High performance In2(MoO4)3@In2O3 nanocomposites gas sensor with long-term stability

被引：35

作者：

Zhang, Feng-Hua ^{[1
,2
]}

Wang, Yu-Chong ^{[1
]}

Wang, Lei ^{[3
]}

Liu, Jian ^{[4
]}

Ge, Hong-Liang ^{[5
]}

Wang, Bin ^{[1
]}

Huang, Xin-Yu ^{[1
]}

Wang, Xue-Dong ^{[6
]}

Chi, Zong-Tao ^{[1
]}

Xie, Wan-Feng ^{[1
,2
,5
]}

机构：

[1] Qingdao Univ, Sch Elect & Informat Engn, Qingdao 266071, Shandong, Peoples R China

[2] Shandong Univ, Sch Phys, Jinan 250100, Shandong, Peoples R China

[3] Shandong Earthquake Agcy, Key Lab Engn Earthquake, Jinan 250102, Shandong, Peoples R China

[4] Chinese Acad Sci, State Key Lab Solid Lubricat, Lanzhou Inst Chem Phys, Lanzhou 730000, Gansu, Peoples R China

[5] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Shandong, Peoples R China

[6] Soochow Univ, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Jiangsu, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 805卷

基金：

中国国家自然科学基金;

关键词：

Metal oxide semiconductor; In-2(MoO4)(3); Sensing; Hydrothermal; Humidity; ETHANOL SENSING PROPERTIES; ZNO NANORODS; TEMPERATURE; SENSITIVITY; SELECTIVITY; MOLYBDENUM; PHASE;

D O I：

10.1016/j.jallcom.2019.06.369

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：

Metal oxide semiconductor (MOSC) sensors based on nanocrystalline MoO3, In2O3, and their composites are considered to be very sensitive to detect low concentrations of ethanol, ozone, hydrogen, formaldehyde, and nitrogen dioxide. Here, we firstly introduced In-2(MoO4)(3) phase, which has excellent negative thermal expansion and high electric conductivity properties, into In-2(MoO4)(3)@In2O3 crystalline nanocomposites. The gas-sensing performance of the In-2 (MoO4)(3)@In2O3 nanocomposites was studied upon exposure to the ethanol gas with different concentration from 5 to 300 ppm at the optimum temperature (300 degrees C). What's more, the device possesses ultra-high response of 110 and selectivity to ethanol. Particularly, it can effectively work in high humidity (RH = 80%) with super long-term stability of as long as 90 days, compared with the pristine In2O3 sensor and previous reports. The presented novel In-2(MoO4)(3)@In2O3 sensor offers great opportunities for future ethanol detection under harsh conditions. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：180 / 188

页数：9

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