Enhanced hydrogen selectivity of thermoelectric gas sensor by modification of platinum catalyst surface

被引：14

作者：

Sawaguchi, N ^{[1
]}

Shin, W

Izu, N

Matsubara, I

Murayama, N

机构：

[1] AIST, Res Inst Instrumentat Frontier, Moriyama Ku, Nagoya, Aichi 4638560, Japan

[2] AIST, Adv Mfg Res Inst, Moriyama Ku, Nagoya, Aichi 4638560, Japan

来源：

MATERIALS LETTERS | 2006年 / 60卷 / 03期

关键词：

thermoelectric gas sensor; hexamethyldisiloxane; hydrogen selectivity;

D O I：

10.1016/j.matlet.2004.05.092

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The gas sensing properties of a thermoelectric hydrogen sensor for hydrogen and other flammable gases, methane, ethanol and methanol, were investigated. The signal of the sensor device is the thermoelectric power produced by heat of oxidation of hydrogen on the Pt catalyst oil the surface of the thermoelectric thin film of the sensor device. Hexamethyldisiloxane (HMDS) exposure at 1000 ppm and 100 degrees C decreased the catalytic activity of the thermoelectric gas sensor for hydrogen. However, after the following heat treatment at 200 degrees C, 2 h, the gas response of the sensor device was recovered and the hydrogen selectivity against methanol gas was enhanced simultaneously. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：313 / 316

页数：4

共 12 条

[1] Adsorption and decomposition of hexamethyldisiloxane on platinum: An XPS, UPS and TDS study [J].

Colin, L ;

Cassuto, A ;

Ehrhardt, JJ ;

RuizLopez, MF ;

Jamois, D .

APPLIED SURFACE SCIENCE, 1996, 99 (03) :245-254

[2] Poisoning of platinum surfaces by hexamethyldisiloxane (HMDS): application to catalytic methane sensors [J].

Ehrhardt, JJ ;

Colin, L ;

Jamois, D .

SENSORS AND ACTUATORS B-CHEMICAL, 1997, 40 (2-3) :117-124

[3]

Fukuii K., 1985, Instrumentation, V28, P56

[4]

Ihokura K., 1994, STANNIC OXIDE GAS SE

[5] H2 selective gas sensor based on SnO2 [J].

Katsuki, A ;

Fukui, K .

SENSORS AND ACTUATORS B-CHEMICAL, 1998, 52 (1-2) :30-37

[6] Nano-structured thin-film Pt catalyst for thermoelectric hydrogen gas sensor [J].

Matsumiya, M ;

Shin, W ;

Izu, N ;

Murayama, N .

SENSORS AND ACTUATORS B-CHEMICAL, 2003, 93 (1-3) :309-315

[7] Poisoning of platinum thin film catalyst by hexamethyldisiloxane (HMDS) for thermoelectric hydrogen gas sensor [J].

Matsumiya, M ;

Shin, WS ;

Qiu, FB ;

Izu, N ;

Matsubara, I ;

Murayama, N .

SENSORS AND ACTUATORS B-CHEMICAL, 2003, 96 (03) :516-522

[8] Hydrogen sensor based on RF-sputtered thermoelectric SiGe film [J].

Qiu, FB ;

Shin, W ;

Matsumiya, M ;

Izu, N ;

Murayama, N .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2003, 42 (4A) :1563-1567

[9] Hydrogen-selective thermoelectric gas sensor [J].

Shin, W ;

Matsumiya, M ;

Izu, N ;

Murayama, N .

SENSORS AND ACTUATORS B-CHEMICAL, 2003, 93 (1-3) :304-308

[10] Thermoelectric thick-film hydrogen gas sensor operating at room temperature [J].

Shin, W ;

Imai, K ;

Izu, N ;

Murayama, N .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 2001, 40 (11B) :L1232-L1234

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