二硫化钼纳米片的制备及其光敏和气敏特性研究  

Fabrication and Characteristics of MoS_2 Nanosheets on Photo-sensing and Gas-sensing

作　　者：马浩 杨瑞霞 李春静 韩应宽 MA Hao;YANG Ruixia;LI Chunjing;HAN Yingkuan(School of Electronics and Information Engineering,Hebei University of Technology,Tianjin 300400)

机构地区：[1]河北工业大学电子信息工程学院,天津300400

出　　处：《材料导报》2018年第6期860-864,共5页Materials Reports

基　　金：天津市自然科学基金重点项目(15JCZDJC37800);河北省自然科学基金(F2014202184)

摘　　要：利用高温硫化法制备了高纯度MoS_2纳米片。采用X射线衍射仪(XRD)、拉曼光谱仪(Raman spectrometer)、扫描电镜(SEM)和能谱仪(EDS)对MoS_2纳米片的物相、结晶质量以及形貌进行了表征,分析了反应温度对MoS_2纳米片的影响,并对MoS_2纳米片的光敏性和气敏特性进行了研究。结果表明,MoS_2纳米片对绿光响应度更高,红光次之,对甲醇和乙醇两种气体均有较高的灵敏度和响应/恢复速率,并对其气敏机理进行了讨论。High-purity MoS 2 nanosheets have been synthesized by thermal sulfuration method.The phase and morphology of the samples were characterized by X-ray diffraction,Raman spectrometer,scanning electron microscope and energy dispersive spectrometer.The effect of reaction temperature on the MoS 2 nanosheets was analyzed.The photo sensitive and gas sensitive properties of MoS 2 were studied.It was found that the nanosheets was more sensitive to the green light than the red light.High sensor response and fast response/recovery time to methanol,ethanol were observed in MoS 2 nanosheets based device,and its gas sensing mechanism was discussed.

关 键 词：MOS2 纳米片 光敏特性 气敏特性 

分 类 号：TQ125[化学工程—无机化工]