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Synthesis and Visible Light Photocatalytic Performance of MoS2/g-C3N4 Composites
Author NameAffiliationE-mail
XU Meng-Qiu School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China  
CHAI Bo School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China willycb@163.com 
YAN Jun-Tao School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China  
WANG Hai-Bo School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China  
REN Zhan-Dong School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China  
Abstract: The few layered MoS2 was obtained by liquid-phase ultrasonic exfoliation in the N-methyl-2-pyrrolidone solution, and then coupled with the graphitic carbon nitride (g-C3N4) to construct MoS2/g-C3N4 composites. The as-prepared composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, UV-vis diffuse reflectance absorption spectroscopy (DRS) and Photoluminescence (PL) spectra. The photocatalytic activities of composites were evaluated by the degradation of Rhodamine B (RhB) under visible light irradiation. The experimental results showed that a small amount of MoS2 in the composites could remarkably improve the photocatalytic activity, and 1%(w/w) MoS2/g-C3N4 composite exhibited the best photocatalytic performance. The significantly enhanced photocatalytic activity was probably ascribed to the matched energy band structures between MoS2 and g-C3N4, increasing the interfacial charge transfer and thus inhibiting the recombination of photo-generated electron-holes pairs.
Keywords: MoS2/g-C3N4 composites  photocatalysis  degradation  rhodamine B
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XU Meng-Qiu,CHAI Bo,YAN Jun-Tao,WANG Hai-Bo,REN Zhan-Dong.Synthesis and Visible Light Photocatalytic Performance of MoS2/g-C3N4 Composites[J].Chinese Journal of Inorganic Chemistry,2017,33(3):389-395.
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Chinese Journal of Inorganic Chemistry