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Nanonail shaped ZnS-CuS-Bi three component nanoparticles are synthesized via a simple one-pot colloidal synthesis route by thermal decomposition of metal-thiolate precursors. A thiol serves as the sulfur source and a phase directing capping agent promotes selective anisotropic growth of the nanocrystals in a noncoordinating solvent. After the nucleation and growth of a CuS rod, reactive Cu ions serve as catalytic seeds for the nucleation and growth of ZnS and Bi at the CuS nanorod tips. Thereby the obtained ZnS-CuS-Bi nanocrystals form a chain of two semiconductors of decreasing band gap and a metallic Bi nanoparticle. The three components absorb light in different spectral regions enabling efficient light harvesting. Furthermore, the band edge alignment of ZnS and CuS promote photogenerated electron funneling towards the Bi catalyst particle, which promotes charge carrier separation, effectively channeling the catalytic activity. The photocatalytic performance is accessed at the example of the photodegradation of the organic dye Rhodamine B, and shows excellent performance rendering these nanonails as inexpensive, non-toxic and efficient photocatalyst to remedy environmental pollution.
Njemuwa Nwaji; Eser Metin Akinoglu. Synthesis of ZnS-CuS-Bi Nanonail Heterostructures and Funnel Mechanism of their Photocatalytic Activity. Journal of Environmental Chemical Engineering 2021, 106066 .
AMA StyleNjemuwa Nwaji, Eser Metin Akinoglu. Synthesis of ZnS-CuS-Bi Nanonail Heterostructures and Funnel Mechanism of their Photocatalytic Activity. Journal of Environmental Chemical Engineering. 2021; ():106066.
Chicago/Turabian StyleNjemuwa Nwaji; Eser Metin Akinoglu. 2021. "Synthesis of ZnS-CuS-Bi Nanonail Heterostructures and Funnel Mechanism of their Photocatalytic Activity." Journal of Environmental Chemical Engineering , no. : 106066.
Melanin nanoparticles are known to be biologically benign to human cells for a wide range of concentrations in a high glucose culture nutrition. Here, we show cytotoxic behavior at high nanoparticle and low glucose concentrations, as well as at low nanoparticle concentration under exposure to (nonionizing) visible radiation. To study these effects in detail, we developed highly monodispersed melanin nanoparticles (both uncoated and glucose-coated). In order to study the effect of significant cellular uptake of these nanoparticles, we employed three cancer cell lines: VM-M3, A375 (derived from melanoma), and HeLa, all known to exhibit strong macrophagic character, i.e., strong nanoparticle uptake through phagocytic ingestion. Our main observations are: (i) metastatic VM-M3 cancer cells massively ingest melanin nanoparticles (mNPs); (ii) the observed ingestion is enhanced by coating mNPs with glucose; (iii) after a certain level of mNP ingestion, the metastatic cancer cells studied here are observed to die—glucose coating appears to slow that process; (iv) cells that accumulate mNPs are much more susceptible to killing by laser illumination than cells that do not accumulate mNPs; and (v) non-metastatic VM-NM1 cancer cells also studied in this work do not ingest the mNPs, and remain unaffected after receiving identical optical energy levels and doses. Results of this study could lead to the development of a therapy for control of metastatic stages of cancer.
Victoria Gabriele; Robabeh Mazhabi; Natalie Alexander; Purna Mukherjee; Thomas Seyfried; Njemuwa Nwaji; Eser Akinoglu; Andrzej Mackiewicz; Guofu Zhou; Michael Giersig; Michael Naughton; Krzysztof Kempa. Light- and Melanin Nanoparticle-Induced Cytotoxicity in Metastatic Cancer Cells. Pharmaceutics 2021, 13, 965 .
AMA StyleVictoria Gabriele, Robabeh Mazhabi, Natalie Alexander, Purna Mukherjee, Thomas Seyfried, Njemuwa Nwaji, Eser Akinoglu, Andrzej Mackiewicz, Guofu Zhou, Michael Giersig, Michael Naughton, Krzysztof Kempa. Light- and Melanin Nanoparticle-Induced Cytotoxicity in Metastatic Cancer Cells. Pharmaceutics. 2021; 13 (7):965.
