Effect of Pt/alumina catalyst preparation method on sensing performance of thermoelectric hydrogen sensor

被引：23

作者：

Choi, Y ^{[1
]}

Tajima, K ^{[1
]}

Shin, W ^{[1
]}

Izu, N ^{[1
]}

Matsubara, I ^{[1
]}

Murayama, N ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Nagoya, Aichi 4638560, Japan

来源：

JOURNAL OF MATERIALS SCIENCE | 2006年 / 41卷 / 08期

关键词：

D O I：

10.1007/s10853-006-7154-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We fabricated three different Pt/alumina catalysts for micro-thermoelectric hydrogen sensor (micro-THS). In the three Pt/alumina catalysts, two were prepared by impregnation of a commercial alumina with an aqueous solution of platinum (IV) chloride pentahydrate, and the third was prepared by impregnation of commercial alumina and nano-Pt with isobornyl acetate solution. To fabricate the micro-THS, the three Pt/alumina catalysts were integrated on thin membrane of the micro-THS, and its hydrogen sensing properties were investigated. The micro-THS with nano-Pt loaded alumina catalyst showed better sensing performance than those with Pt/alumina catalysts prepared by an aqueous solution of platinum (IV) chloride pentahydrate, because of effectively dispersed nano-Pt metal grain on the surface alumina grain observed by TEM. Its voltage signal was 15.7 mV for hydrogen concentration of 1% in dry air at catalyst temperature of 100 degrees C. (c) 2006 Springer Science + Business Media, Inc.

引用

页码：2333 / 2338

页数：6

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