing PC-HER performances from 25 to 65 °C under visible light irradiation. Characterizations suggested that lowered electrical impedance, reduced band gap, increased light absorption, and elongated photoelectron lifetime with increased temperature are beneficial for improved PC-HER. However, agglomeration of Pt NPs significantly deteriorated the PC-HER performance at higher temperature and UV light can aggravate the thermal agglomeration of Pt NPs.
Xiaojie Li; Jingkai Lin; Jiaquan Li; Huayang Zhang; Xiaoguang Duan; Hongqi Sun; Yingping Huang; Yanfen Fang; Shaobin Wang. Temperature-Induced Variations in Photocatalyst Properties and Photocatalytic Hydrogen Evolution: Differences in UV, Visible, and Infrared Radiation. ACS Sustainable Chemistry & Engineering 2021, 9, 7277 -7285.
AMA StyleXiaojie Li, Jingkai Lin, Jiaquan Li, Huayang Zhang, Xiaoguang Duan, Hongqi Sun, Yingping Huang, Yanfen Fang, Shaobin Wang. Temperature-Induced Variations in Photocatalyst Properties and Photocatalytic Hydrogen Evolution: Differences in UV, Visible, and Infrared Radiation. ACS Sustainable Chemistry & Engineering. 2021; 9 (21):7277-7285.
Chicago/Turabian StyleXiaojie Li; Jingkai Lin; Jiaquan Li; Huayang Zhang; Xiaoguang Duan; Hongqi Sun; Yingping Huang; Yanfen Fang; Shaobin Wang. 2021. "Temperature-Induced Variations in Photocatalyst Properties and Photocatalytic Hydrogen Evolution: Differences in UV, Visible, and Infrared Radiation." ACS Sustainable Chemistry & Engineering 9, no. 21: 7277-7285.
Graphitic carbon nitride (g-C3N4), a polymeric semiconductor, has become a rising star for photocatalytic energy conversion because of its facile accessibility, metal-free nature, low cost, and environmentally benign properties. This work reviews the latest progress of g-C3N4-based materials in visible-light-driven water splitting to hydrogen. It begins with a brief history of g-C3N4, followed by various engineering strategies of g-C3N4, such as elemental doping, copolymerization, crystalline tailoring, surface engineering, and single-atom modification, for elevated photocatalytic water decomposition. In addition, the synthesis of g-C3N4 in different dimensions (0D, 1D, 2D, and 3D) and configurations of a series of g-C3N4-based heterojunctions (type II, Z-scheme, S-scheme, g-C3N4/metal, and g-C3N4/carbon heterojunctions) were also discussed for their improvement in photocatalytic hydrogen production. Lastly, the challenges and opportunities of g-C3N4-based nanomaterials are provided. It is anticipated that this review will promote the further development of the emerging g-C3N4-based materials for more efficiency in photocatalytic water splitting to hydrogen.
Shuaijun Wang; Jinqiang Zhang; Bin Li; Hongqi Sun; Shaobin Wang. Engineered Graphitic Carbon Nitride-Based Photocatalysts for Visible-Light-Driven Water Splitting: A Review. Energy & Fuels 2021, 35, 6504 -6526.
AMA StyleShuaijun Wang, Jinqiang Zhang, Bin Li, Hongqi Sun, Shaobin Wang. Engineered Graphitic Carbon Nitride-Based Photocatalysts for Visible-Light-Driven Water Splitting: A Review. Energy & Fuels. 2021; 35 (8):6504-6526.
Chicago/Turabian StyleShuaijun Wang; Jinqiang Zhang; Bin Li; Hongqi Sun; Shaobin Wang. 2021. "Engineered Graphitic Carbon Nitride-Based Photocatalysts for Visible-Light-Driven Water Splitting: A Review." Energy & Fuels 35, no. 8: 6504-6526.
Carbon catalysts have been widely used for various electrochemical reactions including oxygen reduction reaction (ORR) and their catalytic activities are significantly dependent on carbon precursors. Ionic liquids (ILs) are promising precursors of heteroatom-doped carbon electrocatalysts for ORR. Herein, we demonstrated that an IL tailored with π-π conjugated interaction introduced by a π-electron enriched aromatic ring can offer a carbon material with improved ORR activity.
Jian Gao; Xiujuan Chu; Xiaoyao Tan; Hongqi Sun; Zhen Yin; Shaobin Wang. Tailored ionic liquid for metal-free carbons toward oxygen reduction reaction. Carbon Trends 2021, 3, 100038 .
