Fe2O3 nanoparticles-decorated MoO3 nanobelts for enhanced chemiresistive gas sensing

被引：67

作者：

Qu, Fengdong ^{[1
,2
]}

Zhou, Xinxin ^{[2
,3
]}

Zhang, Bingxue ^{[2
]}

Zhang, Shendan ^{[2
]}

Jiang, Chunjie ^{[3
]}

Ruan, Shengping ^{[1
]}

Yang, Minghui ^{[2
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, Changchun 130012, Jilin, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Key Lab Marine Mat & Protect Technol, Key Lab Marine Mat & Related Technol, Ningbo 315201, Zhejiang, Peoples R China

[3] Liaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 782卷

基金：

中国国家自然科学基金;

关键词：

Fe2O3/MoO3; Heterostructure; Nanobelts; Xylene; Gas sensor; SELECTIVE DETECTION; XYLENE; METAL; SENSOR; HETEROJUNCTIONS; NANOSTRUCTURES;

D O I：

10.1016/j.jallcom.2018.12.258

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 study, we report the fabrication of high-performance gas sensor based on a heterojunction structure in which Fe2O3 nanoparticles were used to decorate MoO3 nanobelts. The pure MoO3 nanobelts exhibited a response to 100 parts per million (ppm) of xylene (ratio of resistance to air and gas = 9.08), with no obviously lower cross-responses to 100 ppm of ethanol, acetone, benzene, toluene, methanol and butanol. Compared with pristine MoO3 nanobelts, Fe2O3 nanoparticles decorated nanobelts demonstrated about 2-4 times higher response toward xylene. The enhanced sensing properties of Fe2O3 nanoparticles-decorated MoO3 heterostructured nanobelts can be attributed to the formation of heterojunction between Fe2O3 and MoO3. These results, combined with other reported literature, indicate that controlled engineering of surface loading/decorating is an effective strategy for designing highly sensitive and selective semiconducting metal oxide based gas sensors. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：672 / 678

页数：7

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