One-step synthesis of composite material MWCNT@BiVO4 and its photocatalytic activity. Issue 53 (3rd July 2017)

• Record Type: Journal Article
• Authors: Zhao, Deqiang; Wang, Wenwen; Sun, Yaofang; Fan, Zihong; Du, Mao; Zhang, Qian; Ji, Fangying; Xu, Xuan
• Is Part Of: RSC advances. Volume 7:Issue 53(2017)
• Page Start: 33671
• Page End: 33679
• Publication Date: 2017-07-03
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra04288d
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : In this research, a composite material (MWCNT@BiVO4 ) was prepared using a one step hydrothermal method. 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.