| MoS_2/g-C_3N_4复合材料的制备及可见光催化性能 |
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| 引用本文： | 徐梦秋,柴波,闫俊涛,汪海波,任占冬.MoS_2/g-C_3N_4复合材料的制备及可见光催化性能[J].无机化学学报,2017,33(3):389-395. |
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| 作者姓名： | 徐梦秋 柴波 闫俊涛 汪海波 任占冬 |
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| 作者单位： | 武汉轻工大学化学与环境工程学院, 武汉 430023,武汉轻工大学化学与环境工程学院, 武汉 430023,武汉轻工大学化学与环境工程学院, 武汉 430023,武汉轻工大学化学与环境工程学院, 武汉 430023,武汉轻工大学化学与环境工程学院, 武汉 430023 |
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| 基金项目： | 武汉轻工大学科研项目（No.2016y18）和湖北省科技支撑计划项目（No.2015BAA100）资助。 |
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| 摘 要： | 首先在N-甲基吡咯烷酮溶液中超声剥离得到少层的MoS_2,将其与石墨相氮化碳(g-C_3N_4)复合,制得MoS_2/g-C_3N_4复合材料。采用X射线衍射(XRD),扫描电镜(SEM),X射线光电子能谱(XPS),傅里叶变换红外光谱(FTIR),Raman光谱,紫外-可见漫反射吸收光谱(DRS)和光致荧光(PL)技术对复合材料进行表征。可见光下考察MoS_2/g-C_3N_4复合材料光催化降解罗丹明B(Rh B)的活性,结果表明:将少量MoS_2与g-C_3N_4复合可明显提高光催化活性,且1%(w/w)MoS_2/g-C_3N_4复合物的光催化活性最高,可能的原因是MoS_2和g-C_3N_4匹配的能带结构,增大了界面间电荷的传输,降低了光生电子-空穴的复合,进而提高了光催化活性。
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| 关 键 词： | MoS2/g-C3N4复合材料 光催化 降解 罗丹明B |
| 收稿时间： | 2016/10/14 0:00:00 |
| 修稿时间： | 2016/12/13 0:00:00 |
Synthesis and Visible Light Photocatalytic Performance of MoS2/g-C3N4 Composites |
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| XU Meng-Qiu,CHAI Bo,YAN Jun-Tao,WANG Hai-Bo and 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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| Authors: | XU Meng-Qiu CHAI Bo YAN Jun-Tao WANG Hai-Bo and REN Zhan-Dong |
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| Institution: | School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China,School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China,School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China,School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China and School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China |
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| 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. |
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| Keywords: | MoS2/g-C3N4 composites photocatalysis degradation rhodamine B |
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