Electrooxidation of Methanol on PANI‐CeO2@Pt Catalysts. Issue 45 (5th December 2022)

• Record Type: Journal Article
• Authors: Xiang, Qun; Yan, Ruiwen; Gao, Guiqi; Wang, Shuang
• Is Part Of: ChemistrySelect. Volume 7:Issue 45(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-12-05
• Subjects: Methanol oxidation -- PANI-CeO2@Pt composites -- Polyaniline; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202203391
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Polyaniline (PANI) and Pt were synthesized in sequence by in situ electrochemical deposition on CeO2 surface to prepare PANI/CeO2 /Pt ternary composites (PANI‐CeO2 @Pt composites). The electrocatalytic activity of PANI‐CeO2 @Pt composite was measured to 226 mA⋅mg −1, which was 1.7‐, 2.3‐, 20‐flod as that of CeO2 @Pt, Pt/C, and PANI@Pt catalyst, respectively. The PANI‐CeO2 @Pt catalyst displayed noticeably the highest activity toward methanol oxidation after the 4000 s among the tested CeO2 @Pt, Pt/C, and PANI@Pt catalyst. In a CO‐stripping experiment, PANI‐CeO2 @Pt composites exhibited better CO tolerance. These results meant that highly dispersed Pt nanoparticles and the oxygen storage capacity of PANI‐CeO2 @Pt contributed to admirable catalytic activities for methanol oxidation reaction (MOR). Abstract : The PANI‐CeO2 @Pt composites with core‐shell structure have been successfully synthesized. Platinum nanoparticles were anchored on the surface of the PANI‐CeO2 materials. The lower potential and higher current density for MOR among the tested PANI@Pt, Pt/C, and CeO2 @Pt catalysts showed that PANI‐CeO2 @Pt catalyst displayed excellent catalytic performance. This work provided a novel approach to prepare anode catalytic materials and had wide application.