A CuO/TiO_(2)Heterojunction Based CO Sensor with High Response and Selectivity  

作　　者：Wei Wei Huanhuan Zhang Tiyue Tao Xiaohong Xia Yuwen Bao Manon Lourenco Kevin Homewood Zhongbing Huang Yun Gao 

机构地区：[1]Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials,Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry,School of Materials Science&Engineering,Hubei University,Wuhan 430062,China

出　　处：《Energy & Environmental Materials》2023年第3期409-416,共8页能源与环境材料（英文）

基　　金：support from National Natural Science Foundation of China(11874144,12174092,U21A20500);Hubei Provincial Department of Science and Technology(2019CFA079);Wuhan Science and Technology Bureau(2020010601012163);Overseas Expertise Introduction Center for Discipline Innovation(D18025).

摘　　要：The use of heterojunctions is a promising solution to the problem of cross-sensitivity in gas sensors.In this work,a carbon monoxide sensor based on the CuO/TiO_(2)heterojunction was designed and fabricated.Due to the good adsorption properties of CuO materials to CO,and the heterojunction interface charge transfer,the CuO/TiO_(2)thin film sensor exhibits high sensitivity to CO at room temperature.The response is as high as 10.8–200 ppm CO,about 10 times its response to H_(2).Interference from H_(2)is greatly reduced by optimizing the structure of the CuO/TiO_(2)heterojunction.This reliable detection of carbon monoxide with excellent discrimination against H_(2)is of great significance for the development of CO gas sensors.

关 键 词：carbon monoxide CROSS-SENSITIVITY gas sensor HETEROJUNCTION HYDROGEN 

分 类 号：TB383.2[一般工业技术—材料科学与工程] TP212[自动化与计算机技术—检测技术与自动化装置]