Effect of Pb(II) on the morphology of platinum electrodeposited on highly oriented pyrolytic graphite

被引：25

作者：

Hill, AC ^{[1
]}

Patterson, RE ^{[1
]}

Sefton, JP ^{[1
]}

Columbia, MR ^{[1
]}

机构：

[1] Indiana Univ Purdue Univ, Dept Chem, Ft Wayne, IN 46805 USA

来源：

LANGMUIR | 1999年 / 15卷 / 11期

关键词：

D O I：

10.1021/la981291g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Platinum films electrodeposited from 10 mM H2PtCl6 have been probed using scanning electron microscopy (SEM) and ex situ scanning tunneling microscopy (STM) to examine morphological changes produced when Pb(II) is added to the deposition solution. Deposition was carried out potentiostatically at -250 and -1000 mV (vs Ag/AgCl) from solutions containing three different Pb(II) concentrations: 0, 0.05, and 0.4 mM. The presence of Pb(II) produced an extremely rough, spiky morphology on the nanometer scale and suppressed dendritic aggregation on the micrometer scale. These observations are interpreted in terms of Pb(II) counteracting enhanced surface diffusion of Pt atoms resulting from interaction between them and chloride ions at the solution/electrode interface.

引用

页码：4005 / 4010

页数：6

共 20 条

[1] THE USE OF ELECTROCHEMICAL SCANNING TUNNELING MICROSCOPY TO STUDY THE INITIAL-STAGES OF ELECTRODEPOSITION INSITU - OVERPOTENTIAL DEPOSITION OF PB AND PT ON HOPG
AINDOW, M
FARR, JPG
[J]. TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING, 1992, 70 : 171 - 176
[2] THE EVALUATION OF SURFACE-DIFFUSION COEFFICIENTS OF GOLD AND PLATINUM ATOMS AT ELECTROCHEMICAL INTERFACES FROM COMBINED STM-SEM IMAGING AND ELECTROCHEMICAL TECHNIQUES
ALONSO, C
SALVAREZZA, RC
VARA, JM
ARVIA, AJ
VAZQUEZ, L
BARTOLOME, A
BARO, AM
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1990, 137 (07) : 2161 - 2166
[3] Barabasi A-Ls, 1995, FRACTAL CONCEPTS SUR, DOI [10.1017/CBO9780511599798, DOI 10.1017/CBO9780511599798]
[4] AN EX-SITU STUDY OF ELECTRODEPOSITED LEAD ON PLATINUM(111) .2. VACUUM CHARACTERIZATION AND THERMAL-DESORPTION OF THE EMERSED ADLAYER
BORUP, RL
SAUER, DE
STUVE, EM
[J]. SURFACE SCIENCE, 1993, 293 (1-2) : 27 - 34
[5] PLATINIZED PLATINUM ELECTRODES
FELTHAM, AM
SPIRO, M
[J]. CHEMICAL REVIEWS, 1971, 71 (02) : 177 - &
[6] Diffusion controlled growth of metallic nanoclusters at selected surface sites
Francis, GM
Kuipers, L
Cleaver, JRA
Palmer, RE
[J]. JOURNAL OF APPLIED PHYSICS, 1996, 79 (06) : 2942 - 2947
[7] Deposition and growth of noble metal clusters on graphite
Francis, GM
Goldby, IM
Kuipers, L
vonIssendorff, B
Palmer, RE
[J]. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1996, (05): : 665 - 671
[8] Simultaneous electrodeposition and detection of platinum on silicon surfaces
Garrido, P
Gomez, E
Valles, E
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1998, 441 (1-2): : 147 - 151
[9] ELECTROCHEMICAL NUCLEATION .1. GENERAL-CONSIDERATIONS
GUNAWARDENA, G
HILLS, G
MONTENEGRO, I
SCHARIFKER, B
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1982, 138 (02): : 225 - 239
[10] Hills G. J., 1961, REFERENCE ELECTRODES

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