In‐situ STM studies of electrochemical underpotential deposition of Pb on Au(111)

M. P. Green, M. Richter, X. Xing, Daniel Alberto Scherson, K. J. Hanson, P. N. Ross, R. Carr, I. Lindau

研究成果: Article査読

18 被引用数 (Scopus)

抄録

A modified scanning tunnelling microscope (STM) has been used to observe in‐situ deposition and stripping of an electrochemical film. With STM tip and sample immersed in an acid electrolyte, single atomic steps on Au(111) have been imaged during the deposition and stripping of a monolayer‐thick, underpotential deposit (UPD) of Pb. Integration of the electrochemical current passed during the film deposition and evidence from the STM images themselves confirm monolayer coverage. Our images show enhanced film growth at step edges and defect sites. Observations of single plating and stripping cycles indicate that the Au substrate returns unaltered. Except for atomic resolution images of Au(111), which we have not yet achieved in an electrolyte, all types of Au surface features seen in air are reproduced under the electrolytic solution. The modifications made to our STM in order to perform in‐situ electrochemical experiments are described. 1988 Blackwell Science Ltd

本文言語English
ページ(範囲)823-829
ページ数7
ジャーナルJournal of Microscopy
152
3
DOI
出版ステータスPublished - 1988 1 1
外部発表はい

ASJC Scopus subject areas

  • 病理学および法医学
  • 組織学

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