Enhanced solar-light-driven photocatalytic activity of surfactant-assisted Sn4+-doped ZnO

The suggested work concentrates on preparing ZnO and the surfactant sodium hexametaphosphate (SHMP)-assisted pure and Sn 4+ -doped ZnO photocatalysts to degrade the organic dye methyl orange (MO). For that, a low-temperature hydrothermal technique was employed. For preparing the surfactant-assisted...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2021-03, Vol.32 (5), p.6438-6453
Main Authors: Shanmugam, N., Meena, A., Suthakaran, S.
Format: Article
Language:English
Subjects:
Catalytic activity
Characterization and Evaluation of Materials
Chemistry and Materials Science
Degradation
Doping
Dyes
Light irradiation
Low temperature
Materials Science
Optical and Electronic Materials
Optical properties
Photocatalysis
Photocatalysts
Photovoltaic cells
Structural analysis
Surfactants
Tin
Wurtzite
Zinc oxide
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Summary:The suggested work concentrates on preparing ZnO and the surfactant sodium hexametaphosphate (SHMP)-assisted pure and Sn 4+ -doped ZnO photocatalysts to degrade the organic dye methyl orange (MO). For that, a low-temperature hydrothermal technique was employed. For preparing the surfactant-assisted Sn-doped ZnO photocatalyst, varied levels (5, 10 and 15 mM) of Sn 4+ ions have been employed. The prepared products were investigated for their structural, optical and morphological properties. The results of structural analysis reveal the hexagonal wurtzite phase of ZnO. The band gap of ZnO estimated using Kubelka–Munk function revealed a reduction from 3.34 to 3.28 eV on 5 mM of Sn 4+ doping and then stepped up as the concentration of doping increases. The photocatalytic response of the catalysts was analysed to degrade the organic dye methyl orange (MO) under solar light irradiation. The surfactant-assisted ZnO doped with 5 mM of Sn 4+ ions displayed better performance (90%) than the ZnO (76%) and the surfactant-assisted ZnO (80%) in MO degradation.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-021-05361-3