Chalcogen-doped zinc oxide nanoparticles for photocatalytic degradation of Rhodamine B under the irradiation of ultraviolet light

Kumar, Sonu; Sharma, Sanjeev K.; Kaushik, R.D.; Purohit, L.P.

doi:10.1016/j.mtchem.2021.100464

Cited by 38 publications

(13 citation statements)

References 66 publications

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“…Therefore, it can be concluded that the degradation perform- 79 0.0066 Q. I. Rahman et al 80 0.0343 M.A. Alvi et al 81 0.0246 P. Nandi et al 43 0.042 S. Kumar et al 82 0.0039 ance of NS and NF is very close, but ZnO NU does not perform as well. For the best-performing catalyst in this work, ZnO NS-800 °C, with a grain size of 45.5 nm and pore size of 20.73 Å, are among the pronounced differences compared to the other samples (Table S1).…”

Section: Photocatalytic Rhb Degradationmentioning

confidence: 98%

Impact on the Photocatalytic Dye Degradation of Morphology and Annealing-Induced Defects in Zinc Oxide Nanostructures

et al. 2023

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In this study, three different morphologies, nanoflower (NF), nano sponge (NS), and nano urchin (NU), of zinc oxide (ZnO) nanostructures were synthesized successfully via a mild hydrothermal method. After synthesis, the samples were annealed in the atmosphere at 300, 600, and 800 °C. Although annealing provides different degradation kinetics for different morphologies, ZnO NS performed significantly better than other morphologies for all annealing temperatures we used in the study. When the photoluminescence, electron paramagnetic resonance spectroscopy, BET surface, and X-ray diffraction analysis results are examined, it is revealed that the defect structure, pore diameter, and crystallinity cumulatively affect the photocatalytic activity of ZnO nanocatalysts. As a result, to obtain high photocatalytic activity in rhodamine B (RhB) degradation, it is necessary to develop a ZnO catalyst with fewer core defects, more oxygen vacancies, near band emission, large crystallite size, and large pore diameter. The ZnO NS-800 °C nanocatalyst studied here had a 35.6 × 10–3 min–1 rate constant and excellent stability after a 5-cycle photocatalytic degradation of RhB.

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Section: Photocatalytic Rhb Degradationmentioning

confidence: 98%

Impact on the Photocatalytic Dye Degradation of Morphology and Annealing-Induced Defects in Zinc Oxide Nanostructures

et al. 2023

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“…Semiconductor photo catalysis using advanced oxidation process (AOP) has greater application in the mineralisation of organic pollutants in waste water treatment. This leads to the formation of CO2, H2O and inorganic ions (6,7). The most commonly suggested mechanism is that absorption of radiation of suitable wavelength generate electron-hole pairs in the catalyst which moves to the surface and initiate redox reaction to the species adsorbed on the catalyst surface (8).…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic dilapidation of organic pollutant SRB in water by mesoporous In 2 S 3

Chandran

Abraham

Jayakrishnan

2023

Preprint

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Sulforhodamine B (C27H30N2O7S2) (SRB) is an amino-xanthene class, fluorescent dye, commonly used for in-vitro cytotoxicity monitoring and for the detection of drug-target interaction especially in the case of anti-cancer drugs. It does not degrade under normal conditions and remains in water as such. In accordance with the principles of green chemistry we have synthesized nano-structured Indium sulphide which demonstrates efficacy in photocatalytic degradation of this organic pollutant. The reusability of the photo catalyst was tested and it was found to degrade exponentially with recycling. The optimum SRB dye load on the photo catalyst was identified to be 0.28 M/gm for which a decay rate constant of ~ 4.58 x 10− 3 min− 1 was obtained. Beyond a critical SRB dye load, the photo catalysis involved direct rupture of the chromophore without an initial N-demethylation step.

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“…Semiconductor-mediated photocatalysis has sparked a lot of interest due to its potency to photodegrade a vast range of organic and inorganic pollutants under ambient conditions without toxic by-products [24]. Semiconductor photocatalysts can be excited to an energy level higher than their bandgap, inducing the generation of energy-rich photo-carriers, which can be involved in redox reactions to decompose organic dyes [25][26][27][28]. The effectiveness of such processes is inextricably linked to the transport of the photogenerated carriers which is influenced by the materials' morphology, particle size, size distribution, dosage, pollutant concentration and pH [29,30].…”

Section: Introductionmentioning

confidence: 99%

Novel MgFe2O4-CuO/GO heterojunction magnetic nanocomposite: Synthesis, characterization, and batch photocatalytic degradation of methylene blue dye

Waheed

Al-Janabi

Foot

2022

Journal of Molecular Liquids

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Chalcogen-doped zinc oxide nanoparticles for photocatalytic degradation of Rhodamine B under the irradiation of ultraviolet light

Cited by 38 publications

References 66 publications

Impact on the Photocatalytic Dye Degradation of Morphology and Annealing-Induced Defects in Zinc Oxide Nanostructures

Impact on the Photocatalytic Dye Degradation of Morphology and Annealing-Induced Defects in Zinc Oxide Nanostructures

Photocatalytic dilapidation of organic pollutant SRB in water by mesoporous In 2 S 3

Novel MgFe2O4-CuO/GO heterojunction magnetic nanocomposite: Synthesis, characterization, and batch photocatalytic degradation of methylene blue dye

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