Copper Nanoparticles Grafted on a Silicon Wafer and Their Excellent Surface-Enhanced Raman Scattering

被引：100

作者：

Shao, Qi ^{[1
,2
]}

Que, Ronghui ^{[1
]}

Shao, Mingwang ^{[1
]}

Cheng, Liang ^{[1
]}

Lee, Shuit-Tong ^{[3
]}

机构：

[1] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China

[2] Univ Sci & Technol China, Dept Chem, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[3] City Univ Hong Kong, Ctr Super Diamond & Adv Films, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2012年 / 22卷 / 10期

基金：

中国国家自然科学基金;

关键词：

surface-enhanced Raman scattering (SERS); Cu nanoparticles; Si-H bonds; assembly; ELECTRODES; SUBSTRATE; PYRIDINE; AG;

D O I：

10.1002/adfm.201102943

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Copper nanoparticles grafted on a silicon wafer are fabricated by reducing copper ions with siliconhydrogen bonds and assembling them in situ on the Si wafer. The nanoparticles, with an average size of 20 nm, grow uniformly and densely on the Si wafer, and they are used as substrates for surface-enhanced Raman scattering. These substrates exhibit excellent enhancement in the low concentration detection (1 x 10-9 M) of rhodamine 6G with an enhancement factor (EF) of 2.29 x 107 and a relative standard deviation (RSD) of <20%. They are also employed to detect sudan-I dye with distinguished sensitivity and uniformity. The results are interesting and significant because Cu substrates are otherwise thought to be poor. These effects might provide new ways to think about surface-enhanced Raman scattering based on Cu substrates.

引用

页码：2067 / 2070

页数：4

共 18 条

[1] A STUDY OF THE WAVELENGTH AND POTENTIAL DEPENDENCE OF SURFACE-ENHANCED RAMAN-SCATTERING ON CU, AG, AND AU ELECTRODES [J].