Paramagnetic centers in gas-sensing materials based on TiO2-MoO3 composites

被引：7

作者：

Boboriko, N. E. ^{[1
]}

Lapchuk, N. M. ^{[1
]}

Azarko, I. I. ^{[1
]}

Mychko, D. I. ^{[1
]}

机构：

[1] Belarusian State Univ, Minsk 220030, BELARUS

来源：

JOURNAL OF APPLIED SPECTROSCOPY | 2013年 / 80卷 / 02期

关键词：

titanium dioxide; molybdenum trioxide; EPR spectroscopy;

D O I：

10.1007/s10812-013-9746-z

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The nature and character of changes during thermal annealing of paramagnetic centers in TiO2-MoO3 gas-sensing materials with 1-10 mol% MoO3 content were studied. The results suggested that certain processes occurred in the sensor during thermocatalytic detection of combustible gases. It was found that an increase of the sensor output signal in the temperature range 200-350A degrees C was due to active participation of MoO3 lattice oxygen in catalytic hydrogen oxidation processes.

引用

页码：205 / 209

页数：5

共 7 条

[1] An EPR study of thermally and photochemically generated oxygen radicals on hydrated and dehydrated titania surfaces [J].