Nanocomposite of Platinum Particles Embedded into Nanosheets of Polycarbazole for Methanol Oxidation

作者：Wu Tzi Yi; Tsai Cheng Jang; Tseng Lan Yu; Chen Sin Jhih; Hsieh Tar Hwa; Kuo Chung Wen^*

来源：Journal of the Chinese Chemical Society, 2014, 61(8): 860-866.

DOI：10.1002/jccs.201400084

• Nanocomposite
• Polycarbazole
• Cyclic voltammetry
• Methanol oxidation

Nanoparticles of Pt were successfully electrodeposited onto polycarbazole (PCz) film on a stainless steel (SS-PCz-Pt) by chronocoulometry (0.2 C). For comparative purposes, Pt particles were deposited into stainless steel (SS-Pt) under the same condition. Fourier transform infrared spectroscopy (FT-IR) results confirmed PCz exists in the SS-PCz-Pt composite electrode. X-ray photoelectron spectroscopy (XPS) results indicated that PCz of SS-PCz can interact easily with Pt particles. The crystalline behavior and morphology of SS-PCz-Pt and SS-Pt were determined by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), and Transmission Electron Microscopy (TEM). The TEM results indicated that Pt particles dispersemore uniformly into the nanosheets of polycarbazole than those of SS film. Catalytic activity and stability for the oxidation of methanol were studied by using cyclic voltammetry and chronoamperometry. A high catalytic current for methanol oxidation (8.04 mA cm(-2) mg(-1)) was found for the SS-PCz-Pt electrode in comparison to SS-Pt electrode (5.01mA cm(-2) mg(-1)) at about 0.6 V(vs. Ag/AgCl).

• 出版日期2014-8