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Open AccessArticle

Visible Light Driven Heterojunction Photocatalyst of CuO–Cu2O Thin Films for Photocatalytic Degradation of Organic Pollutants

1
Faculty of Biosciences & Medical Engineering, University Technology Malaysia, Johor 81310, Malaysia
2
Department of Civil & Environmental Engineering, National University of Singapore, Singapore 119260, Singapore
3
Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore 117575, Singapore
4
Electrical and Computer Engineering, National University of Singapore, Singapore 119260, Singapore
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Nanomaterials 2019, 9(7), 1011; https://doi.org/10.3390/nano9071011
Received: 22 June 2019 / Revised: 12 July 2019 / Accepted: 12 July 2019 / Published: 13 July 2019
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Abstract

A high recombination rate and low charge collection are the main limiting factors of copper oxides (cupric and cuprous oxide) for the photocatalytic degradation of organic pollutants. In this paper, a high performance copper oxide photocatalyst was developed by integrating cupric oxide (CuO) and cuprous oxide (Cu2O) thin films, which showed superior performance for the photocatalytic degradation of methylene blue (MB) compared to the control CuO and Cu2O photocatalyst. Our results show that a heterojunction photocatalyst of CuO–Cu2O thin films could significantly increase the charge collection, reduce the recombination rate, and improve the photocatalytic activity. View Full-Text
Keywords: photocatalytic degradation; CuO; Cu2O; heterojunction photocatalytic degradation; CuO; Cu2O; heterojunction
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Dasineh Khiavi, N.; Katal, R.; Kholghi Eshkalak, S.; Masudy-Panah, S.; Ramakrishna, S.; Jiangyong, H. Visible Light Driven Heterojunction Photocatalyst of CuO–Cu2O Thin Films for Photocatalytic Degradation of Organic Pollutants. Nanomaterials 2019, 9, 1011.

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