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Synthesis, Characterization, and Electrochemical Activity of Laser Co‐deposited Pt–MnO 2 ‐Decorated Carbon Nanotube Nanocomposites
Author(s) -
Wang Youling,
Mohamedi Mohamed
Publication year - 2016
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201600477
Subject(s) - carbon nanotube , nanocomposite , electrocatalyst , catalysis , dehydrogenation , materials science , electrochemistry , chemical engineering , ternary operation , sulfuric acid , adsorption , inorganic chemistry , nanotechnology , chemistry , electrode , organic chemistry , metallurgy , computer science , engineering , programming language
A binderless ternary catalyst layer of carbon nanotubes (CNTs)/Pt–MnO 2 is presented. The Pt–MnO 2 nanocomposites with different surface morphology are grown directly for the first time onto CNTs at room temperature through the application of a cross‐beam pulsed laser deposition method, and their electroactivity in sulfuric acid and towards ethanol electrooxidation is examined. It is demonstrated that the electrochemical activity of the CNT/Pt–MnO 2 nanocomposites outperforms the benchmark CNT/Pt material. The superior catalytic performance of the Pt–MnO 2 electrocatalyst towards ethanol oxidation is attributed to the presence of MnO 2 , which promotes the electrocatalytic oxidation of ethanol by accelerating the dehydrogenation process, provides hydroxyl groups to oxidize the adsorbed intermediates (CO‐like species) on Pt surface and, by that, increases Pt utilization through the synergistic effect between Pt and MnO 2 .