One-pot solvothermal method to synthesize platinum/W18O49 ultrafine nanowires and their catalytic performance

被引：27

作者：

Zhang, Hongye ^{[1
]}

Huang, Changliang ^{[1
]}

Tao, Ranting ^{[1
]}

Zhao, Yanfei ^{[1
]}

Chen, Sha ^{[1
]}

Sun, Zhenyu ^{[1
]}

Liu, Zhimin ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 08期

基金：

中国国家自然科学基金;

关键词：

TUNGSTEN-OXIDE NANOWIRES; P-CHLORONITROBENZENE; SELECTIVE HYDROGENATION; POLYOL SYNTHESIS; NANOPARTICLES; SUPPORT; ALCOHOL; GOLD; OXIDATION; NANORODS;

D O I：

10.1039/c1jm15726d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A simple solvothermal method was developed to prepare platinum/W18O49 ultrafine nanowires (<5 nm in diameter) through hydrolysis of WCl6 in ethanol-water solution in the presence of poly(N-vinyl-2-pyrrolidone) capping with Pt nanoparticles, and a series of Pt/W18O49 nanocomposites were obtained. These Pt/W18O49 composites were characterized by transmission electron microscopy, X-ray diffraction, Fourier-transform infrared spectra, X-ray photoelectron spectroscopy, and photoluminescence spectroscopy. It was demonstrated that PVP not only directed the formation of W18O49 nanowires, but also transferred the metal particles onto the oxide support without any size change. Due to the relatively strong interaction between Pt nanoparticles and the W18O49 nanowires, the as-prepared Pt/W18O49 composites exhibited blue shift in UV emission compared to the W18O49 nanowires, and displayed high activity and excellent stability for hydrogenation of p-chloronitrobenzene to p-chloroaniline with a selectivity of 99.7%.

引用

页码：3354 / 3359

页数：6

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