A novel ammonia sensor based on high density, small diameter polypyrrole nanowire arrays

被引：72

作者：

Zhang, Lei ^{[1
,2
]}

Meng, Fanli ^{[1
,2
]}

Chen, Yan ^{[1
,2
]}

Liu, Jinyun ^{[1
]}

Sun, Yufeng ^{[1
,3
]}

Luo, Tao ^{[1
]}

Li, Minqiang ^{[1
]}

Liu, Jinhuai ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Intelligent Machines, Key Lab Biomimet Sensing & Adv Robot Technol, Hefei 230031, Peoples R China

[2] Univ Sci & Technol China, Dept Chem, Hefei 230026, Peoples R China

[3] Anhui Univ Technol & Sci, Wuhu 241000, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2009年 / 142卷 / 01期

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

Polypyrrole (PPy); Nanowire arrays; Anodic aluminum oxide (AAO); Ammonia; CARBON NANOTUBES; GAS SENSORS; SENSING BEHAVIORS; FILMS; TEMPLATE; COMPOSITE; POLYMERIZATION; NANOMATERIALS; FABRICATION; RESPONSES;

D O I：

10.1016/j.snb.2009.07.042

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel sensor based on the PPy nanowire arrays with high density, small diameter (about 50 nm) presented a significantly high surface-to-volume ratio. Conducting polypyrrole (PPy) nanowire arrays were synthesized by electropolymerization in the anodic aluminum oxide (AAO) template which was fabricated by two-step anodizing process. Then, two sides of the PPys/AAO were pasted by Si substrates and the AAO template was etched by HF acid. At last, the gold wires were attached on Si substrates, and the sensor came into being. The sensor was sensitive to ammonia at room temperature and showed relatively high response in low concentration and comparatively short response and recovery time. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：204 / 209

页数：6

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