Photo-Catalytic Activity of Ag-N Co-Doped ZnO/CuO Nanocomposite for Degradation of Methyl Orange

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Authors

  • Jemal Mohammed Yasin
     ,ET
  • O. P. Yadav
     ,ET
  • Abi M. Taddesse
     ,ET

DOI:

https://doi.org/10.18311/jsst/2016/6602

Keywords:

Band-Gap, Degradation, Nanocomposite, Photocatalysts, Rate Constant, Spectroscopy.

Abstract

Nano-size Ag-N co-doped ZnO-CuO composites have been synthesized and tested for their photo-catalytic activity towards degradation of methyl orange in aqueous solution under visible as well as UV radiations. Crystal structure, surface functional groups, metallic composition and band structure of as-synthesized nano-material were investigated using XRD, FTIR, AAS and UV-Vis spectroscopic techniques, respectively. Ag-N co-doped ZnO-CuO photocatalyst showed higher photo-catalytic activity than Ag- or N-doped and undoped composite photocatalysts. The observed highest activity of Ag-N co-doped ZnO-CuO among the studied photo-catalysts, is attributed to the cumulative effects of lowering of band-gap energy and decrease of recombination rate of photo-generated electrons and holes owing to doped N and Ag, respectively. Effects of photo-catalyst load, solution pH and substrate initial concentration on the degradation of methyl orange have also been studied.

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Published

2016-07-06

How to Cite

Yasin, J. M., Yadav, O. P., & Taddesse, A. M. (2016). Photo-Catalytic Activity of Ag-N Co-Doped ZnO/CuO Nanocomposite for Degradation of Methyl Orange. Journal of Surface Science and Technology, 32(1-2), 51–59. https://doi.org/10.18311/jsst/2016/6602

Issue

Volume 32, Issue 1-2, June 2016

Section

Articles
Crossref
Scopus
Google Scholar
Europe PMC
Received 2016-06-28
Accepted 2016-06-28
Published 2016-07-06

 

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