AMA StyleJian Gao, Xiujuan Chu, Xiaoyao Tan, Hongqi Sun, Zhen Yin, Shaobin Wang. Tailored ionic liquid for metal-free carbons toward oxygen reduction reaction. Carbon Trends. 2021; 3 ():100038.
Chicago/Turabian StyleJian Gao; Xiujuan Chu; Xiaoyao Tan; Hongqi Sun; Zhen Yin; Shaobin Wang. 2021. "Tailored ionic liquid for metal-free carbons toward oxygen reduction reaction." Carbon Trends 3, no. : 100038.
Self-supporting electrodes have triggered great interests in improving electro-Fenton (EF) system for degradation of refractory organic pollutants. In this work, a novel self-supporting carbon fiber paper (CFP) electrode modified by transition metals, e.g. Fe and Mn, was fabricated and employed as a heterogeneous EF cathode. The prepared electrode exhibited excellent degradation for a number of typical organic pollutants along with superior stability. Remarkably, a high removal efficiency was achieved in the EF treatment of shale gas fracturing flowback wastewater. Results indicated that 65.2% TOC and 74.8% COD were eliminated after 4 h degradation. The residual COD value of the real wastewater was 80 mg L−1, meeting the emission requirement of the integrated wastewater discharge standard (COD < 100 mg L−1) with a low specific energy consumption of 6.9 kWh kg−1 COD−1. This work demonstrates a competing alternative for efficient decontamination of real wastewater using an electro-Fenton strategy with a low-cost electrode.
Pei Dong; Xi Chen; Meiting Guo; Zhiyuan Wu; Haolong Wang; Feifei Lin; Jinqiang Zhang; Shuaijun Wang; Chaocheng Zhao; Hongqi Sun. Heterogeneous electro-Fenton catalysis with self-supporting [email protected]/C cathode for shale gas fracturing flowback wastewater. Journal of Hazardous Materials 2021, 412, 125208 .
AMA StylePei Dong, Xi Chen, Meiting Guo, Zhiyuan Wu, Haolong Wang, Feifei Lin, Jinqiang Zhang, Shuaijun Wang, Chaocheng Zhao, Hongqi Sun. Heterogeneous electro-Fenton catalysis with self-supporting [email protected]/C cathode for shale gas fracturing flowback wastewater. Journal of Hazardous Materials. 2021; 412 ():125208.
Chicago/Turabian StylePei Dong; Xi Chen; Meiting Guo; Zhiyuan Wu; Haolong Wang; Feifei Lin; Jinqiang Zhang; Shuaijun Wang; Chaocheng Zhao; Hongqi Sun. 2021. "Heterogeneous electro-Fenton catalysis with self-supporting [email protected]/C cathode for shale gas fracturing flowback wastewater." Journal of Hazardous Materials 412, no. : 125208.
Manganese oxides have been applied in advanced oxidation processes (AOPs), however, underlying oxidation regimes are still debatable. In this work, we synthesized various crystalline manganese oxides and single or dual metal-doped amorphous MnO2 (M-AMO, M = Fe, Co, Ni, and Cu) for organic oxidation with peroxymonosulfate (PMS). M-AMO at 1 mol% exhibited much higher activities than crystalline manganese oxides and Cu-AMO displayed the rate constant at 3.5 times as high as that of AMO. Different from conventional radical oxidation, nonradical degradation occurred via two pathways. Cu-doping resulted in relatively higher-crystallized structure, more oxygen vacancies, and a higher ratio of Mn4+/Mn3+ for a faster redox cycle between MnⅣ(s) and MnⅢ(s) to boost PMS activation and direct/indirect (Cu-AMO–PMS complex-based) phenol oxidation. This study contributes to a new insight to the structure-catalysis relationship in manganese-catalyzed PMS oxidation. The outcomes will direct the rational synthesis of reaction-oriented catalysts for nonradical AOPs and novel remediation technologies.
Yangyang Yang; Panpan Zhang; Kunsheng Hu; Xiaoguang Duan; Yongxiang Ren; Hongqi Sun; Shaobin Wang. Sustainable redox processes induced by peroxymonosulfate and metal doping on amorphous manganese dioxide for nonradical degradation of water contaminants. Applied Catalysis B: Environmental 2021, 286, 119903 .
