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Ikram Ahmad
Department of Chemistry, University of Sahiwal, Sahiwal 54000, Pakistan

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Journal article
Published: 30 April 2021 in Coatings
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This work intended to enhance the unique and outstanding properties of lanthanum by synthesizing its nanocomposite. A lanthanum-based nanocomposite was prepared by a simple and cost-effective “co-precipitation” method. Lanthanum nitrate (La (NO3)3) and zinc nitrate (Zn (NO3)2) were used as precursors. The lanthanum/zinc oxide nano composite formed was then calcined at 450 °C for 4 h in order to obtain a fine powder with size in the nano range of 1–100 nm. Characterization of the prepared catalyst was done by ultraviolet/visible spectroscopy, Fourier transform infrared spectroscopy, and photoluminescence. Crystallinity and morphology were found by X-ray diffraction and scanning electron microscopy. The synthesized nanocomposite material was also tested for heterogeneous catalytic applications of 4-nitrophenol (4-NP) reduction into 4-aminophenol (4-AP). It was found to be successful in complete reduction of 4-NP with enhanced catalytic performance.

ACS Style

Ikram Ahmad; Muhammad Jamal; Miara Iftikhar; Awais Ahmad; Shahid Hussain; Humaira Asghar; Muhammad Saeed; Ammar Yousaf; Rama Karri; Nada Al-Kadhi; Mohamed Ouladsmane; Ayman Ghfar; Safia Khan. Lanthanum-Zinc Binary Oxide Nanocomposite with Promising Heterogeneous Catalysis Performance for the Active Conversion of 4-Nitrophenol into 4-Aminophenol. Coatings 2021, 11, 537 .

AMA Style

Ikram Ahmad, Muhammad Jamal, Miara Iftikhar, Awais Ahmad, Shahid Hussain, Humaira Asghar, Muhammad Saeed, Ammar Yousaf, Rama Karri, Nada Al-Kadhi, Mohamed Ouladsmane, Ayman Ghfar, Safia Khan. Lanthanum-Zinc Binary Oxide Nanocomposite with Promising Heterogeneous Catalysis Performance for the Active Conversion of 4-Nitrophenol into 4-Aminophenol. Coatings. 2021; 11 (5):537.

Chicago/Turabian Style

Ikram Ahmad; Muhammad Jamal; Miara Iftikhar; Awais Ahmad; Shahid Hussain; Humaira Asghar; Muhammad Saeed; Ammar Yousaf; Rama Karri; Nada Al-Kadhi; Mohamed Ouladsmane; Ayman Ghfar; Safia Khan. 2021. "Lanthanum-Zinc Binary Oxide Nanocomposite with Promising Heterogeneous Catalysis Performance for the Active Conversion of 4-Nitrophenol into 4-Aminophenol." Coatings 11, no. 5: 537.

Journal article
Published: 08 March 2021 in Coatings
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Removal of hazardous organic dyes from polluted water bodies requires the introduction of strong adsorbents and photocatalysts to industrial wastewaters. Herein, photocatalytic CeO2 nanoparticles and CeO2/CuO nanocomposite were synthesized following a co-precipitation method for low cost elution of methylene blue (MB) from water. The crystallinity and surface structure of the as-prepared materials have been analyzed using characterization techniques including X-ray powder diffraction (XRPD), field emission scanning electron microscopy (FE-SEM), energy-dispersive spectroscopy (EDS), ultra-violet visible spectroscopy (UV–Vis), and Fourier-transform infrared spectroscopy (FTIR). The average particle size of both the nano scaled samples were approximately 20–30 nm. The photocatalytic properties of CeO2/CuO were investigated under visible light against methylene blue (MB). The results showed 91% photodegradation of MB organic pollutant in 3 h as monitored by UV–Vis spectroscopy. Absorbance peaks appeared at around 670 nm corresponding to degradation of MB. Such output displayed the effectiveness of Ce nanocomposites for environmental benefits. Hence, CeO2/CuO nanocomposite could be useful for treatment of industrial wastewaters by removing hazardous MB dye.

ACS Style

Alia Raees; Muhammad Jamal; Ikram Ahmed; Mika Silanpaa; Tahani Saad Algarni. Synthesis and Characterization of CeO2/CuO Nanocomposites for Photocatalytic Degradation of Methylene Blue in Visible Light. Coatings 2021, 11, 305 .

AMA Style

Alia Raees, Muhammad Jamal, Ikram Ahmed, Mika Silanpaa, Tahani Saad Algarni. Synthesis and Characterization of CeO2/CuO Nanocomposites for Photocatalytic Degradation of Methylene Blue in Visible Light. Coatings. 2021; 11 (3):305.

Chicago/Turabian Style

Alia Raees; Muhammad Jamal; Ikram Ahmed; Mika Silanpaa; Tahani Saad Algarni. 2021. "Synthesis and Characterization of CeO2/CuO Nanocomposites for Photocatalytic Degradation of Methylene Blue in Visible Light." Coatings 11, no. 3: 305.

