Preparation and gas sensing properties of flower-like WO3 hierarchical architecture

被引：36

作者：

Wei, Shaohong ^{[1
]}

Xing, Yun ^{[1
]}

Li, Yahui ^{[1
]}

Zhao, Yan ^{[1
]}

Du, Weimin ^{[1
]}

Zhou, Meihua ^{[2
]}

机构：

[1] Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Peoples R China

[2] Donghua Univ, Coll Environm Sci & Engn, Shanghai 200051, Peoples R China

来源：

VACUUM | 2016年 / 129卷

基金：

中国国家自然科学基金;

关键词：

Semiconductor; WO3; Hierarchical architecture; Gas sensor; HYDROTHERMAL SYNTHESIS; TEMPLATE-FREE; THIN-FILMS; SENSOR; NANOSTRUCTURES; NANOPARTICLES; MICROSPHERES; PERFORMANCE; DIAGNOSIS; SURFACE;

D O I：

10.1016/j.vacuum.2016.04.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Flower-like WO3 hierarchical architecture has been successfully synthesized through a facile hydro thermal method. The morphology and structure were investigated via X-ray diffraction, field-emission scanning electron microscopy, and transmission electron microscopy. The results indicated that the flower-like WO3 were self-assembled by many ultrathin petal-like nanosheets with thickness of several nanometers. A possible formation mechanism of 3D hierarchical architecture was proposed on basis of time dependent experiments. In addition, the well-defined WO3 hierarchical architectures exhibited high response and good selectivity to ethanol at 300 degrees C with fast response (5-7 s) and recovery (6-9 s) properties, which might substantially benefit from their layer-by-layer ultrathin petal structure. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：13 / 19

页数：7

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