Chicago/Turabian StyleVictoria Gabriele; Robabeh Mazhabi; Natalie Alexander; Purna Mukherjee; Thomas Seyfried; Njemuwa Nwaji; Eser Akinoglu; Andrzej Mackiewicz; Guofu Zhou; Michael Giersig; Michael Naughton; Krzysztof Kempa. 2021. "Light- and Melanin Nanoparticle-Induced Cytotoxicity in Metastatic Cancer Cells." Pharmaceutics 13, no. 7: 965.
Considering the attractive optoelectronic properties of metal halide perovskites (MHPs), their introduction to the field of photocatalysis was only a matter of time. Thus far, MHPs have been explored for the photocatalytic generation of hydrogen, carbon dioxide reduction, organic synthesis, and pollutant degradation applications. Of growing research interest and possible applied significance are the currently emerging developments of MHP-based Z-scheme heterostructures, which can potentially enable efficient photocatalysis of highly energy-demanding redox processes. In this Perspective, we discuss the advantages and limitations of MHPs compared to traditional semiconductor materials for applications as photocatalysts and describe emerging examples in the construction of MHP-based Z-scheme systems. We discuss the principles and material properties that are required for the development of such Z-scheme heterostructure photocatalysts and consider the ongoing challenges and opportunities in this emerging field.
Eser M. Akinoglu; Dijon A. Hoogeveen; Chang Cao; Alexandr N. Simonov; Jacek J. Jasieniak. Prospects of Z-Scheme Photocatalytic Systems Based on Metal Halide Perovskites. ACS Nano 2021, 15, 7860 -7878.
AMA StyleEser M. Akinoglu, Dijon A. Hoogeveen, Chang Cao, Alexandr N. Simonov, Jacek J. Jasieniak. Prospects of Z-Scheme Photocatalytic Systems Based on Metal Halide Perovskites. ACS Nano. 2021; 15 (5):7860-7878.
Chicago/Turabian StyleEser M. Akinoglu; Dijon A. Hoogeveen; Chang Cao; Alexandr N. Simonov; Jacek J. Jasieniak. 2021. "Prospects of Z-Scheme Photocatalytic Systems Based on Metal Halide Perovskites." ACS Nano 15, no. 5: 7860-7878.
The construction of definitive correlation between structure and catalytic properties for electrochemical artificial N2 fixation is still challenging yet significative. Herein, we have explored the coordinative unsaturation (Fe-N2) in isolated Fe atoms with nitrogen vacancies (VN, which are located at the opposite coordination sites of the Fe atom) on interconnected carbon for electrocatalytic ammonia synthesis. Benefiting from dual active centers (Fe-N2 and VN) and the spin density on both of them, the novel catalyst exhibits a synergistic improvement of catalytic activity, selectivity, and stability. This work guides the design of the catalyst theoretically and synergistically and combines the advantages of Fe-N2 with VN structure creation, defect and spin-state engineering introduction toward the concurrent fulfillment of effective N2 adsorption and activation. We believe our strategy will incite more investigation into designing high-performance catalysts with well-defined coordinative unsaturation single-atom active sites for ambient ammonia synthesis and other energy conversion system.
Weibin Qiu; Na Yang; Dan Luo; Jiayi Wang; Lirong Zheng; Yuchen Zhu; Eser Metin Akinoglu; Qianming Huang; Lingling Shui; Rongming Wang; Guofu Zhou; Xin Wang; Zhongwei Chen. Precise synthesis of Fe–N2 with N vacancies coordination for boosting electrochemical artificial N2 fixation. Applied Catalysis B: Environmental 2021, 293, 120216 .
