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通过交流阻抗谱研究尿素在0.5M硫酸中Pt(100)表面的电化学反应活性。

Electrochemical reactivity of urea at Pt(100) surface in 0.5 M HSO by AC impedance spectroscopy.

作者信息

Pierozynski Boguslaw

机构信息

Department of Chemistry, Faculty of Environmental Protection and Agriculture, University of Warmia and Mazury in Olsztyn, Plac Lodzki 4, 10-957 Olsztyn, Poland.

出版信息

J Solid State Electrochem. 2013 Mar;17(3):889-893. doi: 10.1007/s10008-012-1936-8. Epub 2012 Nov 17.

DOI:10.1007/s10008-012-1936-8
PMID:23450192
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3579810/
Abstract

The present paper reports an alternate current impedance spectroscopic study on adsorption of urea (U) at Pt(100) single-crystal surface, examined in 0.5 M HSO supporting electrolyte. The resulted information provided confirmation of the role of electrosorption of urea on the Pt(100) plane through evaluation of the associated charge transfer resistance and capacitance parameters. Obtained impedance results were compared to those previously recorded for guanidinium cation (G) under analogous experimental conditions, especially with respect to the so-called mechanism, as originally proposed for the G ion and bi(sulfate)/OH species, based on the voltammetric and in situ Fourier transform infrared spectroscopy results.

摘要

本文报道了在0.5M HSO支持电解质中对尿素（U）在Pt(100)单晶表面吸附的交流阻抗光谱研究。通过评估相关的电荷转移电阻和电容参数，所得信息证实了尿素在Pt(100)平面上电吸附的作用。将获得的阻抗结果与之前在类似实验条件下记录的胍阳离子（G）的结果进行了比较，特别是关于最初基于伏安法和原位傅里叶变换红外光谱结果为G离子和硫酸氢盐/OH物种提出的所谓机制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b53e/3579810/e31ae453b0a4/10008_2012_1936_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b53e/3579810/6a54c56fe48d/10008_2012_1936_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b53e/3579810/d123aee43f75/10008_2012_1936_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b53e/3579810/46dea3558761/10008_2012_1936_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b53e/3579810/fc22262322ef/10008_2012_1936_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b53e/3579810/e31ae453b0a4/10008_2012_1936_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b53e/3579810/6a54c56fe48d/10008_2012_1936_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b53e/3579810/d123aee43f75/10008_2012_1936_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b53e/3579810/46dea3558761/10008_2012_1936_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b53e/3579810/fc22262322ef/10008_2012_1936_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b53e/3579810/e31ae453b0a4/10008_2012_1936_Fig5_HTML.jpg

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本文引用的文献

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Phys Chem Chem Phys. 2010 Dec 14;12(46):15231-9. doi: 10.1039/c0cp00860e. Epub 2010 Nov 2.
2
Elucidation of the chemical nature of adsorbed species for Pt(111) in H2SO4 solutions by thermodynamic analysis.通过热力学分析阐明 Pt(111)在 H2SO4 溶液中吸附物种的化学性质。
Langmuir. 2010 Jul 20;26(14):12408-17. doi: 10.1021/la101112b.