Controllable synthesis of supported Cu-M (M =Pt, Pd, Ru, Rh) bimetal nanocatalysts and their catalytic performances

被引：43

作者：

Chen, Sha ^{[1
]}

Zhang, Hongye ^{[1
]}

Wu, Lingyan ^{[1
]}

Zhao, Yanfei ^{[1
]}

Huang, Changliang ^{[1
]}

Ge, Maofa ^{[1
]}

Liu, Zhimin ^{[1
]}

机构：

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

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 18期

基金：

中国国家自然科学基金;

关键词：

WATER-GAS SHIFT; REPLACEMENT REACTION; REDUCTION; NITRATE; NANOPARTICLES; HYDROGENATION; NI; OXIDATION; CLUSTERS; AU;

D O I：

10.1039/c2jm30543g

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：

Based on the galvanic replacement reaction between Cu nanoparticles and noble metal ions, a simple and efficient strategy was developed for the preparation of supported Cu-M (M = Pt, Pd, Ru, Rh) bimetallic nanoparticles under intense ultrasonication irradiation at ambient environment. A series of Cu-M/TiO2 bimetal catalysts with controllable composition, metal particle size less than 2 nm and narrow size distribution were obtained, and characterized by transmission electron microscopy (TEM), high resolution transmission electron microscope (HRTEM) with scanning TEM (STEM) mode, energy-dispersive X-ray spectrometers (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and ICP-AES analysis. It was demonstrated that most of the metal particles were present in the form of bimetallic state. The mechanism of this strategy was discussed. The resultant Cu-Pd/TiO2 was used to reduce nitrate at room temperature, and it exhibited extremely high activity.

引用

页码：9117 / 9122

页数：6

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