Interactions between Low-Loading Pd Nanoparticles and Surface N-Functionalities and Their Effects on HCOOH Oxidation. Issue 12 (1st January 2015)

• Record Type: Journal Article
• Authors: Xin, Zhiling; Wang, Juan; Huang, Xing; Yao, Yuanying; Shao, Lidong
• Is Part Of: Journal of the Electrochemical Society. Volume 162:Issue 12(2015)
• Page Start: H898
• Page End: H902
• Publication Date: 2015-01-01
• Subjects: Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0691512jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Palladium (Pd)-based anode catalysts show greater activities than Pt catalysts for HCOOH oxidation. However, because of the ease of Pd oxidation, the electrocatalytic stability of Pd is not satisfactory. In the present study, 2.4-wt% Pd supported on N-functionalized carbon nanotubes (Pd/NCNTs) with high dispersion areas and narrow size distributions exhibited superior HCOOH-oxidation performance in comparison to Pd on charcoal (commercial Pd/C, 30-wt% Pd) and Pd on HNO3 -treated CNTs (Pd/OCNTs). Surface characterization revealed that the interactions between Pd nanoparticles (PdNPs) and surface N-functionalities optimized local structures of the PdNPs and participated in the HCOOH oxidation by influencing the electronic properties of the PdNPs.