Research article
Published: 03 February 2021 in Environmental Science and Pollution Research
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Discharge of untreated textile wastewaters loaded with dyes is not only contaminating the soil and water resources but also posing a threat to the health and socioeconomic life of the people. Hence, there is a need to devise the strategies for effective treatment of such wastewaters. The present study reports the catalytic potential of biogenic ZnO nanoparticles (ZnO NPs) synthesized by using a bacterial strain Pseudochrobactrum sp. C5 for degradation of dyes and wastewater treatment. The catalytic potential of the biogenic ZnO NPs for degradation of dyes and wastewater treatment was also compared with that of the chemically synthesized ones. The characterization of the biogenic ZnO NPs through FT-IR, XRD, and field emission scanning electron microscopy (FESEM) indicated that these are granular agglomerated particles having a size range of 90–110 nm and zeta potential of −27.41 mV. These catalytic NPs had resulted into almost complete (> 90%) decolorization of various dyes including the methanol blue and reactive black 5. These NPs also resulted into a significant reduction in COD, TDS, EC, pH, and color of two real wastewaters spiked with reactive black 5 and reactive red 120. The findings of this study suggest that the biosynthesized ZnO NPs might serve as a potential green solution for treatment of dye-loaded textile wastewaters.

ACS Style

Khadija Siddique; Muhammad Shahid; Tanvir Shahzad; Faisal Mahmood; Habibullah Nadeem; Muhammad Saif Ur Rehman; Sabir Hussain; Omer Sadak; Sundaram Gunasekaran; Tahseen Kamal; Ikram Ahmad. Comparative efficacy of biogenic zinc oxide nanoparticles synthesized by Pseudochrobactrum sp. C5 and chemically synthesized zinc oxide nanoparticles for catalytic degradation of dyes and wastewater treatment. Environmental Science and Pollution Research 2021, 28, 28307 -28318.

AMA Style

Khadija Siddique, Muhammad Shahid, Tanvir Shahzad, Faisal Mahmood, Habibullah Nadeem, Muhammad Saif Ur Rehman, Sabir Hussain, Omer Sadak, Sundaram Gunasekaran, Tahseen Kamal, Ikram Ahmad. Comparative efficacy of biogenic zinc oxide nanoparticles synthesized by Pseudochrobactrum sp. C5 and chemically synthesized zinc oxide nanoparticles for catalytic degradation of dyes and wastewater treatment. Environmental Science and Pollution Research. 2021; 28 (22):28307-28318.

Chicago/Turabian Style

Khadija Siddique; Muhammad Shahid; Tanvir Shahzad; Faisal Mahmood; Habibullah Nadeem; Muhammad Saif Ur Rehman; Sabir Hussain; Omer Sadak; Sundaram Gunasekaran; Tahseen Kamal; Ikram Ahmad. 2021. "Comparative efficacy of biogenic zinc oxide nanoparticles synthesized by Pseudochrobactrum sp. C5 and chemically synthesized zinc oxide nanoparticles for catalytic degradation of dyes and wastewater treatment." Environmental Science and Pollution Research 28, no. 22: 28307-28318.

Journal article
Published: 17 December 2020 in Arabian Journal of Chemistry
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Here, we have manufactured extremely porous photoelectrodes comprised of ZnO/TiO2 by adding lignocellulose (LC) fibers extracted from the self-growing plant (Lily) on fluorine-doped tin oxide (FTO) substrate using doctor blade technique for dye-sensitized solar cells (DSSCs) uses and first-principle calculations were performed for electronic band structures and density of state (DOS). Density functional theory (DFT) results revealed a high conductivity and narrow electronic bandgap after doping with LC. Experimental results showed the effect of the addition of LC in ZnO (ZnO + LC) and TiO2 (TiO2 + LC) on the structure, morphology, and power conversion efficiency (PCE) was studied in detail using powder X-ray diffraction, scanning electron microscope, UV–visible spectroscopy, and solar simulant. The addition of LC in ZnO/TiO2 increases the porosity and surface area for higher dye loading and light-harvesting while decreasing the backward scattering of electrons. These developments result in a 38% increase in PCE of (ZnO + LC) as related to the ZnO based DSSC and a 104% increase in the case of (TiO2 + LC) based DSSC. In this work, we express that the development of highly porous metal oxide nano-composites by mixing LC fibers which may solve the electrolyte leakage issue and enhance the porosity of the photoelectrodes and thus enhance the PCE of DSSCs.

ACS Style

Muhammad Saleem; Muhammad Irfan; Sobia Tabassum; Munirah D Albaqami; Muhammad Sufyan Javed; Shahid Hussain; Muhammad Pervaiz; Ikram Ahmad; Awais Ahmad; Muhammad Zuber. Experimental and theoretical study of highly porous lignocellulose assisted metal oxide photoelectrodes for dye-sensitized solar cells. Arabian Journal of Chemistry 2020, 14, 102937 .

AMA Style

Muhammad Saleem, Muhammad Irfan, Sobia Tabassum, Munirah D Albaqami, Muhammad Sufyan Javed, Shahid Hussain, Muhammad Pervaiz, Ikram Ahmad, Awais Ahmad, Muhammad Zuber. Experimental and theoretical study of highly porous lignocellulose assisted metal oxide photoelectrodes for dye-sensitized solar cells. Arabian Journal of Chemistry. 2020; 14 (2):102937.

Chicago/Turabian Style

Muhammad Saleem; Muhammad Irfan; Sobia Tabassum; Munirah D Albaqami; Muhammad Sufyan Javed; Shahid Hussain; Muhammad Pervaiz; Ikram Ahmad; Awais Ahmad; Muhammad Zuber. 2020. "Experimental and theoretical study of highly porous lignocellulose assisted metal oxide photoelectrodes for dye-sensitized solar cells." Arabian Journal of Chemistry 14, no. 2: 102937.