Improvement of gas sensing performance for tin dioxide sensor through construction of nanostructures

被引：37

作者：

Zhang, Rui ^{[1
]}

Xu, Ziwei ^{[1
]}

Zhou, Tingting ^{[1
]}

Fei, Teng ^{[1
,2
]}

Wang, Rui ^{[1
]}

Zhang, Tong ^{[1
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Jilin, Peoples R China

[2] State Key Lab Transducer Technol, Shanghai 200050, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2019年 / 557卷

关键词：

Tin oxide; Porous surface; Crystal facet; VOC; Gas sensor; SNO2; FACET; SURFACE; NANOPARTICLES; NANOFIBERS; ACETONE;

D O I：

10.1016/j.jcis.2019.09.073

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：

Rational design of tin dioxide (SnO2) nanomaterials with superior architectures and outstanding physicochemical capabilities is highly desirable for gas sensors. Here, three SnO2 nanostructures with different morphologies, particles, core-shell spheres and facet-exposed crystals, are developed and further applied to track amounts of volatile organic compounds (VOCs). Porous SnO2 core-in-hollow-shell sphere-based sensors exhibited enhanced sensing properties, especially a higher sensitivity than SnO2 particles. The monocrystalline SnO2 single-crystal-based sensor, which has dominant exposed (1 1 0) and (2 2 1) facets, also showed a superior sensing performance, especially faster response/recovery speed than the SnO2 particle-based sensor. The enhanced gas-sensing properties are mainly ascribed to the structural sensitization, and these results further confirm that the SnO2 core-shell structure and exposed single crystal exposed with high energy can provide more numerous active sites for gas molecule adsorption than that of SnO2 particles. (C) 2019 Elsevier Inc. All rights reserved.

引用

页码：673 / 682

页数：10

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