When cubic nanoparticles get spherical: An Identical Location Transmission Electron Microscopy case study with Pd in alkaline media

Anicet Zadick (1, 2) , Laetitia Dubau (1, 2) , Anna Zalineeva (3) , Christophe Coutanceau (3) , Marian Chatenet (1, 2)

1 LEPMI - Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces
2 ICCF - Institut de Chimie de Clermont-Ferrand
3 IC2MP [Poitiers] - Institut de chimie des milieux et matériaux de Poitiers [UMR 7285]

Shape-controlled nanoparticles (NPs) are viewed as electrocatalysts of choice for fuel cell applications. However, to date very few studies focus on the persistence of the controlled shape upon operation. Herein, the degradation of cubic palladium NPs is studied in alkaline media using Identical Location Transmission Electron Microscopy (ILTEM) and electrochemical measurements; this work brings evidence that the cubic shape is rapidly destroyed in certain conditions. (C) 2014 Elsevier B.V. All rights reserved.

Mots clés: Shape-controlled nanoparticles; Cubic; Palladium; Identical Location Transmission Electron; Microscopy; Alkaline electrolyte; Degradation

Domaines: Catalyse

Anicet Zadick, Laetitia Dubau, Anna Zalineeva, Christophe Coutanceau, Marian Chatenet. When cubic nanoparticles get spherical: An Identical Location Transmission Electron Microscopy case study with Pd in alkaline media. Electrochemistry Communications, 2014, 48 pp.1-4 ⟨10.1016/j.elecom.2014.07.020⟩. ⟨hal-01325631⟩