Synthesis and optical properties of three-dimensional porous core-shell nanoarchitectures

被引：40

作者：

Qian, Li-Hua ^{[1
]}

Ding, Yi ^{[2
]}

Fujita, Takeshi ^{[1
]}

Chen, Ming-Wei ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Sch Chem & Chem Engn, Jinan 250100, Peoples R China

来源：

LANGMUIR | 2008年 / 24卷 / 09期

关键词：

D O I：

10.1021/la703621c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Three-dimensional porous core-shell nanostructures consisting of gold skeletons and silver shells were fabricated by controllable electroless plating. Optical properties of the 3D nanocomposite with a heterogeneous interface exhibit a significant shell-thickness dependence. The porous core-shell structure with an optimized shell thickness of similar to 3 - 5 nm exhibits a considerable improvement in surface-enhanced Raman scattering. This study has important implications in the functionalization of nanoporous metals by surface modification.

引用

页码：4426 / 4429

页数：4

共 35 条

[1]

ASHCROFT NW, 1976, SOLID STATE PHYS, P38

[2]

Bard A.J., 2001, Electrochemical Methods: Fundamentals and Applications, V2nd, P808

[3] Surface-enhanced Raman scattering of p-aminothiophenol on a Au(core)/Cu(shell) nanoparticle assembly [J].

Cao, LY ;

Diao, P ;

Tong, LM ;

Zhu, T ;

Liu, ZF .

CHEMPHYSCHEM, 2005, 6 (05) :913-918

[4] Epitaxial casting of nanotubular mesoporous platinum [J].

Ding, Y ;

Mathur, A ;

Chen, MW ;

Erlebacher, J .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (26) :4002-4006

[5] Nanoporous gold leaf: "Ancient technology"/advanced material [J].

Ding, Y ;

Kim, YJ ;

Erlebacher, J .

ADVANCED MATERIALS, 2004, 16 (21) :1897-+

[6] Metallic mesoporous nanocomposites for electrocatalysis [J].

Ding, Y ;

Chen, MW ;

Erlebacher, J .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (22) :6876-6877

[7] Nanoporous metals with controlled multimodal pore size distribution [J].

Ding, Y ;

Erlebacher, J .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (26) :7772-7773

[8] Preparation, structure, and optical properties of nanoporous gold thin films [J].

Dixon, Matthew C. ;

Daniel, Thomas A. ;

Hieda, Mitsunori ;

Smilgies, Detlef M. ;

Chan, Moses H. W. ;

Allara, David L. .

LANGMUIR, 2007, 23 (05) :2414-2422

[9] Ag-clad Au nanoparticles: Novel aggregation, optical, and surface-enhanced Raman scattering properties [J].

Freeman, RG ;

Hommer, MB ;

Grabar, KC ;

Jackson, MA ;

Natan, MJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (02) :718-724

[10]

FUJITA T, UNPUB

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