Synthesis and Use of Low-Band-Gap ZnO Nanoparticles for Water Treatment

Kumar, Sunil; Thakur, Alpana; Rangra, V. S.; Sharma, Shivani

doi:10.1007/s13369-015-1852-1

Cited by 42 publications

(6 citation statements)

References 35 publications

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“…Presently, our group is focused on the synthesis of transition metal oxide NPs and enhancing their properties by doping transition metals in these metal oxides (Kumar et al 2016(Kumar et al , 2017Atul et al 2019;Soni et al 2019Soni et al , 2022. Taking in the consideration, the features of co-precipitation method and cobalt oxide; here we initially targeted the synthesis of bare and doped cobalt oxide NPs employing the coprecipitation method.…”

Section: Introductionmentioning

confidence: 99%

Fe-Doped Nano-Cobalt Oxide Green Catalysts for Sulfoxidation and Photo Degradation

Soni

Maru

Behal

et al. 2023

Preprint

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Nanoparticles (NPs) of cobalt oxide and Fe/Ni-doped cobalt oxide has been prepared by the co-precipitation method. XPS analysis established the chemical nature of these NPs in terms of atomic as well as molecular formulations and EDAX analysis complemented the XPS results displaying the presence of Fe and Ni atoms in the cobalt oxide NPs revealing successful doping of Fe and Ni in cobalt oxide NPs. The impact of Fe and Ni-doping on the structure and physico-chemical properties of cobalt oxide NPs was also established by XPS analysis. The presence of metal-oxide bonds was further established by FTIR (Fourier transform infrared spectroscopy) and HRTEM (High resolution transmission electron microscopy) analysis confirmed the formation of NPs. Among bare and Fe/Ni-doped cobalt oxide NPs, Fe-doped cobalt oxide NPs showed maximum photocatalytic activity against methylene blue as well as Fe-doped cobalt oxide NPs also acted as an excellent catalyst for the sulfoxidation of sulphides with 99 % conversion, and 95 % selectivity under green reaction conditions utilising water as a solvent.

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Section: Introductionmentioning

confidence: 99%

Fe-Doped Nano-Cobalt Oxide Green Catalysts for Sulfoxidation and Photo Degradation

Soni

Maru

Behal

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Fe-doped nano-cobalt oxide green catalysts for sulfoxidation and photo degradation

Soni,

Maru,

Patel

et al. 2023

Clean Techn Environ Policy

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Nanoparticles (NPs) of cobalt oxide and Fe/Ni-doped cobalt oxide has been prepared by the coprecipitation method. XPS analysis established the chemical nature of these NPs in terms of atomic as well as molecular formulations and EDAX analysis complemented the XPS results displaying the presence of Fe and Ni atoms in the cobalt oxide NPs revealing successful doping of Fe and Ni in cobalt oxide NPs. The impact of Fe and Ni-doping on the structure and physico-chemical properties of cobalt oxide NPs was also established by XPS analysis. The presence of metal-oxide bonds was further established by FTIR (Fourier transform infrared spectroscopy) and HRTEM (High resolution transmission electron microscopy) analysis con rmed the formation of NPs. Among bare and Fe/Ni-doped cobalt oxide NPs, Fe-doped cobalt oxide NPs showed maximum photocatalytic activity against methylene blue as well as Fe-doped cobalt oxide NPs also acted as an excellent catalyst for the sulfoxidation of sulphides with 99 % conversion, and 95 % selectivity under green reaction conditions utilising water as a solvent.

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“…In particular, transition metals such as silver, platinum, and iron might improve the charge transfer by trapping the photochemical load carriers and by enhancing the performance of the photochemical degradation process, 14,15 caused by the recombination of electrons and holes before the peroxide activation process. Production), Silver nitrate( AgNO 3 , Purity > 99%, Sigma-Aldrich), Methanol(CH 3 OH, Purity >99.5 % , Scharlau) , Brilliant green C₂₇H₃₃N₂.HO₄S, Purity >99.5 %, Sigma-Aldrich).…”

Section: Introductionmentioning

confidence: 99%

Removal of Pollutants from Aqueous Solutions by using Zinc oxide Nanoparticles

Bedano¹,

Alkaim²

2022

IJPQA

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>This work presents a low-cost method to produce Zinc oxide (ZnO) nanostructured materials for the treatment of water polluted with model organic pollutants (e.g., brilliant green dye). Zinc oxide was prepared using the thermal solvent technique at a temperature of 37°C, at pH 6, and the samples were incinerated for one hour at a temperature of (500°C). Also, silver doped ZnO (Ag-ZnO) was prepared by photo deposition using ultraviolet rays. The photodissociation of Brilliant green dye was studied using ultraviolet rays under different conditions in the presence of Ag-ZnO, studying the effect of some factors, such as the effect of dye concentration and intensity of incident light. The results showed that the smashing efficiency of the zinc oxide surface increased by 92.8% after adding silver. It also showed that the photocatalytic breakdown rate increases with decreasing concentration of Brilliant green dye. Increasing the intensity of the light led to an increase in the rate of photocatalytic breakdown.

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Synthesis and Use of Low-Band-Gap ZnO Nanoparticles for Water Treatment

Cited by 42 publications

References 35 publications

Fe-Doped Nano-Cobalt Oxide Green Catalysts for Sulfoxidation and Photo Degradation

Fe-Doped Nano-Cobalt Oxide Green Catalysts for Sulfoxidation and Photo Degradation

Fe-doped nano-cobalt oxide green catalysts for sulfoxidation and photo degradation

Removal of Pollutants from Aqueous Solutions by using Zinc oxide Nanoparticles

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