AMA StyleWeibin Qiu, Na Yang, Dan Luo, Jiayi Wang, Lirong Zheng, Yuchen Zhu, Eser Metin Akinoglu, Qianming Huang, Lingling Shui, Rongming Wang, Guofu Zhou, Xin Wang, Zhongwei Chen. Precise synthesis of Fe–N2 with N vacancies coordination for boosting electrochemical artificial N2 fixation. Applied Catalysis B: Environmental. 2021; 293 ():120216.
Chicago/Turabian StyleWeibin Qiu; Na Yang; Dan Luo; Jiayi Wang; Lirong Zheng; Yuchen Zhu; Eser Metin Akinoglu; Qianming Huang; Lingling Shui; Rongming Wang; Guofu Zhou; Xin Wang; Zhongwei Chen. 2021. "Precise synthesis of Fe–N2 with N vacancies coordination for boosting electrochemical artificial N2 fixation." Applied Catalysis B: Environmental 293, no. : 120216.
Colloidal synthesis of photocatalysts with potential to overcome the drawback of low photocatalytic efficiency brought by charge recombination and narrow photo-response has been a challenge. Herein, a general and facile colloidal approach to synthesize orthorhombic phase Bi2S3 particles with rod and flower-like morphology is reported. We elucidate the formation and growth process mechanisms of these synthesized nanocrystals in detail and cooperate these Bi2S3 particles with metallic gold nanoparticles (AuNPs) to construct heterostructured photocatalysts. The unique properties of AuNPs featuring tunable surface plasmon resonance and large field enhancement are used to sensitize the photocatalytic activity of the Bi2S3 semiconductor particles. The morphology, structure, elemental composition, and light absorption ability of the prepared catalysts are characterized by (high-resolution) transmission electron microscopy, scanning electron microscopy, X-ray diffraction spectroscopy, X-ray photoelectron spectroscopy, and UV–vis absorption spectroscopy. The catalysts exhibit high and stable photocatalytic activity for the degradation of organic pollutants demonstrated using rhodamine B and methyl orange dyes under solar light irradiation. We show that the incorporation of the AuNPs with the Bi2S3 particles increases the photocatalytic activity 1.2 to 3-fold. Radical trapping analysis indicates that the production of hydroxyl and superoxide radicals are the dominant active species responsible for the photodegradation activity. The photocatalysts exhibit good stability and recyclability.
Njemuwa Nwaji; Eser Akinoglu; Michael Giersig. Gold Nanoparticle-Decorated Bi2S3 Nanorods and Nanoflowers for Photocatalytic Wastewater Treatment. Catalysts 2021, 11, 355 .
AMA StyleNjemuwa Nwaji, Eser Akinoglu, Michael Giersig. Gold Nanoparticle-Decorated Bi2S3 Nanorods and Nanoflowers for Photocatalytic Wastewater Treatment. Catalysts. 2021; 11 (3):355.
Chicago/Turabian StyleNjemuwa Nwaji; Eser Akinoglu; Michael Giersig. 2021. "Gold Nanoparticle-Decorated Bi2S3 Nanorods and Nanoflowers for Photocatalytic Wastewater Treatment." Catalysts 11, no. 3: 355.
The development of high-efficiency oxygen electrocatalysts with earth-abundant transition metals rather than scarce noble metals has aroused growing interests due to their potential for energy storage and conversion applications. Herein, we developed a facile strategy to synthesize hollow tubular bimetallic Ni–Co oxide rooted with dense nanosheets for enhanced bifunctionality and facilitated redox reaction kinetics. Owing to the rational design of morphology and well-dispersed Ni and Co ions, the bimetallic samples exhibit admirable bifunctional electrocatalytic activities. This bimetallic Ni–Co oxide shows superior oxygen electrocatalytic performance in comparison with the monometallic Ni and Co oxides, according to the electrocatalytic synergistic effect from the bimetallic system. The optimized sample with the specific mass ratio of Ni and Co displays the oxygen reduction reaction (ORR) property comparable to commercial Pt/C and oxygen evolution reaction (OER) performance superior to commercial RuO2. The electrochemical tests and structural characterizations offer in-depth dissection on the electrocatalytic behaviors, especially the superb stability in both ORR and OER tests, as well as the outstanding resistance to methanol poisoning, representing a promising candidate in the renewable energy field.
