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Title: X-ray Crystal Truncation Rod Studies of Surface Oxidation and Reduction on Pt(111)

Journal Article · · Journal of Physical Chemistry. C
 [1];  [1];  [2];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Safarik Univ., Kosice (Slovakia)

Here, we present X-ray crystal truncation rods measurements of Pt(111) surface under electrochemical conditions. Analyses of crystal truncation rods reveal that surface oxide formation buckles the top surface layer of platinum to two different heights at the potential (0.95 V vs RHE) below the so-called place-exchange potential. While the anti-Bragg intensity, sensitive to the top surface layer, drops in response to the anodic charge transfers, its responses to the cathodic charge transfers are significantly delayed. Implications to the surface oxidation and reduction behaviors are discussed.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1352615
Journal Information:
Journal of Physical Chemistry. C, Vol. 120, Issue 29; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

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Cited By (5)

Correlation of surface site formation to nanoisland growth in the electrochemical roughening of Pt(111) journal February 2018
Towards identifying the active sites on RuO 2 (110) in catalyzing oxygen evolution journal January 2017
Oscillations in the Electro-Oxidation of Thiourea on Platinum Electrode Studied by On-Line HPLC journal January 2019
Thermodynamics of the formation of surface PtO 2 stripes on Pt(111) in the absence of subsurface oxygen journal January 2020
Atomic-Scale Identification of the Electrochemical Roughening of Platinum journal November 2019

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