Gas Sensing Properties of WO3-doped ZnO Nanoparticles Synthesized by Flame Spray Pyrolysis

被引：8

作者：

Siriwong, Chawarat ^{[1
]}

Wetchakun, Katcharin ^{[1
]}

Wisitsoraat, Anurat ^{[2
]}

Phanichphant, Sukon ^{[3
]}

机构：

[1] Chiang Mai Univ, Grad Sch, Nanosci & Nanotechnol Program, Chiang Mai 50000, Thailand

[2] Natl Elect & Comp Technol Ctr, Pathum Thani, Thailand

[3] Chiang Mai Univ, Fac Sci, Dept Chem, Chiang Mai 50000, Thailand

来源：

2009 IEEE SENSORS, VOLS 1-3 | 2009年

关键词：

THIN-FILM; PHOTODEGRADATION; SENSOR;

D O I：

10.1109/ICSENS.2009.5398220

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The flame-made (5/5) pure ZnO and WO3-doped ZnO nanoparticles containing 0.25, 0.50, and 0.75 mol% of WO3 were successfully synthesized by flame spray pyrolysis (FSP). These materials were studied for NO2, CO and H-2 gas sensing at different gas concentrations and operating temperatures ranging from 300-400 degrees C in dry air. The crystalline phase, morphology and size of the nanoparticles were characterized by XRD, BET, TEM, SEM and EDS in order to correlate physical properties with gas sensing performance. The gas-sensing results showed that WO3 doping significantly enhanced NO2 gas-sensing performance of ZnO nanoparticles. In addition, 0.5 mol% is found to be an optimal WO3 concentration which gives the highest sensitivity towards NO2.

引用

页码：118 / +

页数：2

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