Yafei Xue; Ge Ma; Xin Wang; Mingliang Jin; Eser Metin Akinoglu; Dan Luo; Lingling Shui. Bimetallic Hollow Tubular NiCoOx as a Bifunctional Electrocatalyst for Enhanced Oxygen Reduction and Evolution Reaction. ACS Applied Materials & Interfaces 2021, 13, 7334 -7342.
AMA StyleYafei Xue, Ge Ma, Xin Wang, Mingliang Jin, Eser Metin Akinoglu, Dan Luo, Lingling Shui. Bimetallic Hollow Tubular NiCoOx as a Bifunctional Electrocatalyst for Enhanced Oxygen Reduction and Evolution Reaction. ACS Applied Materials & Interfaces. 2021; 13 (6):7334-7342.
Chicago/Turabian StyleYafei Xue; Ge Ma; Xin Wang; Mingliang Jin; Eser Metin Akinoglu; Dan Luo; Lingling Shui. 2021. "Bimetallic Hollow Tubular NiCoOx as a Bifunctional Electrocatalyst for Enhanced Oxygen Reduction and Evolution Reaction." ACS Applied Materials & Interfaces 13, no. 6: 7334-7342.
Unusual structural colors are demonstrated in thin‐film coatings due to a combination of optical interference and light scattering effects. These vivid colors are concealed under ambient illumination but can be observed when light is reflected from the film surface. The origin of the effect is explored computationally and it is shown that, in thin‐films of lossless dielectrics coated on near‐perfect conductors, incident electromagnetic waves form standing waves. Electric field intensities at the thin film interfaces are maximized for wavelengths that fulfil destructive interference conditions, while nanoscale roughness can enhance scattering at these boundaries. The interplay of these two factors yields vivid, thickness‐dependent colors. This approach increases the repertoire of optical effects and perceived colors in thin coatings. When combined with traditional thin‐film interference colours, dichromatic images with distinctly changing colors can be generated, which can function as a covert, optical security feature.
Eser Metin Akinoglu; Jingchao Song; Calum Kinnear; Yafei Xue; Heyou Zhang; Ann Roberts; Jürgen Köhler; Paul Mulvaney. Concealed Structural Colors Uncovered by Light Scattering. Advanced Optical Materials 2020, 8, 1 .
AMA StyleEser Metin Akinoglu, Jingchao Song, Calum Kinnear, Yafei Xue, Heyou Zhang, Ann Roberts, Jürgen Köhler, Paul Mulvaney. Concealed Structural Colors Uncovered by Light Scattering. Advanced Optical Materials. 2020; 8 (22):1.
Chicago/Turabian StyleEser Metin Akinoglu; Jingchao Song; Calum Kinnear; Yafei Xue; Heyou Zhang; Ann Roberts; Jürgen Köhler; Paul Mulvaney. 2020. "Concealed Structural Colors Uncovered by Light Scattering." Advanced Optical Materials 8, no. 22: 1.
Ultrasensitive sensors of various physical properties can be based on percolation systems, e.g., insulating media filled with nearly touching conducting particles. Such a system at its percolation threshold featuring the critical particle concentration, changes drastically its response (electrical conduction, light transmission, etc.) when subjected to an external stimulus. Due to the critical nature of this threshold, a given state at the threshold is typically very unstable. However, stability can be restored without significantly sacrificing the structure sensitivity by forming weak connections between the conducting particles. In this work, we employed nano-bridged nanosphere lithography to produce such a weakly connected percolation system. It consists of two coupled quasi-Babinet complementary arrays, one with weakly connected, and the other with disconnected metallic islands. We demonstrate via experiment and simulation that the physics of this plasmonic system is non-trivial, and leads to the extraordinary optical transmission at narrowly defined peaks sensitive to system parameters, with surface plasmons mediating this process. Thus, our system is a potential candidate for percolation effect based sensor applications. Promising detection schemes could be based on these effects.
