ZnO/Ag heterogeneous structure nanoarrays: Photocatalytic synthesis and used as substrate for surface-enhanced Raman scattering detection
ZnO/Ag heterogeneous structure nanoarrays: Photocatalytic synthesis and used as substrate for surface-enhanced Raman scattering detection
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ZnO/Ag异质结构纳米阵列：光催化合成并用作表面增强拉曼散射检测的基质
DOI：
10.1016/j.jallcom.2010.10.125
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发表时间：
2011-02-03
影响因子：
6.2
通讯作者：
Zhu, Shiyu
中科院分区：
文献类型：
--
作者：
Hu, Haibo;Wang, Zhenghua;Zhu, Shiyu
采用光催化方法成功制备了具有异质结构的ZnO/Ag复合纳米阵列。通过可见光照射实现了Ag纳米粒子与ZnO纳米阵列的粘附，具有简单、经济、低碳的特点。由于其优异的性能，这些复合纳米阵列被用作表面增强拉曼散射（Sers）测量的基底。在ZnO/Ag复合纳米阵列的Ag纳米颗粒上观察到典型分析物如结晶紫（CV）的Sers信号，即使分析物的浓度低至1 × 10（-12）M。将该Sers底物进一步应用于检测苏丹红染料（SD II、SD IV），在苏丹红染料浓度为1 × 10（-12）M时也获得了较强的Sers信号。本工作为食品安全监测提供了一种制备Sers基底的新方法。(C)2010爱思唯尔有限公司版权所有。
ZnO/Ag composite nanoarrays with heterogeneous structure have been successfully prepared through a photocatalytic method. The adherence of Ag nanoparticles to ZnO nanoarrays was realized through the illumination of visible light, and hence the synthetic method is very simple, economical and low-carbon. Due to their exceptional properties, these composite nanoarrays were used as substrate in surface-enhanced Raman scattering (SERS) measurement. SERS signals of typical analytes such as crystal violet (CV) were observed on Ag nanoparticles from the ZnO/Ag composite nanoarrays, even though the concentration of the analyte was as low as 1 x 10(-12) M. The SERS substrate was further applied to detect Sudan dyes (SD II, SD IV), and strong SERS signals were obtained with Sudan dye concentration of 1 x 10(-12) M as well. This work provides a new method to prepare SERS substrates for food safety monitoring. (C) 2010 Elsevier B.V. All rights reserved.