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题名: A fuel-cell-type sensor for detection of formaldehyde in aqueous solution
作者: Sun, Wei;  Sun, Gongquan;  Qin, Bing;  Xin, Qin
关键词: fuel cell ;  formaldehyde sensor ;  membrane electrode assembly (MEA) ;  direct formaldehyde fuel cell
刊名: SENSORS AND ACTUATORS B-CHEMICAL
发表日期: 2007-12-12
DOI: 10.1016/j.snb.2007.06.002
卷: 128, 期:1, 页:193-198
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Analytical ;  Electrochemistry ;  Instruments & Instrumentation
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Instruments & Instrumentation
英文摘要: A direct formaldehyde fuel cell using PtRu black as anode catalyst in membrane electrolyte assembly (MEA) has been fabricated for detecting formaldehyde in aqueous solution. The sensor shows high sensitivity for formaldehyde with good linearity over a wide concentration range from 0.002 to 1.25 mg ml-(1) and the response time is within tens of seconds. According to voltammetric results, the PtRu black electrode shows a comparable electro-oxidizing catalytic activity for formaldehyde to methanol and high stability in monitoring formaldehyde through long-term test. By analyzing the results at different temperatures, the electrochemical reaction determines the response of the sensor, which is comparable to that of mass transfer process. Moreover, the effect of load resistance on the performance of the sensor was investigated: a small resistance is preferred for detecting higher concentrations and a high resistance is preferred for detecting lower concentrations. Through water absorption, the fuel-cell-type sensor can also detect gaseous formaldehyde concentration. (c) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: PULSED AMPEROMETRIC DETECTION ;  SOLID POLYMER ELECTROLYTE ;  PT-RU CATALYSTS ;  DIRECT METHANOL ;  CARBON-MONOXIDE ;  HYDROGEN SENSOR ;  OXIDATION ;  ANODE ;  PLATINUM ;  DMFC
语种: 英语
WOS记录号: WOS:000251465000027
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140430
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China

Recommended Citation:
Sun, Wei,Sun, Gongquan,Qin, Bing,et al. A fuel-cell-type sensor for detection of formaldehyde in aqueous solution[J]. SENSORS AND ACTUATORS B-CHEMICAL,2007,128(1):193-198.
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