Highly sensitive formaldehyde gas sensors based on Ag doped Zn2SnO4/SnO2 hollow nanospheres

被引：53
|
作者：
Zhang, R. [1 ]
Ma, S. Y. [1 ]
Zhang, Q. X. [1 ]
Zhu, K. M. [1 ]
Tie, Y. [1 ]
Pei, S. T. [1 ]
Wang, B. J. [1 ]
Zhang, J. L. [1 ]
机构：
[1] Northwest Normal Univ, Coll Phys & Elect Engn, Key Lab Atom & Mol Phys & Funct Mat Gansu Prov, Lanzhou 730070, Gansu, Peoples R China
来源：
MATERIALS LETTERS | 2019年 / 254卷
关键词：
Ag doped Zn2SnO4/SnO2; Formaldehyde; Sensors; Hollow nanospheres; Semiconductors; SENSING PERFORMANCE; SNO2/ZN2SNO4; NANOPARTICLES; SPHERES;
D O I：
10.1016/j.matlet.2019.07.065
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Zn2SnO4/SnO2 and Ag doped Zn2SnO4/SnO2 hollow nanospheres were successfully prepared by one-step hydrothermal reaction. Their morphology and element composition were characterized by SEM, TEM, XRD, BET and XPS. Gas sensing performance results show that the Ag doped Zn2SnO4/SnO2 sensor exhibited better performance to 50 ppm formaldehyde including higher response (60) and lower optimum operating temperature (140 degrees C) compared with pure Zn2SnO4/SnO2. The lowest detectable concentration is 5 ppm. It demonstrated that Ag doping effectively improves the gas sensitive properties to detect low concentration of formaldehyde gas. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：178 / 181
页数：4
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