SnS2纳米片的制备及其对NO2气体的检测  

SnS2 Nanoplates:Synthesis and NO2 Sensing Property

作　　者：山巍[1,2] 傅正钱 张发强 马名生[1] 刘志甫[1,2] 李永祥[1,2] SHAN Wei;FU Zhengqian;ZHANG Faqiang;MA Mingsheng;LIU Zhifu;LI Yongxiang(Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海硅酸盐研究所,上海200050 [2]中国科学院大学材料与光电研究中心,北京100049

出　　处：《无机材料学报》2020年第4期497-504,共8页Journal of Inorganic Materials

基　　金：National Natural Science Foundation of China(51502325,61601444)。

摘　　要：二维金属硫化物材料具有较低的电子噪声以及极大的比表面积,使其非常适合用作气敏材料,因此寻求高效可控的方法制备二维金属硫化物材料是目前的研究热点。本研究使用高温化学浴法制备了不同形貌的高结晶二维六方SnS2纳米片。采用不同手段对制备的SnS2纳米片进行表征,并进一步研究了SnS2纳米片的气敏性能。结果显示:油酸、油胺用量(体积)相同时,产物SnS2的形貌是均一的六角形纳米片,其直径约150 nm,厚度约4~6 nm。气敏测试表明该SnS2纳米片对NO2气体具有良好响应,且响应过程可逆,选择性好。其最佳工作温度为130℃,响应和恢复时间分别为98和680 s。Two-dimensional(2D) metal sulfide materials are ideal for use in gas sensing applications due to their low electronic noise and a large specific surface area, and the research on highly efficient and morphologically controllable methods for preparing two-dimensional metal sulfide materials is necessary. Highly crystalline 2D hexagonal SnS2 nanoplates(NPs) with different morphologies were prepared by high temperature chemical bath method. SnS2 NPs were characterized by different techniques, and their gas sensing properties were further investigated. The results show that when the molar ratio of oleic acid(OAc) to oleylamine(OAm) is 1 : 1, the shape of typical SnS2 NPs is a uniform hexagon, with a diameter of about 150 nm and a thickness of 4-6 nm. The gas sensing test shows typical SnS2 NPs are responsive to NO2 gas, and the sensing process is reversible and selective. The optimal operating temperature is 130 ℃, and the response and recovery time are 98 and 680 s, respectively.

关 键 词：二氧化氮气体 二维材料 SnS2 高温化学浴法 气敏检测 

分 类 号：TQ174[化学工程—陶瓷工业]