Monolayer protected gold nanoparticles on ceria for an efficient CO oxidation catalyst

被引：47

作者：

Hickey, N.

Larochette, P. Arneodo

Gentilini, C.

Sordelli, L.

Olivi, L.

Polizzi, S.

Montini, T.

Fornasiero, P.

Pasquato, L.

Graziani, M.

机构：

[1] Univ Trieste, Dept Chem, CENMAT, I-34127 Trieste, Italy

[2] Univ Trieste, INSTM, I-34127 Trieste, Italy

[3] CNR, ISTM, I-20133 Milan, Italy

[4] Univ Venice, Dept Phys Chem, I-30172 Venice, Italy

来源：

CHEMISTRY OF MATERIALS | 2007年 / 19卷 / 04期

关键词：

WATER-GAS SHIFT; CARBON-MONOXIDE; AU;

D O I：

10.1021/cm062768+

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：

The use of monolayer protected AuNPs supported on ceria as precursors of active and thermally stable catalysts for hydrogen purification reactions was investigated. The composition of AuNP was determined by transmission electron microscopy (TEM) and thermogravimetric analysis. CeO2 has been prepared by precipitation from Ce(NO3)3 solution in NH4-OH and calcined to obtain a thermally stable support under the catalytic condition. The material has been impregnated with a solution of AuNP in ethyl acetate to obtain 1% metal loading. The X-ray diffraction pattern indicated a cubic fluorite structure for CeO2. Results highlight the great potential of the use of size-tunable performed AuNPs for the preparation of active catalysts.

引用

页码：650 / 651

页数：2

共 13 条

[11] DFT and in situ EXAFS investigation of gold/ceria-zirconia low-temperature water gas shift catalysts: Identification of the nature of the active form of gold [J].