摘要
将多种金属氧化物掺入TiO2中,通过传统的陶瓷气敏传感器制备技术,制作了旁热式烧结型传感器,研究了这些传感器对有机挥发性气体(VOCs)的敏感特性。在不同浓度的甲醛、苯、丙酮和乙醇气氛中,测试了传感器的气敏特性。测试结果表明,添加In2O3、Cr2O3或SnO2能提高传感器对苯的灵敏度,添加In2O3或Cr2O3能提高传感器对丙酮的灵敏度,添加Cr2O3或SnO2的元件对甲醛气体较灵敏。此外,本文还研究了传感器陶瓷的烧结温度对传感器气敏特性的影响。
TiO2 sensors to volatile organic gases with the dopant of several metal-oxide were prepared by conventional ceramic sensor technology. The response of these gas sensors to formaldehyde, benzene, acetone and alcohol were studied. The results show that the In2O3, Cr2O3 or SnO2 doped sensors can improve the sensitivities of the sensors to volatile organic gases, and all of the sensors investigated are sensitive to benzene gas. The In2O3 or Cr2O3 doped sensors have the selectivity to acetone. And the Cr2O3 or SnO2 doped sensors possess satisfied selectivity to formaldehyde gas. In addition, the influence of the sintering temperature of the gas ceramics on the sensitivities of the sensors were also studied.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2005年第6期862-864,868,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(50172032)
关键词
TIO2
陶瓷气敏元件
有机挥发性气体(VOCs)
灵敏度
选择性
Acetone
Alcohols
Benzene
Doping (additives)
Environmental engineering
Formaldehyde
Sintering
Titanium dioxide
Volatile organic compounds
