The controlled synthesis of stable gold nanoparticles in quaternary ammonium ionic liquids by simple heating

被引：18

作者：

Huang, Wei ^{[1
,2
]}

Chen, Shimou ^{[1
]}

Liu, Yusheng ^{[1
]}

Fu, Haiying ^{[1
]}

Wu, Guozhong ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

NANOTECHNOLOGY | 2011年 / 22卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ONE-STEP SYNTHESIS; ROOM-TEMPERATURE; SILVER NANOPARTICLES; ASCORBIC-ACID; SIZE; SHAPE; NANOCRYSTALS; PARTICLES; NANOSTRUCTURES; CLUSTERS;

D O I：

10.1088/0957-4484/22/2/025602

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Stable gold nanoparticle (AuNP) colloids were synthesized in a class of quaternary ammonium-based room-temperature ionic liquids (QAILs), [Me3NC2H4OH](+)[ZnnCl2n+1](-) (n = 1 or 2), by heating in air at 135-145 degrees C. The QAIL was employed as a solvent, a reducing agent, and as a stabilizer. The size of the QAIL-AuNPs can be varied between 20 and 40 nm by changing the reaction temperature. A symproportionation reaction was employed to further decrease the size of the AuNPs by the addition of Au3+ ions. The surface covering of QAIL on the AuNPs had a significant impact on their surface plasmon resonance (SPR), which was red-shifted. The AuNPs synthesized by this simple and environmentally friendly reaction can be realized in several minutes and also exhibit high stability and good reproducibility, providing a new facile approach to metal nanoparticle preparation.

引用

页数：7

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