Eser Metin Akinoglu; Lingpeng Luo; Tyler Dodge; Lijing Guo; Goekalp Engin Akinoglu; Xin Wang; Lingling Shui; Guofu Zhou; Michael J. Naughton; Krzysztof Kempa; Michael Giersig. Extraordinary optical transmission in nano-bridged plasmonic arrays mimicking a stable weakly-connected percolation threshold. Optics Express 2020, 28, 31425 -31435.
AMA StyleEser Metin Akinoglu, Lingpeng Luo, Tyler Dodge, Lijing Guo, Goekalp Engin Akinoglu, Xin Wang, Lingling Shui, Guofu Zhou, Michael J. Naughton, Krzysztof Kempa, Michael Giersig. Extraordinary optical transmission in nano-bridged plasmonic arrays mimicking a stable weakly-connected percolation threshold. Optics Express. 2020; 28 (21):31425-31435.
Chicago/Turabian StyleEser Metin Akinoglu; Lingpeng Luo; Tyler Dodge; Lijing Guo; Goekalp Engin Akinoglu; Xin Wang; Lingling Shui; Guofu Zhou; Michael J. Naughton; Krzysztof Kempa; Michael Giersig. 2020. "Extraordinary optical transmission in nano-bridged plasmonic arrays mimicking a stable weakly-connected percolation threshold." Optics Express 28, no. 21: 31425-31435.
New semiconducting metal oxides of various compositions are of great interest for efficient solar water oxidation. In this report, Mo-doped SnO2 (Mo:SnO2) thin films deposited by reactive magnetron co-sputtering in the Ar and O2 gas environment are studied. The Sn to Mo ratio in the films can be controlled by changing the O2 partial pressure and the deposition power of the Sn and Mo targets. Increasing the Mo concentration in the film leads to the increase in the oxygen vacancy density, which limits the maximum achievable photocurrent density. The thin films exhibit a direct band gap of 2.7 eV, the maximum achievable photocurrent density of 0.6 mA cm−2 at 0 VRHE and the onset potential of 0.14 VRHE. The incident photon to current transfer (IPCE) efficiency of 22% is shown at a 450 nm wavelength. The initial performance of the Mo:SnO2 thin films is evaluated for solar water oxidation.
Farabi Bozheyev; Eser Metin Akinoglu; Lihua Wu; Shuting Lou; Michael Giersig. Effect of Mo-doping in SnO2 thin film photoanodes for water oxidation. International Journal of Hydrogen Energy 2020, 45, 33448 -33456.
AMA StyleFarabi Bozheyev, Eser Metin Akinoglu, Lihua Wu, Shuting Lou, Michael Giersig. Effect of Mo-doping in SnO2 thin film photoanodes for water oxidation. International Journal of Hydrogen Energy. 2020; 45 (58):33448-33456.
Chicago/Turabian StyleFarabi Bozheyev; Eser Metin Akinoglu; Lihua Wu; Shuting Lou; Michael Giersig. 2020. "Effect of Mo-doping in SnO2 thin film photoanodes for water oxidation." International Journal of Hydrogen Energy 45, no. 58: 33448-33456.
Ke Feng; Eser Metin Akinoglu; Farabi Bozheyev; Lijing Guo; Mingliang Jin; Xin Wang; Guofu Zhou; Michael J Naughton; Michael Giersig. Magnetron sputtered copper bismuth oxide photocathodes for solar water reduction. Journal of Physics D: Applied Physics 2020, 53, 495501 .
AMA StyleKe Feng, Eser Metin Akinoglu, Farabi Bozheyev, Lijing Guo, Mingliang Jin, Xin Wang, Guofu Zhou, Michael J Naughton, Michael Giersig. Magnetron sputtered copper bismuth oxide photocathodes for solar water reduction. Journal of Physics D: Applied Physics. 2020; 53 (49):495501.
