An ethanol sensor based on cataluminescence on ZnO nanoparticles

被引：78

作者：

Tang, Huarong

Li, Yaming

Zheng, Chengbin

Ye, Jun

Hou, Xiandeng

Lv, Yi ^{[1
]}

机构：

[1] Sichuan Univ, Coll Chem, MOE, Key Lab Green Chem & Technol, Chengdu 610064, Peoples R China

[2] Sichuan Univ, Analyt & Testing Ctr, Chengdu 610064, Peoples R China

来源：

TALANTA | 2007年 / 72卷 / 04期

基金：

中国国家自然科学基金;

关键词：

cataluminescence; ZnO; nanomaterials; ethanol; sensor;

D O I：

10.1016/j.talanta.2007.01.035

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel gas sensor for the determination of ethanol was proposed in the present work, which was based on the generated cataluminescence emission from catalytic oxidation of ethanol on the surface of ZnO nanoparticles. The cataluminescence characteristics and the effect of different parameters on the signal intensity, such as morphology of synthesized ZnO, temperature and flow rate, were discussed in detail. Under the optimized experimental conditions, the calibration curve of cataluminescence intensity versus ethanol vapor concentration was linear in the range 1.0-100 ppm, and with a detection limit of 0.7 ppm (S/N = 3). Compared with the traditional electrical conductivity-based ZnO gas sensor for the determination of ethanol, the proposed ethanol sensor showed the advantages of high sensitivity, high selectivity and low working temperature. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1593 / 1597

页数：5

共 35 条

[1] CHEMILUMINESCENCE DURING CATALYSIS OF CARBON-MONOXIDE OXIDATION ON A THORIA SURFACE [J].