IN-SITU POTENTIAL MODULATION DIFFERENCE DIFFRACTION STUDIES OF PLATINUM IN SULFURIC-ACID USING SYNCHROTRON X-RAY-RADIATION

被引：9
|
作者：
HERRON, ME
PLETCHER, D
ROBINSON, J
DOYLE, SE
ROBERTS, KJ
POTTER, RJ
WALSH, FC
机构：
[1] UNIV PORTSMOUTH,SCH CHEM PHY & RADIOG,PORTSMOUTH PO1 2DT,HANTS,ENGLAND
[2] UNIV SOUTHAMPTON,DEPT CHEM,SOUTHAMPTON SO17 1BJ,HANTS,ENGLAND
[3] UNIV WARWICK,DEPT PHYS,COVENTRY CV4 7AL,W MIDLANDS,ENGLAND
[4] UNIV STRATHCLYDE,DEPT PURE & APPL CHEM,GLASGOW G1 1XL,LANARK,SCOTLAND
[5] JOHNSON MATTHEY TECHNOL CTR,READING RG5 9NH,BERKS,ENGLAND
[6] SERC,DARESBURY LAB,WARRINGTON WA4 4AD,CHESHIRE,ENGLAND
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1995年 / 384卷 / 1-2期
关键词：
PLATINUM; SURFACE STRUCTURE; POTENTIAL MODULATION; X-RAY DIFFRACTION; SYNCHROTRON RADIATION;
D O I：
10.1016/0022-0728(94)03709-C
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In-situ potential-modulated X-ray diffraction (XRD) studies of platinized platinum electrodes in 1 M sulphuric acid were undertaken using synchrotron X-ray radiation. During these studies, the potential of the platinized electrodes was repeatedly stepped between values corresponding to the 'double-layer' region and oxide formation and potentials within the hydrogen adsorption region. Subtle differences between these sets of XRD patterns led to the conclusion that there was a slight shift in the position of each of the XRD peaks when the electrode potential was changed. These data are consistent with an increase in d-spacing at potentials in the oxide region and a decrease at potentials corresponding to the weakly adsorbed hydrogen region.
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收藏
页码：39 / 46
页数：8
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