High-sensitivity, high-selectivity, and fast-recovery-speed triethylamine sensor based on ZnO micropyramids prepared by molten salt growth method

被引：77

作者：

Li, Wenru ^{[1
]}

Xu, Hongyan ^{[1
]}

Zhai, Ting ^{[1
]}

Yu, Huanqin ^{[1
]}

Xu, Qi ^{[1
]}

Song, Xiaopan ^{[1
]}

Wang, Jieqiang ^{[1
]}

Cao, Bingqiang ^{[1
]}

机构：

[1] Univ Jinan, Sch Mat Sci & Engn, Lab Inorgan Energy & Environm Mat, Shandong Prov Key Lab Preparat & Measurement, Jinan 250022, Shandong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 695卷

基金：

中国国家自然科学基金;

关键词：

ZnO micropyramids; Molten salt method; TEA sensing; Space-charge layer model; GAS-SENSING PROPERTIES; ROOM-TEMPERATURE; FAST-RESPONSE; NANORODS; CHROMATOGRAPHY; CONSTRUCTION; PERFORMANCE; NANOWIRES; BUNDLE;

D O I：

10.1016/j.jallcom.2016.11.380

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：

ZnO micropyramids had been successfully synthesized by an economical and environmental molten salt method (MSM). Compared with the reported works, we made a comprehensively and deeply sensing research for the ZnO micropyramids based triethylamine (TEA) sensors. The results of characterization reveal that the as-prepared ZnO crystallized sufficiently and have high purity. The sensors based on ZnO micropyramids have better TEA sensing performances, for instance higher response, better selectivity, and faster recovery speed than commercial ZnO. The response of ZnO micropyramids sensors can reach to 45 for 50 ppm of TEA. Moreover, the detection limit can also be as low as 2 ppm. These results indicate that the ZnO micropyramids synthesized by MSM are highly promising candidates for TEA gas detector. The space-charge layer model and the oxygen vacancies theory have also been proposed to interpret the gas sensing performance of ZnO micropyramids. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：2930 / 2936

页数：7

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