AMA StyleYangyang Yang, Panpan Zhang, Kunsheng Hu, Xiaoguang Duan, Yongxiang Ren, Hongqi Sun, Shaobin Wang. Sustainable redox processes induced by peroxymonosulfate and metal doping on amorphous manganese dioxide for nonradical degradation of water contaminants. Applied Catalysis B: Environmental. 2021; 286 ():119903.
Chicago/Turabian StyleYangyang Yang; Panpan Zhang; Kunsheng Hu; Xiaoguang Duan; Yongxiang Ren; Hongqi Sun; Shaobin Wang. 2021. "Sustainable redox processes induced by peroxymonosulfate and metal doping on amorphous manganese dioxide for nonradical degradation of water contaminants." Applied Catalysis B: Environmental 286, no. : 119903.
The excessive uses of pharmaceuticals and personal care products (PPCPs) have led to the presence of trace amount of PPCPs in water bodies. Photocatalysis can be an efficient technology for the challenging PPCPs remediation in the environment. A nontoxic and stable compound, α-Fe2O3, possesses a lower band gap and magnetism and can be a potential catalyst for photocatalytic and photochemical degradation of PPCPs. However, the application of α-Fe2O3 in photocatalysis is limited due to the faster recombination of electron–hole pairs. In recent years, numerous studies on α-Fe2O3 modification to improve its photocatalytic efficiency have been published. This article provides a brief summary and progress on α-Fe2O3-based nanomaterials for the degradation of various PPCPs by photocatalysis and photochemical oxidation.
Abdul Hannan Asif; Shaobin Wang; Hongqi Sun. Hematite-based nanomaterials for photocatalytic degradation of pharmaceuticals and personal care products (PPCPs): A short review. Current Opinion in Green and Sustainable Chemistry 2021, 28, 100447 .
AMA StyleAbdul Hannan Asif, Shaobin Wang, Hongqi Sun. Hematite-based nanomaterials for photocatalytic degradation of pharmaceuticals and personal care products (PPCPs): A short review. Current Opinion in Green and Sustainable Chemistry. 2021; 28 ():100447.
Chicago/Turabian StyleAbdul Hannan Asif; Shaobin Wang; Hongqi Sun. 2021. "Hematite-based nanomaterials for photocatalytic degradation of pharmaceuticals and personal care products (PPCPs): A short review." Current Opinion in Green and Sustainable Chemistry 28, no. : 100447.
A Co single-atom catalyst on g-C3N4 support was prepared for the selective oxidation of ethylbenzene (EB) to acetophenone (AcPO) by peroxymonosulfate (PMS). The Co atoms bonded with N were robust active sites for EB oxidation via the radical pathway.
Jiaquan Li; Shiyong Zhao; Shi-Ze Yang; Shaobin Wang; Hongqi Sun; San Ping Jiang; Bernt Johannessen; Shaomin Liu. Atomically dispersed cobalt on graphitic carbon nitride as a robust catalyst for selective oxidation of ethylbenzene by peroxymonosulfate. Journal of Materials Chemistry A 2020, 9, 3029 -3035.
AMA StyleJiaquan Li, Shiyong Zhao, Shi-Ze Yang, Shaobin Wang, Hongqi Sun, San Ping Jiang, Bernt Johannessen, Shaomin Liu. Atomically dispersed cobalt on graphitic carbon nitride as a robust catalyst for selective oxidation of ethylbenzene by peroxymonosulfate. Journal of Materials Chemistry A. 2020; 9 (5):3029-3035.
Chicago/Turabian StyleJiaquan Li; Shiyong Zhao; Shi-Ze Yang; Shaobin Wang; Hongqi Sun; San Ping Jiang; Bernt Johannessen; Shaomin Liu. 2020. "Atomically dispersed cobalt on graphitic carbon nitride as a robust catalyst for selective oxidation of ethylbenzene by peroxymonosulfate." Journal of Materials Chemistry A 9, no. 5: 3029-3035.
