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Received June 6, 2020
Accepted October 28, 2020
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Photocatalytic degradation characteristics of heterojunction SnO2-CuxO nanopowders of methylene blue under UV light
1Department of Energy Systems Research, Ajou University, Suwon 16499, Korea 2Department of Materials Science and Engineering, Ajou University, Suwon 16499, Korea 3Department of Materials Science and Engineering,, Ajou University, Suwon 16499, Korea
shankarask@ajou.ac.kr
Korean Journal of Chemical Engineering, March 2021, 38(3), 617-623(7), 10.1007/s11814-020-0700-5
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Abstract
p-n heterojunction was constructed using p-type Cupric oxide (CuO) and n-type Tin (IV) oxide (SnO2) nanoparticles using chemical synthesis and annealing method. The synthesized SnO2-CuO nanoparticles were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), etc. The methylene blue (MB) degradation ability of the synthesized SnO2-CuO nanocomposite was investigated under UV illumination. Compared to the undoped SnO2, the SnO2-CuO p-n heterojunction exhibited enhanced MB degradation capability due the effective separation of electron-holes pair that suppresses the recombination. Based on the experimental results, the charge dynamics and the probable dye degradation mechanism via SnO2-CuO nanoparticles was proposed.
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References
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