Characterization and mechanism analysis of AgBr mixed cuboid WO3 rods with enhanced photocatalytic activity

Shanshan Yao; Sikang Xue; Junhao Zhang; Xiangqian Shen

doi:10.1039/C6RA16442K

Characterization and mechanism analysis of AgBr mixed cuboid WO₃ rods with enhanced photocatalytic activity

Shanshan Yao,*^a Sikang Xue,^a Junhao Zhang^b and Xiangqian Shen^a

* Corresponding authors

^a Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212313, P. R. China
E-mail: yaosshan@ujs.edu.cn

^b School of Environmental and Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, P. R. China

Abstract

Cuboid rods of monoclinic WO₃ (m-WO₃) were successfully prepared by employing preoxo-polytungstic acid as the precursor via a hydrothermal method. AgBr/m-WO₃ photocatalysts with varying loadings of AgBr were synthesized and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM). Photocatalytic degradation of rhodamine B (rhB), methyl orange (MO) and methyl blue (MB) were carried out to evaluate the photocatalytic activity of AgBr/m-WO₃ under visible-light irradiation (λ ≥ 420 nm). Among such catalysts, the AgBr (30 wt%)/m-WO₃ exhibits the highest visible-light-responsible photoactivity. However, these AgBr/m-WO₃ materials gradually lost their photoactivity in the cycling photocatalytic tests. Possible mechanisms for both the enhance photocatalytic activity and deactivation of the AgBr/m-WO₃ were proposed on basis of theoretical speculation and experimental observations.

Article information

https://doi.org/10.1039/C6RA16442K

Article type

Paper

Submitted

25 Jun 2016

Accepted

26 Sep 2016

First published

26 Sep 2016

Download Citation

RSC Adv., 2016,6, 93436-93444

Permissions

Request permissions

Characterization and mechanism analysis of AgBr mixed cuboid WO₃ rods with enhanced photocatalytic activity

S. Yao, S. Xue, J. Zhang and X. Shen, RSC Adv., 2016, 6, 93436 DOI: 10.1039/C6RA16442K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

RSC Advances

Characterization and mechanism analysis of AgBr mixed cuboid WO₃ rods with enhanced photocatalytic activity

Abstract

Article information

Download Citation

Permissions

Characterization and mechanism analysis of AgBr mixed cuboid WO₃ rods with enhanced photocatalytic activity

Social activity

Search articles by author

Spotlight

Advertisements