Pd Nanoparticles Supported on PDDA-Functionalized Ti4O7 as an Effective Catalyst for Formic Acid Electrooxidation

Abstract

Pd catalysts supported on carbon black and Ti4O7 were prepared and used as electrocatalysts for formic acid electrooxidation. The structure and morphology were characterized by XRD and TEM. CV results show that Pd/Ti4O7 possesses a higher catalytic activity than Pd/C. XPS analyzes suggest that the higher content of metallic Pd caused by Ti4O7 contributes to the better catalytic performance. Based on the good electrocatalytic performance of Pd/Ti4O7, Pd catalyst supported on PDDA-functionalized Ti4O7 was prepared and exhibited a better catalytic activity. The improvement results from the further increase of metallic Pd content due to the presence of PDDA. (C) 2014 The Electrochemical Society. All rights reserved.