Premium
Nanocomposite of Platinum Particles Embedded into Nanosheets of Polycarbazole for Methanol Oxidation
Author(s) -
Wu TziYi,
Tsai ChengJang,
Tseng LanYu,
Chen SinJhih,
Hsieh TarHwa,
Kuo ChungWen
Publication year - 2014
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201400084
Subject(s) - chronoamperometry , x ray photoelectron spectroscopy , chemistry , cyclic voltammetry , nanocomposite , scanning electron microscope , fourier transform infrared spectroscopy , transmission electron microscopy , platinum , methanol , catalysis , electrode , nuclear chemistry , electrochemistry , chemical engineering , nanotechnology , materials science , composite material , organic chemistry , engineering
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 disperse more 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 (5.01 mA cm −2 mg −1 ) at about 0.6 V (vs. Ag/AgCl).