Cu2+掺杂ZnO纳米棒的制备及气敏性能研究

doi:10.3724/SP.J.1077.2012.11780

无机材料学报 ›› 2012, Vol. 27 ›› Issue (10): 1089-1094.DOI: 10.3724/SP.J.1077.2012.11780 CSTR: 32189.14.SP.J.1077.2012.11780

Cu²⁺掺杂ZnO纳米棒的制备及气敏性能研究

陈同云¹, 朱小华¹, 储向峰¹, 葛秀涛², 董永平¹, 叶明富¹

(1. 安徽工业大学化学与化工学院, 马鞍山243002; 2. 滁州学院化学与生命科学系, 滁州 239000)

收稿日期:2011-12-14 修回日期:2012-02-22 出版日期:2012-10-20 网络出版日期:2012-09-17
作者简介:陈同云(1951–), 男, 教授.
基金资助:
国家自然科学基金(50975002); 安徽工业大学创新团队项目(TD201204); 教育部高校留学回国人员科研项目

Preparation and Gas-sensing Properties of Cu²⁺-doped ZnO Nanorods

CHEN Tong-Yun¹, ZHU Xiao-Hua¹, CHU Xiang-Feng¹, GE Xiu-Tao², DONG Yong-Ping¹, YE Ming-Fu¹

(1. School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China; 2. Department of Chemistry and Life Science, Chuzhou University, Chuzhou 239000, China)

Received:2011-12-14 Revised:2012-02-22 Published:2012-10-20 Online:2012-09-17
About author:CHEN Tong-Yun.
Supported by:
National Natural Science of China (50975002); Innovation Project of Anhui University of Technology (TD201204); The Foundation of the Ministry of Education of China for Returned Scholars

摘要/Abstract

摘要： 通过溶剂热法(无水乙醇)制备了Cu²⁺(0~6mol%)掺杂ZnO纳米棒粉体, 采用X射线衍射仪和扫描电镜对掺杂ZnO纳米粉体的晶体结构和微观形貌进行了表征. 研究了Cu²⁺掺杂比例、溶剂热反应温度及时间对材料气敏性能的影响; 考察ZnO(120℃, 10 h)和3mol% Cu²⁺掺杂ZnO(120℃, 10 h)粉体对应元件对甲醛、乙酸、甲苯、乙醇、丙酮、三甲胺等六种气体的气敏性能. 结果表明: 通过溶剂热法制备的ZnO粉体为纳米棒状结构, 棒长度和直径随Cu²⁺掺杂比例不同发生变化; 3mol% Cu²⁺掺杂ZnO(120℃, 10 h)样品对应元件对低浓度乙醇有很好的选择性, 在395℃工作温度下对1×10^–3乙醇的灵敏度为380.5, 响应恢复时间分别为5 s和40 s, 对1×10^–6乙醇的灵敏度可达4.2.

关键词: ZnO, 纳米棒, 气敏性能

Abstract: Cu²⁺-doped ZnO nano-rod powders (0–6mol%) were prepared via solvothermal method. The crystal and micro-morphology of the doped ZnO nano-rods were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The effects of Cu²⁺ dopant and the thermal condition (reaction temperature and duration) on the gas sensitivities of ZnO nano-rods were studied. The gas sensing properties of pure ZnO nanorod sensor and 3mol% Cu²⁺-doped ZnO nano-rod sensors to formaldehyde, acetic acid, toluene, ethanol, acetone and trimethylamine were also studied. The results show that the micro-morphology of ZnO powders are nano-rods, the lengths and diameters of ZnO nanorods change with the variation of the Cu²⁺ concentration. The sensor based on 3mol% Cu²⁺-doped ZnO nano-rods exhibits high response and good selectivity to dilute ethanol, the responses to 1×10^-3 ethanol and 1×10^–6 ethanol reach 380.5 and 4.2 when it works at 395℃, respectively, and its response time and recovery time are 16 s and 40 s, respectively.

Key words: ZnO, nano-rods, gas sensing properties

中图分类号:

TQ174

陈同云, 朱小华, 储向峰, 葛秀涛, 董永平, 叶明富. Cu²⁺掺杂ZnO纳米棒的制备及气敏性能研究[J]. 无机材料学报, 2012, 27(10): 1089-1094.

CHEN Tong-Yun, ZHU Xiao-Hua, CHU Xiang-Feng, GE Xiu-Tao, DONG Yong-Ping, YE Ming-Fu. Preparation and Gas-sensing Properties of Cu²⁺-doped ZnO Nanorods[J]. Journal of Inorganic Materials, 2012, 27(10): 1089-1094.

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Cu²⁺掺杂ZnO纳米棒的制备及气敏性能研究

Preparation and Gas-sensing Properties of Cu²⁺-doped ZnO Nanorods

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