Issue 53, 2017
From the journal:

RSC Advances

One-step synthesis of composite material MWCNT@BiVO4 and its photocatalytic activity

Deqiang Zhao, ORCID logo ae   Wenwen Wang,b   Yaofang Sun,ad   Zihong Fan,c   Mao Du,ae   Qian Zhang,ad   Fangying Jiad  and  Xuan Xu*ae  

* Corresponding authors

a Key Laboratory of Three Gorges Reservoir Region's Eco-Environment Ministry of Education, Chongqing University, Chongqing 400067, China
E-mail: xuxuan@cqu.edu.cn

b Faculty of Urban Construction & Environment Engineering, Chongqing 400045, China

c School of Environmental and Biological Engineering Chongqing Technology and Business University, Chongqing 400067, China

d Joint International Research Laboratory of Green Buildings and Built Environments, Ministry of Education, Chongqing University, Chongqing 400045, China

e National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China

Abstract

In this research, a composite material (MWCNT@BiVO4) was prepared using a one step hydrothermal method. The prepared composite material was characterized by energy-dispersive X-ray analysis, X-ray diffraction, scanning electron microscopy, EDS, UV-Vis diffuse-reflectance spectroscopy, electron spin resonance (ESR), X-ray photoelectron spectroscopy, and photoluminescence spectroscopy. The scanning electron microscopic images showed that MWCNTs were successfully embedded into BiVO4. MWCNT@BiVO4 showed a strong visible-light absorption capacity, high efficiency for electron–hole separation, and excellent stability. The degradation test of RhB was conducted under visible light irradiation. Compared with BiVO4 (K = −0.05657) and P25 (K = −0.03227), MWCNT@BiVO4 (K = −0.11894) realized the highest removal ratio of Rhodamine B (RhB) under visible light irradiation, therefore, MWCNT@BiVO4 might be promoted to practical applications. The stability of MWCNT@BiVO4 was also verified via recycling and reusing experiments. After 5 cycles, MWCNT@BiVO4 could still maintain the removal rate of RhB at 95.96%. In addition, this paper deduced the growth mechanism of MWCNT@BiVO4 and the degradation mechanism of RhB, proving that MWCNT@BiVO4 can be used in future practices.

Graphical abstract: One-step synthesis of composite material MWCNT@BiVO4 and its photocatalytic activity

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Article information

DOI
https://doi.org/10.1039/C7RA04288D
Article type
Paper
Submitted
16 Apr 2017
Accepted
27 Jun 2017
First published
03 Jul 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 33671-33679

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One-step synthesis of composite material MWCNT@BiVO4 and its photocatalytic activity

D. Zhao, W. Wang, Y. Sun, Z. Fan, M. Du, Q. Zhang, F. Ji and X. Xu, RSC Adv., 2017, 7, 33671 DOI: 10.1039/C7RA04288D

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