期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 239, 期 -, 页码 501-510出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.08.053
关键词
SnO2; Gas sensing; Ni doped; Selectivity
资金
- National Natural Science Foundation of China [11205118]
- Science Research Item of Hubei Provincial Education Department [D20141503]
The Ni doped SnO2 has been prepared by two-step hydrothermal treatment and calcination, and characterized by XRD, TEM and Brunauer Emmett Teller N-2 adsorption-desorption analysis. The results exhibit the Ni doped SnO2 is heterostructure composed of Ni-SnO2 on the surface of SnO2 nanoparticles, which are polycrystalline tetragonal with high specific surface area and average grain size of about 10 nm. The sensors based on Ni doped SnO2 show very good gas sensing properties at low working temperature. The gas sensing properties of the Ni doped SnO2 are improved with low Ni-doping concentration (2-4 mol%), but further increase of Ni-doping concentration results in deteriorated response by low conductivity. The sensor based on 2 mol% Ni doped SnO2 and the sensor based on 4 mol% Ni doped SnO2 show ultrahigh responses to n-butanol and formaldehyde, respectively, with good selectivity. These sensors could be promising candidates for selective detection of n-butanol and formaldehyde. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据