MoS_2-石墨烯的制备及其电催化析氢性能的研究  

Preparation of MoS_2/graphene composites and its electrocatalytic water splitting performance

作　　者：王易娜 杜记民[2] 李凯迪 杨梦可 崔先露 程雪纯 任小飞 WANG Yi-na;DU Ji-min;LI Kai-di;YANG Meng-ke;CUI Xian-lu;CHENG Xue-chun;REN Xiao-fei(College of Chemistry and Molecular Engineering,Zhengzhou University,Zhengzhou 450001,China;College of Chemistry&Chemical Engineering,Anyang Normal University,Anyang 455000,China)

机构地区：[1]郑州大学化学与分子工程学院,河南郑州450001 [2]安阳师范学院化学化工学院,河南安阳455000

出　　处：《化学研究与应用》2019年第4期690-696,共7页Chemical Research and Application

基　　金：国家自然科学基金项目(210030010)资助;河南省科技创新杰出青年项目(144100510005)资助;河南省高校创新人才项目(13HASTIT014)资助

摘　　要：本文利用改进的Hummers方法合成层状的石墨烯,并用原位合成法在石墨烯上负载了颗粒状二硫化钼。通过扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X-射线光电子能谱分析仪(XPS)、粉末X-射线衍射仪(XRD)、比表面及孔隙度分析仪对所合成物质的形貌、结构、比表面积及孔径进行分析;使用电化学工作站测试催化剂的线性循环伏安和Tafel曲线来分析所合成催化剂的电化学析氢性能。结果表明在所有样品中石墨烯/二硫化钼-21.7复合物的电催化性能最好,其在电流密度为-10 mA·cm^(-2)时过电位为-193 mV。In this paper,layered grapheme was synthesized by improved Hummers method.With ammonium tetrathiomolybdate as precursor.Synthesized nanoparticle shaped MoS 2/graphene composites by the method of photodeposition under nitrogen atmosphere.Then,Scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray photoelectron spectrometer(XPS),X-ray diffractometer(XRD)and specific surface and porosity analyzer were applied to analyse their morphology,structure,surface area and pore volume of composites.Linear cyclic voltammetry and Tafel plots were tested by electrochemical workstation to analyse the performance of hydrogen evolution reaction(HER).The results indicate that MoS 2/graphene-21.7 composite has the best performance compared with other samples,which can achieve a overpotential of-193 mV at the current density of-10 mA·cm^2.

关 键 词：石墨烯 二硫化钼 光分解沉积法 氢还原反应 电催化分解水 

分 类 号：O614.12[理学—无机化学]