Methanol oxidation in nanostructured platinum/cerium-phosphate thin films

• Published in: Current applied physics Vol. 11; no. 4; pp. S2 - S5
• Main Authors: Park, Jungjin, Oh, Yuhong, Park, Yejun, Nam, Seunghoon, Moon, Joonhee, Kang, Joonhyeon, Jung, Dae-Ryong, Byun, Sujin, Park, Byungwoo
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-07-2011
• Subjects: catalytic activity; Electrocatalyst; electrochemistry; electrodes; Metal-phosphate; methanol; Methanol oxidation; nanocomposites; nanocrystallites; oxidation; physics; Platinum; surface area; Metal-phosphate; Electrocatalyst; Platinum; Methanol oxidation
• ISSN: 1567-1739; 1878-1675
• DOI: 10.1016/j.cap.2011.07.005

Nanostructured Pt/CePO
4 thin-film electrodes consisting of the Pt nanocrystallites and amorphous CePO
4 were synthesized by sputtering, and the enhanced electrooxidation properties of methanol were investigated. Compared to a bare Pt electrocatalyst, the Pt/CePO
4 nanocomposites exhibited remarkably higher activities. The improved catalytic activities were observed even after normalization by the electrochemical surface area. This can be explained by both the bi-functional effect of CePO
4 and the modified electronic structure of Pt by the charge transfer from CePO
4 to Pt.