Integrating carbon nitride with graphene into a lateral heterojunction would avoid energy loss within the interlaminar space region on conventional composites. To date, its synthesis process is limited to the bottom-up method which lacks the targeting and homogeneity. Herein, we proposed a hydrogen-initiated chemical epitaxial growth strategy at a relatively low temperature for the fabrication of graphene/carbon nitride in-plane heterostructure. Theoretical and experimental analysis proved that methane via in situ generation from the hydrogenated decomposition of carbon nitride triggered the graphene growth along the active sites at the edges of confined spaces. With the enhanced electrical field from the deposited graphene (0.5%), the performances on selective photo-oxidation and photocatalytic water splitting were promoted by 5.5 and 3.7 times, respectively. Meanwhile, a 7720 μmol/h/g(graphene) hydrogen evolution rate was acquired without any cocatalysts. This study provides an top-down strategy to synthesize in-plane catalyst for the utilization of solar energy.
Jinqiang Zhang; Yunguo Li; Xiaoli Zhao; Huayang Zhang; Liang Wang; Haijun Chen; Shuaijun Wang; Xinyuan Xu; Lei Shi; Lai-Chang Zhang; Jean-Pierre Veder; Shiyong Zhao; Gareth Nealon; Mingbo Wu; Shaobin Wang; Hongqi Sun. A Hydrogen-Initiated Chemical Epitaxial Growth Strategy for In-Plane Heterostructured Photocatalyst. ACS Nano 2020, 14, 17505 -17514.
AMA StyleJinqiang Zhang, Yunguo Li, Xiaoli Zhao, Huayang Zhang, Liang Wang, Haijun Chen, Shuaijun Wang, Xinyuan Xu, Lei Shi, Lai-Chang Zhang, Jean-Pierre Veder, Shiyong Zhao, Gareth Nealon, Mingbo Wu, Shaobin Wang, Hongqi Sun. A Hydrogen-Initiated Chemical Epitaxial Growth Strategy for In-Plane Heterostructured Photocatalyst. ACS Nano. 2020; 14 (12):17505-17514.
Chicago/Turabian StyleJinqiang Zhang; Yunguo Li; Xiaoli Zhao; Huayang Zhang; Liang Wang; Haijun Chen; Shuaijun Wang; Xinyuan Xu; Lei Shi; Lai-Chang Zhang; Jean-Pierre Veder; Shiyong Zhao; Gareth Nealon; Mingbo Wu; Shaobin Wang; Hongqi Sun. 2020. "A Hydrogen-Initiated Chemical Epitaxial Growth Strategy for In-Plane Heterostructured Photocatalyst." ACS Nano 14, no. 12: 17505-17514.
Semiconductor-based photocatalytic hydrogen evolution is considered to be a promising and cost-effective approach to address the environmental issues and energy crisis. It still remains a great challenge to design highly-efficient semiconductor photocatalysts via a facile method. Herein, hierarchically porous hydrangea-like In2S3/In2O3 heterostructures are successfully synthesized via a simple in situ oxidization process. The formed In2S3/In2O3 heterostructures exhibit superior photocatalytic activity to the counterpart In2S3 and In2O3. The boosted photocatalytic performance is ascribed to the formed heterostructures, which greatly facilitate the interfacial charge transfer. Moreover, the formation of hierarchically porous heterostructures increases the number of active sites and improves the permeability, and thus significantly promotes the photocatalytic H2 evolution activity. This work may provide a new insight for designing In2S3-based heterostructures for efficient solar light conversion.
Manli Liu; Pan Li; Shuaijun Wang; Yingmin Liu; Jinqiang Zhang; Lin Chen; Junmei Wang; Yushan Liu; Qi Shen; Peng Qu; Hongqi Sun. Hierarchically porous hydrangea-like In2S3/In2O3 heterostructures for enhanced photocatalytic hydrogen evolution. Journal of Colloid and Interface Science 2020, 587, 876 -882.
AMA StyleManli Liu, Pan Li, Shuaijun Wang, Yingmin Liu, Jinqiang Zhang, Lin Chen, Junmei Wang, Yushan Liu, Qi Shen, Peng Qu, Hongqi Sun. Hierarchically porous hydrangea-like In2S3/In2O3 heterostructures for enhanced photocatalytic hydrogen evolution. Journal of Colloid and Interface Science. 2020; 587 ():876-882.
Chicago/Turabian StyleManli Liu; Pan Li; Shuaijun Wang; Yingmin Liu; Jinqiang Zhang; Lin Chen; Junmei Wang; Yushan Liu; Qi Shen; Peng Qu; Hongqi Sun. 2020. "Hierarchically porous hydrangea-like In2S3/In2O3 heterostructures for enhanced photocatalytic hydrogen evolution." Journal of Colloid and Interface Science 587, no. : 876-882.
