Intermediate electron trap levels generation and enhanced carrier concentration in ZnO by strontium and molybdenum co-doping: an effective approach for dye degradation

In this work, an attempt to augment the photocatalytic dye degrading ability of zinc oxide thin films by suitably doping strontium + molybdenum(Sr + Mo). The ZnO:Sr:Mo film were coated onto glass substrates via automatic nebulizer spray pyrolysis method. The photocatalytic studies were done by degra...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2023, Vol.34 (1), p.5, Article 5
Main Authors: Ravichandran, K., Jyothi, N. Siva, Rathi, R., Dineshbabu, N., Shalini, R., Viji, A., Neethidevan, K.
Format: Article
Language:English
Subjects:
Carrier density
Catalysts
Characterization and Evaluation of Materials
Chemistry and Materials Science
Doping
Dyes
Efficiency
Glass substrates
Materials Science
Methylene blue
Molybdenum
Optical and Electronic Materials
Photocatalysis
Photodegradation
Physics
Pollutants
Spray pyrolysis
Thin films
Water treatment
Zinc oxide
Zinc oxides
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Summary:In this work, an attempt to augment the photocatalytic dye degrading ability of zinc oxide thin films by suitably doping strontium + molybdenum(Sr + Mo). The ZnO:Sr:Mo film were coated onto glass substrates via automatic nebulizer spray pyrolysis method. The photocatalytic studies were done by degrading two dyes viz methyl orange (MO) and methylene blue (MB) and the efficiency of the prepared films was tested at different pH levels. A 97% and 84% decomposition are observed for MB and MO dyes, respectively, in 60 min. The kinetics and reusability of the catalyst were studied. The results indicated that the catalysts exhibit considerable reusability and high photocatalytic efficiency. A possible mechanism for the improved degradation has been elaborated with the support of characterization studies.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-022-09404-1