Open AccessThree‐dimensional Pt catalyst on TiO 2 structures: Synthesis, characterization, and optimal morphology for efficient ethanol electro‐oxidation in acidic medium
Author(s) -
Mohammadi Naser,
Benabid Chahrazed,
Wang Haixia,
AbregoMartinez Juan Carlos,
Wang Youling,
Mohamedi Mohamed
Publication year - 2021
Publication title -
electrochemical science advances
Language(s) - English
Resource type - Journals
ISSN - 2698-5977
DOI - 10.1002/elsa.202000020
Subject(s) - catalysis , nanorod , ethanol , hydrothermal circulation , deposition (geology) , chemical engineering , materials science , morphology (biology) , nuclear chemistry , nanotechnology , chemistry , organic chemistry , paleontology , genetics , sediment , engineering , biology
Abstract By combining the hydrothermal and pulsed laser deposition methods, several three‐dimensional Pt catalysts on TiO 2 structures are prepared and used for the electro‐oxidation of ethanol in acidic medium. SEM reveals that TiO 2 prepared with 0.6 M of HCl consist of a mixture of nanowires and nanorods. For higher HCl concentrations, the TiO 2 are either in the form of vertically aligned bars or large branched crystals in the form of flowers‐like. Despite having the same loading of Pt, among the 3D Pt/TiO 2 /Ti structures, only those with TiO 2 prepared with 0.6 M of HCl shows a higher area specific activity and current mass activities exceptionally superior of about >50 times than those of unsupported Pt/Ti catalyst toward ethanol oxidation reaction, which suggests a promising application in ethanol fuel cells.