Journal
RSC ADVANCES
Volume 7, Issue 53, Pages 33671-33679Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra04288d
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Funding
- Science and Technology Innovation Special Projects of Social Undertakings and Livelihood Support, Chongqing [cstc2016shmszx20009]
- Science and Technology Project of Chongqing Education Commission [KJ1500604]
- graduate scientific research and innovation foundation of Chongqing, China [CYB16008]
- Chongqing Research Program of Basic Research and Frontier Technology [cstc2015jcyjA20013]
- 111 Project [B13041]
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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.
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