Efficient photocatalytic degradation of bisphenol A and dye pollutants over BiOI/Zn2SnO4 heterojunction photocatalyst

Tao Yan; Hongye Liu; Meng Sun; Xiaodong Wang; Mengmeng Li; Qing Yan; Wenguo Xu; Bin Du

doi:10.1039/C4RA13990A

Efficient photocatalytic degradation of bisphenol A and dye pollutants over BiOI/Zn₂SnO₄ heterojunction photocatalyst†

Tao Yan,^ab Hongye Liu,^c Meng Sun,^a Xiaodong Wang,^c Mengmeng Li,^c Qing Yan,^a Wenguo Xu^b and Bin Du*^a

* Corresponding authors

^a School of Resources and Environment, University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, Jinan 250022, P. R. China
E-mail: binduujn@163.com
Fax: +86 531-82765969
Tel: +86 531-82769235

^b School of Chemistry, Beijing Institute of Technology, Beijing 100081, P. R. China

^c School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, P. R. China

Abstract

BiOI/Zn₂SnO₄ composites with a heterostructure have been synthesized via a chemical deposition method under mild conditions by tuning the BiOI mass ratios. The physicochemical characteristics were investigated by X-ray diffraction (XRD), diffuse reflectance ultraviolet-visible light spectroscopy (DRS), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM). The XRD results show that two phases of BiOI and Zn₂SnO₄ co-existed in the composites. The HRTEM image showing clear lattice fringes proves the formation of a heterojunction at the interfaces of BiOI and Zn₂SnO₄. The photocatalytic degradation of the endocrine disruptor bisphenol A and dyes (MB and RhB) indicated that the BiOI/Zn₂SnO₄ composites were more photoactive than pure BiOI and Zn₂SnO₄. The activity enhancement was mainly ascribed to the formation of a heterojunction between BiOI and Zn₂SnO₄, which facilitated the transfer and separation of photogenerated electron–hole pairs. The photoelectrochemical measurement has also confirmed the enhancement of the separation efficiency of electron–hole pairs.

Supplementary files

Article information

DOI: https://doi.org/10.1039/C4RA13990A
Article type: Paper
Submitted: 06 Nov 2014
Accepted: 05 Jan 2015
First published: 05 Jan 2015

Download Citation

RSC Adv., 2015,5, 10688-10696

Author version available

Download author version (PDF)

Permissions

Request permissions

Efficient photocatalytic degradation of bisphenol A and dye pollutants over BiOI/Zn₂SnO₄ heterojunction photocatalyst

T. Yan, H. Liu, M. Sun, X. Wang, M. Li, Q. Yan, W. Xu and B. Du, RSC Adv., 2015, 5, 10688 DOI: 10.1039/C4RA13990A

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