Synthesis, characterization and gas sensing properties of rutile TiO2 doped with Pt obtained by sol-gel method

被引：0
|
作者：
Telipan, G. [1 ]
Ignat, M. [1 ]
Tablet, C. [2 ]
Parvulescu, V. [2 ]
机构：
[1] Res & Dev Natl Inst Elect Engn INCDIE ICPE CA, Bucharest 030138, Romania
[2] Inst Phys Chem, Bucharest 060021, Romania
来源：
JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS | 2008年 / 10卷 / 08期
关键词：
gas sensors; TiO(2)-Pt; semiconductor oxide; nanostructure; sol-gel method;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The gas sensitive oxide TiO(2) doped with Pt was obtained by sol gel polymeric method. The reagents used as precursors were the tetra-iso-propylortotitanate alcoxide, platinum chloride, surfactant butylamonium bromide and polyvinibutyral as polymer. The molar ratio used surfactant/alcoxide=0.1. The materials were obtained as films or powders. The obtained gels were dried at 373 K and heat treated in air between 473-873 K The films were obtained by dipping method and the support was CeO(2)-Ta(2)O(5) disc. The obtained materials was characterized by XRD, SEM, TEM electron microscopy and N(2) adsorption-desorption. The sensing properties of TiO(2)-Pt films were tested in NOx and CO(2). For the 10 mg/m(3) NO(x) and 5000 PPM CO(2) after 5 minutes gas exposure, the sensor voltages were 35 mV for NO(x) and 65 mV for CO(2).
引用
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页码：2138 / 2141
页数：4
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