Chemical vapor infiltration method for deposition of gold nanoparticles on porous alumina supports

被引：34
作者：
Semyannikov, P. P. [1 ]
Moroz, B. L.
Trubin, S. V.
Zharkova, G. I.
Pyryaev, P. A.
Smirnov, M. Yu.
Bukhtiyarov, V. I.
机构：
[1] Russian Acad Sci, Siberian Div, AV Nikolaev Inst Inorgan Chem, Novosibirsk, Russia
[2] Russian Acad Sci, Siberian Div, GK Boreskov Inst Catalysis, Novosibirsk, Russia
来源：
JOURNAL OF STRUCTURAL CHEMISTRY | 2006年 / 47卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
chelate derivatives of dimethylgold(III); volatility; chemical vapor infiltration; Au/gamma-Al2O3; catalysts; electron microscopy; X-ray photoelectron spectroscopy; CO oxidation;
D O I：
10.1007/s10947-006-0323-7
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Knudsen's effusion method with mass spectral analysis of the composition of the gas phase was used to measure the temperature dependence of the saturated vapor of several (CH3)(2)AuL chelate complexes and to determine the thermodynamic parameters of their sublimation. Based on the results of this study, conditions for chemical vapor deposition of gold using dimethylgold(III) chelates were chosen. Gold nanoparticles were synthesized by chemical vapor deposition (infiltration) of (CH3)(2)Au(acac) on porous granules of gamma-Al2O3 with subsequent calcination in air at 325 degrees C. Particle size and the chemical state of gold in Au/gamma-Al2O3 systems were evaluated by transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). A vapor infiltration procedure is suggested to prepare metallic gold particles <= 5 nm in diameter from Au/gamma-Al2O3. It is shown that Au/gamma-Al2O3 systems obtained by chemical vapor infiltration and containing small gold crystallites possess high catalytic activity in CO oxidation reactions at 40 degrees C.
引用
收藏
页码：458 / 464
页数：7
相关论文
共 9 条
[1]  
Briggs D., 1983, Practical Surface Analysis by Auger and X-ray Photoelectron Spectroscopy
[2]  
Bukhtiyarov VI, 2001, USP KHIM+, V70, P167
[3]   Performance of Au/TiO2 catalyst under ambient conditions [J].
Daté, M ;
Ichihashi, Y ;
Yamashita, T ;
Chiorino, A ;
Boccuzzi, F ;
Haruta, A .
CATALYSIS TODAY, 2002, 72 (1-2) :89-94
[4]  
Haruta M, 2003, CATALYSIS AND ELECTROCATALYSIS AT NANOPARTICLE SURFACES, P645
[5]   Copper, silver and gold in catalysis - Preface [J].
Haruta, M ;
Souma, Y .
CATALYSIS TODAY, 1997, 36 (01) :1-1
[6]  
RAZUVAEV GA, 1981, DEPOSITION FILMS COA
[7]  
SEMYANNIKOV PP, 1995, J PHYS IV, V5, P5
[8]  
Stiles A. B., 1987, CATALYST SUPPORTS SU
[9]  
ZHARKOVA GI, 1980, KOORDINATS KHIM, V6, P720
1