Uniform hierarchical tetradecahedral SnO2/Zn2SnO4 composites for ultrafast response/recovery and selective gas detection at room temperature

被引：11

作者：

Chen, Zi-Yang ^{[1
,2
]}

Jiang, Da-Peng ^{[2
,3
]}

Zhang, Shao-Hui ^{[2
]}

Wang, Chao ^{[2
]}

Huang, Hui ^{[2
]}

Zhang, Long ^{[2
]}

Ding, Liu-Yi ^{[2
]}

Wang, Lin-Jun ^{[1
]}

Pan, Ge-Bo ^{[2
]}

机构：

[1] Shanghai Univ, Sch Mat Sci & Engn, 99 Shangda Rd, Shanghai 200444, Peoples R China

[2] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, 398 Ruoshui Rd, Suzhou 215123, Peoples R China

[3] Univ Sci & Technol China, Nano Sci & Technol Inst, 166 Renai Rd, Suzhou 215123, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2020年 / 741卷

基金：

中国国家自然科学基金;

关键词：

Gas sensor; Zinc stannate; Tin oxide; Ethanol; Room temperature; SNO2 HOLLOW SPHERES; SENSING PROPERTIES; FAST-RESPONSE; PERFORMANCE; SENSOR; ZNO; NANOPARTICLES; ZN2SNO4; CARBON; WO3;

D O I：

10.1016/j.cplett.2019.137067

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, hierarchical tetradecahedral SnO2/Zn2SnO4 composites were synthesized by a simple one-pot method without using surfactants and templates and have a uniform diameter of similar to 1 mu m. Importantly, SnO2/Zn(2)SnO(4 )was used to manufacture gas sensor. After testing the sensor, it displays good selectivity to ethanol and excellent repeatability at room temperature (RT). It has ultra-fast response/recovery times with 9 s and 7 s at 200 ppm ethanol, respectively. Such enhanced gas-sensing performances are probably ascribed to the unique hierarchical tetradecahedral SnO2/Zn2SnO4 structure, the strong interfacial interaction and the existence of heterojunctions between Zn2SnO4 and SnO2.

引用

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