Electrochemical Study on the Effect of Xanthine on Electrodeposition of Nanostructured Pt Thin Films and Pt(IV)-Xanthine Interaction

Abstract:

Nanostructured Pt thin films were electrodeposited in the presence of varying amounts of xanhtine. The electrodeposited Pt films exhibit different catalytic efficiency for methanol electro-oxidation. The anodic current of methanol decreases linearly with the increase of xanthine during the electrodeposition. The effect of xanthine on the catalytic efficiency of Pt films was studied by cyclic votlammetry (CV) and differential pulse voltammetry (DPV). The results of CV and DPV reveal the formation of a 2:1 complex between Pt(IV) and xanthine. The conditional stability constant of the complexes was determined to be 3.8×10⁶.

• Periodical: Advanced Materials Research (Volumes 418-420)
• Pages: 460-464
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.418-420.460
• Online since: December 2011
• Authors: Hong Cheng Pan, Jiang Tao Liu, Wei Hong Liu, Xue Peng Li, Guo Xi Liang
• Keywords: Cyclic Votlammetry, Differential Pulse Voltammetry, Pt, Thin Film, Xanthine

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