摘要
甲醛是一种典型的室内污染气体,严重危害人的身体健康。ZnSnO3是一种钙钛矿结构的三元金属氧化物,在气敏材料中有广泛应用。通过一步水热法成功合成了不同rGO掺杂的ZnSnO3复合材料,应用X射线衍射、红外光谱分析仪、扫描电子显微镜、热重分析仪、X射线光电子能谱分析仪和比表面积分析仪对复合材料的结构形貌,热稳定性,化学组成及比表面积等进行了表征,并对目标气体(乙醇、丙酮、氨气、苯以及甲醛)进行气敏性能研究。实验结果表明,rGO掺杂ZnSnO3可以有效的改善ZnSnO3的气敏性能,其中4%rGO/ZnSnO3复合材料对30×10^-6甲醛气体具有最高的灵敏度(38.9),快速的响应恢复时间(112 s,15 s),及良好的选择性和稳定性。
Formaldehyde is a typical indoor pollution gas,which harms people's health seriously.ZnSnO3 is a ternary metal oxide with a perovskite structure and is widely used in gas sensing materials.In this paper,different rGO-doped ZnSnO3 composites were successfully synthesized by one-step hydrothermal method.XRD,FTIR,SEM,TGA,XPS and BET methods were adopted to characterize the structure,morphology,thermal stability,chemical composition,and specific surface area of composite materials,and the gas sensing properties to different target gases,such as ethanol,acetone,ammonia,Benzene and formaldehyde,were also investigated.The experimental results showed that the rGO-doped ZnSnO3 could effectively improve the gas sensitivity of ZnSnO3.Among them,the 4%rGO/ZnSnO3 composite had the highest sensitivity to 30×10^-6 formaldehyde gas(38.9),fast response recovery time(112s,15s)and good selectivity and stability.
作者
赵邦渝
黄苓莉
周麒麟
杜若愚
郭威威
ZHAO Bangyu;HUANG Lingli;ZHOU Qilin;DU Ruoyu;GUO Weiwei(Chongqing Key Laboratory of Catalysis and New Functional Materials, College ofEnvironment and Resources, Chongqing Technology and Business University, Chongqing 400067, China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2020年第7期7083-7091,共9页
Journal of Functional Materials
基金
国家自然科学基金资助项目(61604025)
重庆市基础与前沿研究计划资助项目(cstc2018jcyjAX0500)
重庆市教委青年科技资助项目(KJQN201800809)
催化与环境新材料重庆市重点实验室开放课题资助项目(KFJJ2019087)。
