Synthesis, Structure and Growth Mech

Synthesis, Structure and Growth Mechanism of Size and Shape Tunable Au/Ag Bimetallic Nanoparticles

By simply adding ascorbic acid in advance of AgNO_3, the size and shape controllable Au/Ag bimetallic nanoparticles (NP) were prepared in the traditional Au growth solution free of seed at room temperature. The size distribution of NP is well uniform with ca. 10%-15% standard deviation in diameter. By changing CTAB concentration, the size and shape of NPs are tunable. After researching the surface-enhanced Raman spectroscopy (SERS) behavior of the prepared NPs, an enhancement factor varied from 4.3×10~4 to 1.1×10~5 was obtained for the NP centered at ca. (64±8) nm. Electrochemical cyclic voltammetric results revealed that the so formed nanoparticles were Au riched Au/Ag bimetallic NP, and this formation might be due to the disproportionation reaction of Au~+ prompted by Ag~+ and the under potential deposition process of Ag~+ on Au.

作 者： ZHENG, Pengcheng HU, Juan SHEN, Guoli JIANG, Jianhui YU, Ruqin LIU, Guokun   作者单位： State Key Laboratory of ChemlBiosensing and Chemometrics, Chemistry and Chemical Engineering College, Hunan University, Changsha, Hunan 410082, China  刊 名： 中国化学（英文版）  SCI 英文刊名： CHINESE JOURNAL OF CHEMISTRY  年，卷(期)： 2009 27(11)  分类号： O6  关键词： Au/Ag bimetallic nanoparticle   CTAB   surface-enhanced Raman spectroscopy (SERS)  

【Synthesis, Structure and Growth Mech】相关文章：

Synthesis, Structure and Properties of Poly(arylene imino)s04-28

Synthesis and Crystal Structure of a Tetranuclear Cu(Ⅰ) Complex with Vinyfidenebis(diphenylphosphine)04-27

Synthesis and Crystal Structure of Binuclear Copper(Ⅱ)Complex Containing (Dimethylaminomethyl)ferrocene04-27

Synthesis, Structure and Photoluminescence of a New Cadmium(Ⅱ) Complex Involving in situ Decarboxylation04-27

Synthesis and Structure of a Cerium Coordination Polymer Templated by Double-Keggin-anion04-27

Synthesis, Structure and Characterization of Manganese(Ⅱ) Coordination Polymer with Camphoric Acid and 1,10-Phenanthroli04-29

Synthesis, Crystal Structure, and Magnetic Properties of a Quasi-one-dimensional Compound Based on TCNQ04-27

Synthesis and Crystal Structure of 1,4-Bis(2-hydroxymethylphenyl)-1,4-dioxabutane04-27

Synthesis ,Structure and Biological Activities of Some Novel Anthranilic Acid Esters Containing N-Pyridyl-pyrazole04-29

Synthesis, Crystal Structure and DNA Interaction of N-(Benzimidazol-2-ylmethyl)-5-chlorosalicylideneimine04-27