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Materials 2017, 10(8), 976; https://doi.org/10.3390/ma10080976

Preparation and Characterization of Mo Doped in BiVO4 with Enhanced Photocatalytic Properties

1
Chongqing Key Laboratory of Environmental Materials and Remediation Technology, Research Institute for New Materials Technology, Chongqing University of Arts and Sciences, Yongchuan, Chongqing 402160, China
2
College of Chemistry and Materials Engineering, Anhui Science and Technology of University, Fengyang 233100, China
3
School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
*
Authors to whom correspondence should be addressed.
Received: 3 July 2017 / Revised: 17 August 2017 / Accepted: 17 August 2017 / Published: 21 August 2017
(This article belongs to the Section Energy Materials)
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Abstract

Molybdenum (Mo) doped BiVO4 was fabricated via a simple electrospun method. Morphology, structure, chemical states and optical properties of the obtained catalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectroscopy (DRS), N2 adsorption–desorption isotherms (BET) and photoluminescence spectrum (PL), respectively. The photocatalytic properties indicate that doping Mo into BiVO4 can enhance the photocatalytic activity and dark adsorption ability. The photocatalytic test suggests that the 1% Mo-BiVO4 shows the best photocatalytic activity, which is about three times higher than pure BiVO4. Meanwhile, 3% Mo-BiVO4 shows stronger dark adsorption than pure BiVO4 and 1% Mo-BiVO4. The enhancement in photocatalytic property should be ascribed to that BiVO4 with small amount of Mo doping could efficiently separate the photogenerated carries and improve the electronic conductivity. The high concentration doping would lead the crystal structure transformation from monoclinic to tetragonal phase, as well as the formation of MoO3 nanoparticles on the BiVO4 surface, which could also act as recombination centers to decrease the photocatalytic activity. View Full-Text
Keywords: BiVO4; MoO3; photocatalyst; visible light BiVO4; MoO3; photocatalyst; visible light
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Liu, B.; Yan, X.; Yan, H.; Yao, Y.; Cai, Y.; Wei, J.; Chen, S.; Xu, X.; Li, L. Preparation and Characterization of Mo Doped in BiVO4 with Enhanced Photocatalytic Properties. Materials 2017, 10, 976.

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