Facile synthesis of Z-scheme NiO/α-MoO3 p-n heterojunction for improved photocatalytic activity towards degradation of methylene blue; Li JT, Liu HJ, Liu Z, et al.; 2022; مقال في مجلة;
Arabian Journal of Chemistry ; eISSN: 1878-5352
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Li JT, Liu HJ, Liu Z, Yang DQ, Zhang MZ, Gao LN, Zhou YH, Lu CY
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- English-Great Britain (EN-GB)
In this article, Z-scheme NiO/alpha-MoO3 p-n heterojunction is successfully synthesized by a facile hydrothermal route. The phase and nanostructures are researched through a series of characterizations, such as XRD, SEM, TEM, EDX, XPS and DRS. It is confirmed that the NiO nanoparticles are deposited homogeneously on one dimensional alpha-MoO3 nanobelts and p-n heterojuction is constructed at the interface of alpha-MoO3 and NiO. Photocatalytic activity of the as-synthesized photocatalysts is investigated by photodegradation of methylene blue (MB) under simulated solar light irradiation. Compared with bare alpha-MoO3, the NiO/alpha-MoO3 p-n heterojunction exhibits significantly improved photocatalytic activity and photostability for MB degradation. The improvement in the photocatalytic performance can be attributed to the optimization of the charge transport pathway offered by Z-scheme heterojunctions, which can promote the effective separation of electron-hole pairs. The results indicate that Z-scheme NiO/alpha-MoO3 p-n heterojunction is a novel and efficient photocatalyst with potential application for the removal of organic contaminant in wastewater. (C) 2021 The Author(s). Published by Elsevier B.V. on behalf of King Saud University.
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alpha-MoO3 nanobelts, MB, NIO, Photocatalysis, p-n heterostructure
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