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Volume 10
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10.3390/app10051697
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Article

Cerium-Oxide-Nanoparticle-Decorated Zinc Oxide with Enhanced Photocatalytic Degradation of Methyl Orange

by
Chatchai Rodwihok
1,
Duangmanee Wongratanaphisan
2,
Tran Van Tam
1,
Won Mook Choi
1,
Seung Hyun Hur
1 and
Jin Suk Chung
1,*
1
School of Chemical Engineering, University of Ulsan, Daehak-ro 93, Nam-gu, Ulsan 680-749, Korea
2
Research Center in Physics and Astronomy, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(5), 1697; https://doi.org/10.3390/app10051697
Submission received: 30 January 2020 / Revised: 22 February 2020 / Accepted: 24 February 2020 / Published: 2 March 2020
(This article belongs to the Section Environmental Sciences)
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Abstract

Cerium-oxide-nanoparticle-decorated zinc oxide was successfully prepared using a simple one-pot hydrothermal technique with different weight% Ce doping. It was found that an increase in Ce doping has an effect on the optical energy band-gap tunability. Ce dopant provides electron trapping on Ce/ZnO nanocomposites and also acts as a surface defect generator during hydrothermal processing. Additionally, a bi-metal oxide heterojunction forms, which acts as a charge separator to obstruct charge recombination and to increase the photodegradation performance. It was found that the methyl orange (MO) degradation performance improved with an increase in Ce doping. The decomposition of MO went from 69.42% (pristine ZnO) to 94.06% (7% Ce/ZnO) after 60 min under fluorescent lamp illumination.
Keywords: cerium oxide/zinc oxide; methyl orange; energy band-gap tunability; photocatalytic activity cerium oxide/zinc oxide; methyl orange; energy band-gap tunability; photocatalytic activity

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MDPI and ACS Style

Rodwihok, C.; Wongratanaphisan, D.; Tam, T.V.; Choi, W.M.; Hur, S.H.; Chung, J.S. Cerium-Oxide-Nanoparticle-Decorated Zinc Oxide with Enhanced Photocatalytic Degradation of Methyl Orange. Appl. Sci. 2020, 10, 1697. https://doi.org/10.3390/app10051697

AMA Style

Rodwihok C, Wongratanaphisan D, Tam TV, Choi WM, Hur SH, Chung JS. Cerium-Oxide-Nanoparticle-Decorated Zinc Oxide with Enhanced Photocatalytic Degradation of Methyl Orange. Applied Sciences. 2020; 10(5):1697. https://doi.org/10.3390/app10051697

Chicago/Turabian Style

Rodwihok, Chatchai, Duangmanee Wongratanaphisan, Tran Van Tam, Won Mook Choi, Seung Hyun Hur, and Jin Suk Chung. 2020. "Cerium-Oxide-Nanoparticle-Decorated Zinc Oxide with Enhanced Photocatalytic Degradation of Methyl Orange" Applied Sciences 10, no. 5: 1697. https://doi.org/10.3390/app10051697

APA Style

Rodwihok, C., Wongratanaphisan, D., Tam, T. V., Choi, W. M., Hur, S. H., & Chung, J. S. (2020). Cerium-Oxide-Nanoparticle-Decorated Zinc Oxide with Enhanced Photocatalytic Degradation of Methyl Orange. Applied Sciences, 10(5), 1697. https://doi.org/10.3390/app10051697

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