基于GO/TiO_2复合材料的乙醇气体传感器  

Ethanol gas sensor based on graphene oxide/TiO_2 composite material

作　　者：赵国刚[1] 马吉阳[2] 单杰智 

机构地区：[1]哈尔滨理工大学,哈尔滨150080 [2]黑龙江科技大学石墨新材料工程研究院,哈尔滨150022 [3]黑龙江科技大学矿业工程学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2015年第3期237-241,共5页Journal of Heilongjiang University of Science And Technology

基　　金：十二五国家科技支撑计划项目(2013BAE04B02;2013BAE04B03)

摘　　要：为探讨氧化石墨烯复合材料的气敏性能,以氧化石墨、钛酸四丁酯为主要原料,采用水热法制备氧化石墨烯(GO)与Ti O2复合材料并研究其乙醇气体敏感性能。以钛酸四丁酯及氧化石墨烯为原料,在水性体系中合成Ti O2质量分数不同的GO/Ti O2复合材料,进行XRD和SEM表征及气敏性能测试,讨论了温度、Ti O2质量分数、乙醇浓度等因素对敏感性的影响。结果表明:在工作温度为250℃时,GO/Ti O2(Ti O2质量分数为10%)具有乙醇最佳的气敏响应,显示了良好的气体敏感性,可以用于检测乙醇的气体浓度。This paper is specifically focused on a study on gas sensing performance of graphene oxide composites. The study consists of preparing graphene oxide / Ti O2（ GO/Ti O2） composite materials from graphite oxide and tetrabutyl titanate as the raw material using hydrothermal method; using tetrabutyl titanate and graphene oxide（ GO） as raw materials to synthetize graphene oxide / Ti O2 composite sensitive material with different content Ti O2 in aqueous systems; using XRD and SEM to characterize them and then test its gas sensing performance; and thereby identifying the effects of temperature,Ti O2 content,ethanol concentration and other factors on sensitivity. The study suggests that,at an operating temperature of 250 ℃,the graphene oxide / Ti O2（ Ti O2 content of 10%） exhibits the best ethanol gas sensing response and a better gas sensitivity,and holds a greater promise for practical application in detecting gas concentration of ethanol.

关 键 词：氧化石墨烯 水热法 气敏传感器 

分 类 号：TB321[一般工业技术—材料科学与工程]