Highly sensitive gas sensor based on Al-doped ZnO nanoparticles for detection of dimethyl methylphosphonate as a chemical warfare agent simulant

被引：103

作者：

Yoo, Ran ^{[1
]}

Cho, Sungmee ^{[1
]}

Song, Min-Jung ^{[2
]}

Lee, Wooyoung ^{[1
]}

机构：

[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea

[2] Kyonggi Univ, Coll Liberal Art & Interdisciplinary Studies, Suwon 443760, Gyeonggi Do, South Korea

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2015年 / 221卷

基金：

新加坡国家研究基金会;

关键词：

Hydrothermal synthesis; Al-doped ZnO; DMMP; Gas sensor; SENSING PROPERTIES; DMMP; FILMS; CO;

D O I：

10.1016/j.snb.2015.06.076

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this paper, we report a dimethyl methylphosphonate (DMMP) gas sensor using synthesized Al-doped ZnO nanoparticles (NPs) via a hydrothermal method. The average particle size of the Al-doped ZnO NPs is similar to 25 nm. The single crystalline phase was observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses. The variation in the response of the Al-doped ZnO NP sensors within operating temperatures showed the highest response and recovery at 2 and 96 s, respectively, at 10 ppm in DMMP at 350 degrees C compared with undoped ZnO NP sensors. Our results showed remarkable sensitivity and selectivity of the Al-doped ZnO NPs sensor toward DMMP. Such increased 02 vacancies and surface reactions with small nanocrystals in the Al-doped ZnO NP sensors offer outstanding sensing performance for DMMP detection. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：217 / 223

页数：7

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