Water pollution usually involves multiple pollutants, and their degradation mechanisms are complicated. In this study, we investigated the degradation of single and binary pollutants (phenol and p-hydroxybenzoic acid (HBA)) in water, using biomass-derived N-doped porous carbon (Y-PC) for peroxymonosulfate (PMS) activation and we found better kinetics and efficiencies of degradation in binary pollutants than single pollutant systems. Electron paramagnetic resonance (EPR), quenching experiments, and electrochemical tests indicated that •OH, SO4•−, O2•−, and 1O2 accounted for the catalytic oxidation of phenol/HBA, while the electron-transfer pathway had an additional contribution to phenol degradation. We unveiled that the HBA degradation rate was similar in the binary and single systems due to the non-selective attack of the micropollutants by •OH, SO4•−, O2•− and 1O2. However, phenol degradation rate was significantly accelerated in the binary phenol/HBA system as compared to that in the single phenol solution, due to the exclusive and selective role of electron transfer pathway. In the binary micropollutant system, a fortified electron-transfer pathway over phenol directly expedited its decomposition and contributed indirectly to this process. This study provides new insights into porous carbon-based advanced oxidation processes for the simultaneous removal of multicomponent contaminants in practical applications.
Wenjie Tian; Jingkai Lin; Huayang Zhang; Xiaoguang Duan; Hongqi Sun; Hao Wang; Shaobin Wang. Enhanced removals of micropollutants in binary organic systems by biomass derived porous carbon/peroxymonosulfate. Journal of Hazardous Materials 2020, 408, 124459 .
AMA StyleWenjie Tian, Jingkai Lin, Huayang Zhang, Xiaoguang Duan, Hongqi Sun, Hao Wang, Shaobin Wang. Enhanced removals of micropollutants in binary organic systems by biomass derived porous carbon/peroxymonosulfate. Journal of Hazardous Materials. 2020; 408 ():124459.
Chicago/Turabian StyleWenjie Tian; Jingkai Lin; Huayang Zhang; Xiaoguang Duan; Hongqi Sun; Hao Wang; Shaobin Wang. 2020. "Enhanced removals of micropollutants in binary organic systems by biomass derived porous carbon/peroxymonosulfate." Journal of Hazardous Materials 408, no. : 124459.
Jingkai Lin; Wenjie Tian; Huayang Zhang; Xiaoguang Duan; Hongqi Sun; Shaobin Wang. Graphitic Carbon Nitride-Based Z-Scheme Structure for Photocatalytic CO2 Reduction. Energy & Fuels 2020, 35, 7 -24.
AMA StyleJingkai Lin, Wenjie Tian, Huayang Zhang, Xiaoguang Duan, Hongqi Sun, Shaobin Wang. Graphitic Carbon Nitride-Based Z-Scheme Structure for Photocatalytic CO2 Reduction. Energy & Fuels. 2020; 35 (1):7-24.
Chicago/Turabian StyleJingkai Lin; Wenjie Tian; Huayang Zhang; Xiaoguang Duan; Hongqi Sun; Shaobin Wang. 2020. "Graphitic Carbon Nitride-Based Z-Scheme Structure for Photocatalytic CO2 Reduction." Energy & Fuels 35, no. 1: 7-24.
Yuxian Wang; Xiaoguang Duan; Yongbing Xie; Hongqi Sun; Shaobin Wang. Nanocarbon-Based Catalytic Ozonation for Aqueous Oxidation: Engineering Defects for Active Sites and Tunable Reaction Pathways. ACS Catalysis 2020, 10, 13383 -13414.
AMA StyleYuxian Wang, Xiaoguang Duan, Yongbing Xie, Hongqi Sun, Shaobin Wang. Nanocarbon-Based Catalytic Ozonation for Aqueous Oxidation: Engineering Defects for Active Sites and Tunable Reaction Pathways. ACS Catalysis. 2020; 10 (22):13383-13414.
Chicago/Turabian StyleYuxian Wang; Xiaoguang Duan; Yongbing Xie; Hongqi Sun; Shaobin Wang. 2020. "Nanocarbon-Based Catalytic Ozonation for Aqueous Oxidation: Engineering Defects for Active Sites and Tunable Reaction Pathways." ACS Catalysis 10, no. 22: 13383-13414.
