Facile Assembly of InVO4/TiO2 Heterojunction for Enhanced Photo-Oxidation of Benzyl Alcohol

Xinyu Zhang; Quanquan Shi; Xin Liu; Jingmei Li; Hui Xu; Hongjing Ding; Gao Li

doi:10.3390/nano12091544

Facile Assembly of InVO₄/TiO₂ Heterojunction for Enhanced Photo-Oxidation of Benzyl Alcohol

Nanomaterials (Basel). 2022 May 3;12(9):1544. doi: 10.3390/nano12091544.

Authors

Xinyu Zhang^{1

2}, Quanquan Shi¹, Xin Liu^{1

3}, Jingmei Li¹, Hui Xu¹, Hongjing Ding¹, Gao Li²

Affiliations

¹ College of Science, Inner Mongolia Agricultural University, Hohhot 010018, China.
² State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
³ Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.

Abstract

In this work, an InVO₄/TiO₂ heterojunction composite catalyst was successfully synthesized through a facile hydrothermal method. The structural and optical characteristics of InVO₄/TiO₂ heterojunction composites are investigated using a variety of techniques, including powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and spectroscopy techniques. The addition of InVO₄ to TiO₂ considerably enhanced the photocatalytic performance in selective photo-oxidation of benzyl alcohol (BA). The 10 wt% InVO_4/TiO₂ composite photocatalyst provided a decent 100% BA conversion with over 99% selectivity for benzaldehyde, and exhibited a maximum conversion rate of 3.03 mmol g^-1 h^-1, which is substantially higher than bare InVO₄ and TiO₂. The excellent catalytic activity of the InVO_4/TiO₂ photocatalyst is associated with the successful assembly of heterostructures, which promotes the charge separation and transfer between InVO₄ and TiO₂.

Keywords: InVO4/TiO2 heterojunction; benzyl alcohol; oxidation; photocatalysis.

Abstract

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