Chicago/Turabian StyleKe Feng; Eser Metin Akinoglu; Farabi Bozheyev; Lijing Guo; Mingliang Jin; Xin Wang; Guofu Zhou; Michael J Naughton; Michael Giersig. 2020. "Magnetron sputtered copper bismuth oxide photocathodes for solar water reduction." Journal of Physics D: Applied Physics 53, no. 49: 495501.
We develop nano-bridged nanosphere lithography (NB-NSL), a modification to the widely used conventional nanosphere lithography (NSL). Nano-bridges between the polystyrene (PS) spheres of a pristine NSL template are controllably formed in a two-step process: (i) spin-coating of a dilute styrene solution on top of the template followed by (ii) oxygen plasma etching of the template. We show that the nanobridge dimensions can be precisely tuned by controlling the pre-processing conditions and the plasma etching time. The resulting lithography templates feature control over the shape and size of the apertures, which determine the morphology of the final nano-island arrays after material deposition and template removal. The unique advantage of NB-NSL is, that PS particle templates based on a single PS particle diameter can be utilized for the fabrication of a variation of nano-island shapes and sizes, whereas conventional NSL yields only bow-tie shaped nano-island with their size being predetermined by the PS particle diameter of the template.
Lingpeng Luo; Eser Metin Akinoglu; Lihua Wu; Tyler Dodge; Xin Wang; Guofu Zhou; Michael J Naughton; Krzysztof Kempa; Michael Giersig. Nano-bridged nanosphere lithography. Nanotechnology 2020, 31, 245302 .
AMA StyleLingpeng Luo, Eser Metin Akinoglu, Lihua Wu, Tyler Dodge, Xin Wang, Guofu Zhou, Michael J Naughton, Krzysztof Kempa, Michael Giersig. Nano-bridged nanosphere lithography. Nanotechnology. 2020; 31 (24):245302.
Chicago/Turabian StyleLingpeng Luo; Eser Metin Akinoglu; Lihua Wu; Tyler Dodge; Xin Wang; Guofu Zhou; Michael J Naughton; Krzysztof Kempa; Michael Giersig. 2020. "Nano-bridged nanosphere lithography." Nanotechnology 31, no. 24: 245302.
Semiconducting ternary metal oxide thin films exhibit a promising application for solar energy conversion. However, the efficiency of the conversion is still limited by a band gap of a semiconductor, which determines an obtainable internal photovoltage for solar water splitting. In this report the tunability of the tin tungstate band gap by O2 partial pressure control in the magnetron co-sputtering process is shown. A deficiency in the Sn concentration increases the optical band gap of tin tungstate thin films. The optimum band gap of 1.7 eV for tin tungstate films is achieved for a Sn to W ratio at unity, which establishes the highest photoelectrochemical activity. In particular, a maximum photocurrent density of 0.375 mA cm−2 at 1.23 VRHE and the lowest reported onset potential of −0.24 VRHE for SnWO4 thin films without any co-catalyst are achieved. Finally, we demonstrate that a Ni protection layer on the SnWO4 thin film enhances the photoelectrochemical stability, which is of paramount importance for application.
Farabi Bozheyev; Eser Metin Akinoglu; Lihua Wu; Han Lu; Renata Nemkayeva; Yafei Xue; Mingliang Jin; Michael Giersig. Band gap optimization of tin tungstate thin films for solar water oxidation. International Journal of Hydrogen Energy 2020, 45, 8676 -8685.
AMA StyleFarabi Bozheyev, Eser Metin Akinoglu, Lihua Wu, Han Lu, Renata Nemkayeva, Yafei Xue, Mingliang Jin, Michael Giersig. Band gap optimization of tin tungstate thin films for solar water oxidation. International Journal of Hydrogen Energy. 2020; 45 (15):8676-8685.
