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Probing the Surface of Noble Metals Electrochemically by Underpotential Deposition of Transition Metals

IC2MP, UMR 7285 CNRS, Université de Poitiers, 4 rue Michel Brunet B27 TSA 51106, 86073 Poitiers CEDEX 09, France
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Surfaces 2019, 2(2), 257-276; https://doi.org/10.3390/surfaces2020020
Received: 15 February 2019 / Revised: 29 March 2019 / Accepted: 2 April 2019 / Published: 9 April 2019
(This article belongs to the Special Issue Electrochemical Surface Science: Basics and Applications)
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Abstract

The advances in material science have led to the development of novel and various materials as nanoparticles or thin films. Underpotential deposition (upd) of transition metals appears to be a very sensitive method for probing the surfaces of noble metals, which is a parameter that has an important effect on the activity in heterogeneous catalysis. Underpotential deposition as a surface characterization tool permits researchers to precisely determine the crystallographic orientations of nanoparticles or the real surface area of various surfaces. Among all the work dealing with upd, this review focuses specifically on the main upd systems used to probe surfaces of noble metals in electrocatalysis, from poly‒ and single-crystalline surfaces to nanoparticles. Cuupd is reported as a tool to determine the active surface area of gold‒ and platinum‒based bimetallic electrode materials. Pbupd is the most used system to assess the crystallographic orientations on nanoparticles’ surface. In the case of platinum, Bi and Ge adsorptions are singled out for probing (1 1 1) and (1 0 0) facets, respectively. View Full-Text
Keywords: underpotential deposition (upd); Au; Pt; Pd; nanoparticles; cyclic voltammetry; electrocatalysis underpotential deposition (upd); Au; Pt; Pd; nanoparticles; cyclic voltammetry; electrocatalysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Mayet, N.; Servat, K.; Kokoh, K.B.; Napporn, T.W. Probing the Surface of Noble Metals Electrochemically by Underpotential Deposition of Transition Metals. Surfaces 2019, 2, 257-276.

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