Photocatalytic hydrogen evolution reaction (PER) suffers from deficient solar light efficiency, high cost of noble-metal cocatalysts and low responses to visible and infrared light. In this article, we report single-atom silver incorporated g-C3N4 (SAAg-g-CN) as a low-cost and stable catalyst with higher activities in PER and solar-heat-assisted PER processes than Ag nanoparticle decorated g-C3N4 (AgNP-g-CN) and PtNP-g-C3N4. The excellent activity of SAAg-g-CN is benefited from the proper Gibbs free energy of the adsorbed hydrogen atom (ΔGH*) and robust structure of N-Ag bonding of the SAAg-g-CN. The PER rate of SAAg-g-CN at 55 °C was doubled as compared to that at 25 °C, meanwhile, AgNP-g-CN and PtNP-g-CN showed descending PER performances, due to the agglomeration of metal NPs. This work demonstrates the ultrahigh photoactivity and photothermal stability of SAAg-g-CN, and its potential in facilitating the full exploitation of solar energy.
Xiaojie Li; Shiyong Zhao; Xiaoguang Duan; Huayang Zhang; Shi-Ze Yang; Panpan Zhang; San Ping Jiang; Shaomin Liu; Hongqi Sun; Shaobin Wang. Coupling hydrothermal and photothermal single-atom catalysis toward excellent water splitting to hydrogen. Applied Catalysis B: Environmental 2020, 283, 119660 .
AMA StyleXiaojie Li, Shiyong Zhao, Xiaoguang Duan, Huayang Zhang, Shi-Ze Yang, Panpan Zhang, San Ping Jiang, Shaomin Liu, Hongqi Sun, Shaobin Wang. Coupling hydrothermal and photothermal single-atom catalysis toward excellent water splitting to hydrogen. Applied Catalysis B: Environmental. 2020; 283 ():119660.
Chicago/Turabian StyleXiaojie Li; Shiyong Zhao; Xiaoguang Duan; Huayang Zhang; Shi-Ze Yang; Panpan Zhang; San Ping Jiang; Shaomin Liu; Hongqi Sun; Shaobin Wang. 2020. "Coupling hydrothermal and photothermal single-atom catalysis toward excellent water splitting to hydrogen." Applied Catalysis B: Environmental 283, no. : 119660.
The simple incineration of wood-based panels (WBPs) waste generates a significant amount of NOx, which has led to urgency in developing a new method for treating the N-containing biomass residues. This work aims to examine the N evolution and physiochemical structural changes during the co-pyrolysis of fiberboard and glucose, where the percentage of glucose in the feedstock was varied from 0% to 70%. It was found that N retention in chars was monotonically increased with increasing use of glucose, achieving ~60% N fixation when the glucose accounted for 70% in the mixture. Pyrrole-N (N-5) and Pyridine-N (N-6) were preferentially formed at high ratios of glucose to fiberboard. While the relevant importance of volatile–char interactions to N retention and transformation could be observed, the volatile–volatile reactions from the two feedstocks played a vital role in the increase in abundance of glucose. With the introduction of glucose, the porous structure and porosity in chars from the co-pyrolysis were dramatically altered, whereas the devolatilization of glucose tended to generate larger pores than the fiberboard. The insignificant changes in carbon structure of all chars revealed by Raman spectroscopy would practically allow us to apply the monosaccharides to the WBPs for regulating N evolution without concerns about its side effects for char carbon structures.
Deliang Xu; Liu Yang; Ming Zhao; Yu Song; Karnowo; Hong Zhang; Xun Hu; Hongqi Sun; Shu Zhang. N Evolution and Physiochemical Structure Changes in Chars during Co-Pyrolysis: Effects of Abundance of Glucose in Fiberboard. Energies 2020, 13, 5105 .
AMA StyleDeliang Xu, Liu Yang, Ming Zhao, Yu Song, Karnowo, Hong Zhang, Xun Hu, Hongqi Sun, Shu Zhang. N Evolution and Physiochemical Structure Changes in Chars during Co-Pyrolysis: Effects of Abundance of Glucose in Fiberboard. Energies. 2020; 13 (19):5105.
Chicago/Turabian StyleDeliang Xu; Liu Yang; Ming Zhao; Yu Song; Karnowo; Hong Zhang; Xun Hu; Hongqi Sun; Shu Zhang. 2020. "N Evolution and Physiochemical Structure Changes in Chars during Co-Pyrolysis: Effects of Abundance of Glucose in Fiberboard." Energies 13, no. 19: 5105.