引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 87次   下载 37 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Highly Responsive and Selective Ethanol Gas Sensor Based on Co3O4-Modified SnO2 Nanofibers
Dong-dong Chen,Zhou Li,Xin Jin,Jian-xin Yi*
Author NameAffiliationE-mail
Dong-dong Chen State Key Laboratory of Fire Science, Department of Safety Science and Engineering, University of Science and Technology of China, Hefei 230026, China  
Zhou Li State Key Laboratory of Fire Science, Department of Safety Science and Engineering, University of Science and Technology of China, Hefei 230026, China  
Xin Jin State Key Laboratory of Fire Science, Department of Safety Science and Engineering, University of Science and Technology of China, Hefei 230026, China  
Jian-xin Yi* State Key Laboratory of Fire Science, Department of Safety Science and Engineering, University of Science and Technology of China, Hefei 230026, China yjx@ustc.edu.cn 
Abstract:
SnO2 nanofibers were synthesized by electrospinning and modified with Co3O4 via impregnation in this work. Chemical composition and morphology of the nanofibers were systematically characterized, and their gas sensing properties were investigated. Results showed that Co3O4 modification significantly enhanced the sensing performance of SnO2 nanofibers to ethanol gas. For a sample with 1.2 mol% Co3O4, the response to 100 ppm ethanol was 38.0 at 300℃, about 6.7 times larger than that of SnO2 nanofibers. In addition, the response/recovery time was also greatly reduced. A power-law dependence of the sensor response on the ethanol concentration as well as excellent ethanol selectivity was observed for the Co3O4/SnO2 sensor. The enhanced ethanol sensing performance may be attributed to the formation of p-n heterojunctions between the two oxides.
Key words:  SnO2 nanofibers  Heterojunction  Electrospinning  Impregnation  Gas sensors
FundProject:This work was supported by the National Natural Science Foundation of China (No.U1432108) and the Fundamental Research Funds for the Central Universities (No.WK2320000034).
基于Co3O4修饰SnO2纳米纤维的高响应和高选择性乙醇气体传感器
陈冬冬,李洲,金鑫,易建新*
摘要:
关键词:  
DOI:10.1063/1674-0068/30/cjcp1704080
分类号: