Carbon-assisted synthesis of mesoporous SnO₂ nanomaterial as highly sensitive ethanol gas sensor

详细信息    查看全文

• 作者：Xiaoyuan Feng ^{fengxiaoyuanhao@yahoo.cn}Author Vitae ; Jian JiangAuthor Vitae ; Hao DingAuthor Vitae ; Ruimin DingAuthor Vitae ; Dan LuoAuthor Vitae ; Jianhui ZhuAuthor Vitae ; Yamin FengAuthor Vitae ; Xintang Huang ; ^{xthuang@phy.ccnu.edu.cn}Author Vitae
• 关键词：Carbon-assisted synthesis ; SnO2 ; Networked mesoporous nanostructure ; Gas sensor
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2013
• 出版时间：5 July, 2013
• 年：2013
• 卷：183
• 期：Complete
• 页码：526-534
• 全文大小：3217 K

文摘

Mesoporous SnO₂ nanomaterials with the central pore sizes of 4.1 nm, 6.1 nm and 8.0 nm have been fabricated by a novel carbon-assisted synthesis method (CAS). By using this method, the pore size can be easily regulated by adjusting the concentration of glucose in the precursor solution. The prepared SnO₂ nanomaterials with distinct pore sizes were characterized by transmission electron microscopy (TEM and HRTEM) and nitrogen adsorption-desorption analysis. Besides, the gas sensing properties of these mesoporous SnO₂ nanomaterials were evaluated. Testing results reveal that the three kinds of mesoporous SnO₂ nanomaterials exhibit short response/recovery time to ethanol gas and the ultralow detection limits of 100 ppb, 50 ppb and 400 ppb, respectively. The proper networked mesoporous nanostructure (NMNs) is responsible for the distinct response-recovery behavior and the mechanism to get the ultralow detection limit. The excellent gas sensing characteristic together with large-scale production and low-cost route hold a great promise for the application of ethanol detection at ultra-low concentration.