Facile synthesis of 3 D platinum dendrites with a clean surface as highly stable electrocatalysts
Zhou, Hui Ming
Xia, Bao Yu
Xie, Ming Shi
Date of Issue2014
School of Chemical and Biomedical Engineering
Pt nanostructures are intensively studied for many environmental and energy applications. Their synthesis normally involves capping agents/organic species or the assistance of templates/substrates, making the preparation process complicated. Therefore, it is still challenging to obtain Pt nanostructures with clean surface through a one-step surfactant-free method. We report herein the preparation of 3 D Pt nanodendrites with clean surface by a facile inorganic species assisted strategy. The possible specific adsorption of iron and nitrate ions would assist the growth of this 3 D Pt nanostructure. Thanks to its unique 3 D morphology composed of interconnected 1 D Pt nanorods/wires, the unsupported 3 D Pt nanodendrites exhibit higher stability and activity than commercial carbon black supported Pt nanoparticles and Pt black electrocatalysts for the oxygen reduction reaction and oxidation of small fuel molecules.
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.