TRIMETHYLAMINE-SENSING MECHANISM OF TIO2-BASED SENSORS .2. EFFECTS OF CATALYTIC ACTIVITY OF TIO2-BASED SPECIMENS ON THEIR TRIMETHYLAMINE-SENSING PROPERTIES

被引:22
作者
TAKAO, Y
FUKUDA, K
SHIMIZU, Y
EGASHIRA, M
机构
[1] Department of Materials Science and Engineering, Faculty of Engineering, Nagasaki University, Nagasaki, 852
关键词
D O I
10.1016/0925-4005(93)87012-E
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The effects of metal additives on the catalytic activity of TiO2 for trimethylamine (TMA) oxidation have been investigated in relation to their TMA-sensing properties. The catalytic activity is more or less enhanced by adding a small amount of Ru, In or Au, the behaviour being in good agreement with the fact that these metals are effective in promoting the TMA sensitivity. In contrast, it is found that too great an enhancement in the catalytic activity induced by the addition of Pd, Pt or Rh results in deterioration of the sensitivity. Referring to the relationship between the catalytic activity and the TMA-sensing property, a possible mechanism is discussed.
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页码:235 / 239
页数:5
相关论文
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