共沉淀法制备的CuGa_2O_4及其气敏性能  

Preparation and Gas-Sensing Properties of CuGa_2O_4 by Co-precipitation Method

作　　者：高翠苹 汪艳 储向峰[1] 梁士明 高奇 李学 GAO Cui-Ping;WANG Yan;CHU Xiang-Feng;LIANG Shi-Ming;GAO Qi;LI Xue(School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243032, China;School of Materials Science and Engineering, Linyi University, Linyi, Shandong 276005, China)

机构地区：[1]安徽工业大学化学与化工学院,马鞍山243032 [2]临沂大学材料科学与工程学院,临沂276005

出　　处：《无机化学学报》2019年第1期59-64,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.61671019)资助项目

摘　　要：采用共沉淀法制备了CuGa_2O_4粉体,采用X射线衍射(XRD)、扫描电镜(SEM)、X射线光电子能谱(XPS)等对CuGa_2O_4粉体进行了表征。研究了热处理温度和pH对CuGa_2O_4粉体气敏性能的影响,实验结果表明热处理温度为800℃,pH=6.00(热处理4h)条件下制备出的CuGa_2O_4粉体,在室温下(18±2)℃对三甲胺(TMA)具有较好的气敏选择性和较高灵敏度,对1 000μL·L^(-1)的TMA的灵敏度达到310.1,响应和恢复时间分别约为590和80 s,对1μL·L^(-1)的TMA的灵敏度可达到1.3。CuGa2O4 powders were prepared by co-precipitation method and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), etc. The effect of heat treatment temperature and pH on the gas sensing properties of CuGa2O4 powders was investigated. The results indicated that CuGa2O4 powders prepared by calcining at 800 ℃ for 4 h and pH=6.00 exhibited good gas sensing selectivity and high sensitivity to trimethylamine (TMA) at room temperature (18±2)℃. The responses to 1 000 and 1 μL·L^-1 TMA reached 310.1 and 1.3, respectively, and the response and recovery times for 1 000 μL·L^-1 TMA were 590 and 80 s.

关 键 词：CuGa2O4 气敏性能 共沉淀法 三甲胺 

分 类 号：O614.121[理学—无机化学] O614.371[理学—化学]