| MoS2/g-C3N4复合材料的制备及可见光催化性能 |
| Synthesis and Visible Light Photocatalytic Performance of MoS2/g-C3N4 Composites |
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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MoS2，将其与石墨相氮化碳（g-C3N4）复合，制得MoS2/g-C3N4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MoS2/g-C3N4复合材料光催化降解罗丹明B（RhB）的活性，结果表明：将少量MoS2与g-C3N4复合可明显提高光催化活性，且1%（w/w）MoS2/g-C3N4复合物的光催化活性最高，可能的原因是MoS2和g-C3N4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。 |
| 关键词: MoS2/g-C3N4复合材料 光催化 降解 罗丹明B |
| 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。 |
| 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 |
| 投稿时间：2016-10-14 修订日期：2016-12-13 |
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| 徐梦秋,柴波,闫俊涛,汪海波,任占冬.MoS2/g-C3N4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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