Synthesis and characterization of hierarchical porous gold materials

被引：145

作者：

Nyce, Gregory W. ^{[1
]}

Hayes, Joel R. ^{[1
]}

Hamza, Alex V. ^{[1
]}

Satcher, Joe H., Jr. ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA

来源：

CHEMISTRY OF MATERIALS | 2007年 / 19卷 / 03期

关键词：

D O I：

10.1021/cm062569q

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：

Synthesis and characterization of ultra low density gold monoliths with multimodal pore structure were discussed. The hierarchical porous gold materials were prepared by templated hollow silver/gold shells, which can be dealloyed. A core-shell approach was also adopted to prepare the hollow silver/gold shells as synthetic routes to prepare gold-coated silica and polystyrene were developed. The casting procedure was similar to slip-casting of ceramic and metal particles in which suspension of PS/Au particles were placed in a plaster of paris mold and allowed to settle. The results show that the sequence of metal deposition is remarkable as depositing gold on silver may result in competing Ag0/Au3+ galvanic and electroless deposition reduction reaction.

引用

页码：344 / 346

页数：3

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