ZnO, Al/ZnO and W/Ag/ZnO nanocomposite and their comparative photocatalytic and adsorptive removal for Turquoise Blue Dye

Noreen, Saima; Zafar, Saad; Bibi, Ismat; Amami, Mongi; Raza, Muhammad Aown Sammar; Alshammari, Fwzah H.; Elqahtani, Zainab Mufarreh; Basha, Beriham; Alwadai, Norah; Nazir, Arif; Khan, Mohammad Ibrahim; Iqbal, Munawar

doi:10.1016/j.ceramint.2022.01.078

Cited by 22 publications

(4 citation statements)

References 39 publications

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“…They can cause serious risks to human health and the natural environment due to their low biodegradability, stability, toxicity, and hazardous potential [ [38] , [39] , [40] , [41] ]. For water treatment, several methods like adsorption, reverse osmosis, foculation, coagulation, evaporation, electro-precipitation, and photocatalytic degradation use UV and solar irradiation [ [42] , [43] , [44] ]. From these methods, photocatalysis has proven to be an important technique for wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of copper oxide nanoparticles using Ephedra Alata plant extract and a study of their antifungal, antibacterial activity and photocatalytic performance under sunlight

atri¹,

Echabaane²,

Bouzidi³

et al. 2023

Heliyon

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Section: Introductionmentioning

confidence: 99%

Green synthesis of copper oxide nanoparticles using Ephedra Alata plant extract and a study of their antifungal, antibacterial activity and photocatalytic performance under sunlight

atri¹,

Echabaane²,

Bouzidi³

et al. 2023

Heliyon

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“…It has been utilized as an adsorbent as well as a photocatalyst for the removal of many types of pollutants. ZnO is a semiconductor with a nanostructure that is made up of tubes, needles, rods, and wires and it has been utilized in different applications [11,12,13]. Many works have been carried out on this subject using various plants like Moringa Oleifera, Rosa Canina, Ponga Pinnata, etc [9].…”

Section: Introductionmentioning

confidence: 99%

Adsorptive performance of green synthesized zinc oxide nanoparticles for the removal of cadmium (II) and lead (II) ions

Chukwuemeka‐Okorie

Ani

Agbo

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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This study has Zinc oxide (ZnO) nanoparticles (NPs) synthesized from the leaf extract of Costus Afers via a green approach. The synthesized zinc oxide nanoparticle (ZnO NPs) showed excellent adsorption capabilities towards Cd (II) and Pb (II) ions. ZnO NPs were characterized by Fourier Transform Infrared (FT-IR), Scanning Electron Microscopy (SEM), and X-ray Diffraction (XRD). The formation of ZnO NPs was confirmed by the absorption band at 825cm−1 and 747cm−1. The XRD and SEM analysis show the high purity and hexagonal structure of ZnO NPs with a crystallite size of 83.56 nm. A batch adsorption experiment was employed to examine the process parameters such as the effect of the initial pH of the solution, initial metal ion concentration, adsorbent mass, and contact time on the sequestration efficiency of Cd (II) and Pb (II) ions. The equilibrium isotherm models were studied using Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherm models. The Langmuir adsorption isotherm provided the best fit for the adsorption process with coefficient of determination (R2) values of 0.988 and 0.986 for cadmium and lead (II) ions respectively, indicating a monolayer surface on ZnONPs. The pseudo-second-order kinetics model presented a good fit for the adsorption of Cd (II) and Pb (II) ions on zinc oxide nanoparticles giving a correlation coefficient of 0.989 for Cd and 0.996 for Pb suggesting that chemisorptions are the rate-determining step.

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“…Several works introduced the Al doping of nanostructured ZnO to improve its photocatalytic activity [ 25 , 26 ]. It was found that Al−doped ZnO has better catalytic activities in dye degradation [ 27 , 28 , 29 ] and shows high electrochemical stability compared to pure ZnO [ 27 ]. The enhancement was attributed either to the increase in ZnO absorption [ 27 ], the contribution of Al 3+ in the catalysis mechanism [ 28 ], or the increase in dye adsorption [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

“…It was found that Al−doped ZnO has better catalytic activities in dye degradation [ 27 , 28 , 29 ] and shows high electrochemical stability compared to pure ZnO [ 27 ]. The enhancement was attributed either to the increase in ZnO absorption [ 27 ], the contribution of Al 3+ in the catalysis mechanism [ 28 ], or the increase in dye adsorption [ 29 ]. However, the reported studies do not investigate the plasmonic features, such as the size, shape, and thickness of Al nanoparticles and their effect on the photocatalytic performance of ZnO.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Activity and Photoluminescence of ZnO Nano-Wires Coupled with Aluminum Nanostructures

et al. 2022

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In this study, we fabricated a hybrid plasmonic/semiconductor material by combining the chemical bath deposition of zinc oxide nanowires (ZnONWs) with the physical vapor deposition of aluminum nanostructures (AlNSs) under controlled temperature and atmosphere. The morphological and the optical properties of the ZnONWs/AlNSs hybrid material fabricated at different temperatures (250, 350, and 450 °C) and thicknesses (5, 7, and 9 nm) of Al layers were investigated. By adjusting the deposition and annealing parameters, it was possible to tune the size distribution of the AlNSs. The resonant coupling between the plasmonic AlNSs and ZnONWs leads to an enhanced photoluminescence response. The photocatalytic activity was studied through photodegradation under UV-light irradiation of methylene blue (MB) adsorbed at the surface of ZnO. The MB photodegradation experiment reveals that the ZnONWs covered with 7 nm aluminum film and annealed at 450 °C exhibit the highest degradation efficiency. The comparison between ZnONws and ZnONws/AlNSs shows a photoluminescence enhancement factor of 1.7 and an increase in the kinetics constant of photodegradation with a factor of 4.

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ZnO, Al/ZnO and W/Ag/ZnO nanocomposite and their comparative photocatalytic and adsorptive removal for Turquoise Blue Dye

Cited by 22 publications

References 39 publications

Green synthesis of copper oxide nanoparticles using Ephedra Alata plant extract and a study of their antifungal, antibacterial activity and photocatalytic performance under sunlight

Green synthesis of copper oxide nanoparticles using Ephedra Alata plant extract and a study of their antifungal, antibacterial activity and photocatalytic performance under sunlight

Adsorptive performance of green synthesized zinc oxide nanoparticles for the removal of cadmium (II) and lead (II) ions

Enhanced Photocatalytic Activity and Photoluminescence of ZnO Nano-Wires Coupled with Aluminum Nanostructures

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