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题名: In Situ Mass Spectrometric Monitoring of the Dynamic Electrochemical Process at the Electrode-Electrolyte Interface: a SIMS Approach
作者: Wang, Zhaoying1, 2; Zhang, Yanyan1, 2; Liu, Bingwen3; Wu, Kui1; Thevuthasan, Suntharampillai2; Baer, Donald R.2; Zhu, Zihua2; Yu, Xiao-Ying3; Wang, Fuyi1
刊名: ANALYTICAL CHEMISTRY
发表日期: 2017-01-03
卷: 89, 期:1, 页:960-965
收录类别: SCI
英文摘要: The in situ molecular characterization of reaction intermediates and products at electrode electrolyte interfaces is central to mechanistic studies of complex electrochemical processes, yet a great challenge. The coupling of electrochemistry (EC) and mass spectrometry (MS) has seen rapid development and found broad applicability in tackling challenges in analytical and bioanalytical chemistry. However, few truly in situ and real-time EC-MS studies have been reported at electrode electrolyte interfaces. An innovative EC-MS coupling method named in situ liquid secondary ion mass spectrometry (SIMS) was recently developed by combining SIMS with a vacuum compatible microfluidic electrochemical device. Using this novel capability, we report the first in situ elucidation of the electro-oxidation mechanism of a biologically significant organic compound, ascorbic acid (AA), at the electrode electrolyte interface. The short-lived radical intermediate was successfully captured, which had not been detected directly before. Moreover, we demonstrated the power of this new technique in real-time monitoring of the formation and dynamic evolution of electrical double layers at the electrode electrolyte interface. This work suggests further promising applications of in situ liquid SIMS in studying more complex chemical and biological events at the electrode electrolyte interface.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36317
Appears in Collections:活体分析化学实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, CAS Key Lab Analyt Chem Living Biosyst, Inst Chem, Beijing Natl Lab Mol Sci,Natl Ctr Mass Spectromet, Beijing 100190, Peoples R China
2.Pacific Northwest Natl Lab, Environm Mol Sci Lab, Richland, WA 99354 USA
3.Pacific Northwest Natl Lab, Earth & Biol Sci Directorate, Richland, WA 99354 USA
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