Galvanic replacement mediated growth of dendritic gold nanostructures with a three-fold symmetry and their applications to SERS

被引：28
作者：
Bai, Xiangtao [1 ]
Gao, Yanan [1 ]
Zheng, Liqiang [1 ]
机构：
[1] Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China
来源：
CRYSTENGCOMM | 2011年 / 13卷 / 10期
基金：
中国国家自然科学基金;
关键词：
NANOPARTICLES; AG; NANOCRYSTALS; SURFACTANT; HOLLOW; AU; TRANSFORMATION; ENHANCEMENT; FABRICATION; MORPHOLOGY;
D O I：
10.1039/c1ce05084b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Hierarchical, three-fold symmetrical, single-crystalline gold dendrites are synthesized on different metal substrates including Al, Zn, and Ni in a mixture of ethanol and water with the assistance of an ionic liquid. Structural characterizations suggest that the obtained gold dendrites are grown along the < 211 > directions. Such < 211 >-oriented gold dendrites are seldom reported. Both the metal substrate and the volume ratio of ethanol and water have demonstrated a significant effect on the dendrite morphologies. The obtained gold dendrites are found to yield large SERS enhancement factors for rhodamine 6G (R6G) and the morphology of the branches is a key for the enhancement.
引用
收藏
页码：3562 / 3568
页数：7
相关论文
共 56 条
[31]   Galvanic replacement mediated transformation of Ag nanospheres into dendritic Au-Ag nanostructures in the ionic liquid [BMIM][BF4] [J].
Pearson, Andrew ;
O'Mullane, Anthony P. ;
Bansal, Vipul ;
Bhargava, Suresh K. .
CHEMICAL COMMUNICATIONS, 2010, 46 (05) :731-733
[32]   Gold nanospikes formed through a simple electrochemical route with high electrocatalytic and surface enhanced Raman scattering activity [J].
Plowman, Blake ;
Ippolito, Samuel J. ;
Bansal, Vipul ;
Sabri, Ylias M. ;
O'Mullane, Anthony P. ;
Bhargava, Suresh K. .
CHEMICAL COMMUNICATIONS, 2009, (33) :5039-5041
[33]   Ionic liquid-assisted growth of single-crystalline dendritic gold nanostructures with a three-fold symmetry [J].
Qin, Yao ;
Song, Yin ;
Sun, Nijuan ;
Zhao, Nana ;
Li, Meixian ;
Qi, Limin .
CHEMISTRY OF MATERIALS, 2008, 20 (12) :3965-3972
[34]   Properties and Applications of Colloidal Nonspherical Noble Metal Nanoparticles [J].
Sau, Tapan K. ;
Rogach, Andrey L. ;
Jaeckel, Frank ;
Klar, Thomas A. ;
Feldmann, Jochen .
ADVANCED MATERIALS, 2010, 22 (16) :1805-1825
[35]   Nonspherical Noble Metal Nanoparticles: Colloid-Chemical Synthesis and Morphology Control [J].
Sau, Tapan K. ;
Rogach, Andrey L. .
ADVANCED MATERIALS, 2010, 22 (16) :1781-1804
[36]   Block copolymer mediated synthesis of gold quantum dots and novel gold-polypyrrole nanocomposites [J].
Selvan, ST ;
Hayakawa, T ;
Nogami, M ;
Möller, M .
JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (35) :7441-7448
[37]   Gold Nanocages: Synthesis, Properties, and Applications [J].
Skrabalak, Sara E. ;
Chen, Jingyi ;
Sun, Yugang ;
Lu, Xianmao ;
Au, Leslie ;
Cobley, Claire M. ;
Xia, Younan .
ACCOUNTS OF CHEMICAL RESEARCH, 2008, 41 (12) :1587-1595
[38]   Peptide Mesocrystals as Templates to Create an Au Surface with Stronger Surface-Enhanced Raman Spectroscopic Properties [J].
Su, Ying ;
He, Qiang ;
Yan, Xuehai ;
Fei, Jinbo ;
Cui, Yue ;
Li, Junbai .
CHEMISTRY-A EUROPEAN JOURNAL, 2011, 17 (12) :3370-3375
[39]   Novel preparation of snowflake-like dendritic nanostructures of Ag or Au at room temperature via a wet-chemical route [J].
Sun, Xuping ;
Hagner, Matthias .
LANGMUIR, 2007, 23 (18) :9147-9150
[40]   Mechanistic study on the replacement reaction between silver nanostructures and chloroauric acid in aqueous medium [J].
Sun, YG ;
Xia, YN .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (12) :3892-3901
123456