期刊论文

Synthesis and Visible Light Photocatalytic Performance of MoS_2/g-C_3N_4 Composites

Chai Bo

中文

无机化学学报

1001-4861

2017

33

3

389-395

10.11862/CJIC.2017.045

武汉轻工大学科研项目（No.2016y18） 湖北省科技支撑计划项目（No.2015BAA100）资助

本校为第一且通讯机构

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(RhB)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。

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...