Chicago/Turabian StyleFarabi Bozheyev; Eser Metin Akinoglu; Lihua Wu; Han Lu; Renata Nemkayeva; Yafei Xue; Mingliang Jin; Michael Giersig. 2020. "Band gap optimization of tin tungstate thin films for solar water oxidation." International Journal of Hydrogen Energy 45, no. 15: 8676-8685.
Bi24O31Br10 microcrystals composed of nanobelts and nanosheets with exposed (30-4) and (117) facets were synthesized by a simple hydrothermal method. The desired morphology and facets were obtained by adjusting the pH of the reaction system. Bi24O31Br10 nanobelts (BOB-NBs) with dominant (30-4) exposed facets were used for the photocatalytic degradation of tetracycline hydrochloride under visible light irradiation, with a degradation efficiency of up to 91% after 60 min of irradiation. The BOB-NBs possessed a higher charge separation and transfer efficiency, and showed less charge carrier recombination compared to the Bi24O31Br10 nanosheets (BOB-NSs), ascribed to a cooperative effect between the internal electric fields and surface active sites. A higher photocurrent response (2.6 times higher) was observed for BOB-NBs (12.8 μA cm−2) compared to that of BOB-NSs (4.9 μA cm−2). These findings are directional for a comprehensive understanding of the influence of the crystal facets of Bi24O31Br10 microcrystals on their photocatalytic activity and could help to guide the future design of high-performance photocatalytic materials.
Qindan Zeng; Wei Xie; Zhihong Chen; Xin Wang; Eser Metin Akinoglu; Guofu Zhou; Lingling Shui. Influence of the Facets of Bi24O31Br10 Nanobelts and Nanosheets on Their Photocatalytic Properties. Catalysts 2020, 10, 257 .
AMA StyleQindan Zeng, Wei Xie, Zhihong Chen, Xin Wang, Eser Metin Akinoglu, Guofu Zhou, Lingling Shui. Influence of the Facets of Bi24O31Br10 Nanobelts and Nanosheets on Their Photocatalytic Properties. Catalysts. 2020; 10 (2):257.
Chicago/Turabian StyleQindan Zeng; Wei Xie; Zhihong Chen; Xin Wang; Eser Metin Akinoglu; Guofu Zhou; Lingling Shui. 2020. "Influence of the Facets of Bi24O31Br10 Nanobelts and Nanosheets on Their Photocatalytic Properties." Catalysts 10, no. 2: 257.
Cu2Se with high theoretical capacity and good electronic conductivity have attracted particular attention as anode materials for sodium ion batteries (SIBs). However, during electrochemical reactions, the large volume change of Cu2Se results in poor rate performance and cycling stability. To solve this issue, nanosized-Cu2Se is encapsulated in 1D nitrogen-doped carbon nanofibers (Cu2Se-NC) so that the unique structure of 1D carbon fiber network ensures a high contact area between the electrolyte and Cu2Se with a short Na+ diffusion path and provides a protective matrix to accommodate the volume variation. The kinetic analysis and DNa+ calculation indicates that the dominant contribution to the capacity is surface pseudocapacitance with fast Na+ migration, which guarantees the favorable rate performance of Cu2Se-NC for SIBs.
Le Hu; Chaoqun Shang; Eser Metin Akinoglu; Xin Wang; Guofu Zhou. Cu2Se Nanoparticles Encapsulated by Nitrogen-Doped Carbon Nanofibers for Efficient Sodium Storage. Nanomaterials 2020, 10, 302 .
AMA StyleLe Hu, Chaoqun Shang, Eser Metin Akinoglu, Xin Wang, Guofu Zhou. Cu2Se Nanoparticles Encapsulated by Nitrogen-Doped Carbon Nanofibers for Efficient Sodium Storage. Nanomaterials. 2020; 10 (2):302.
Chicago/Turabian StyleLe Hu; Chaoqun Shang; Eser Metin Akinoglu; Xin Wang; Guofu Zhou. 2020. "Cu2Se Nanoparticles Encapsulated by Nitrogen-Doped Carbon Nanofibers for Efficient Sodium Storage." Nanomaterials 10, no. 2: 302.