文献类型：期刊文献

英文题名：Rapid and Sensitive Detection of Malachite Green and Melamine with Silver Film over Nanospheres by Surface-Enhanced Raman Scattering

作者：Xiao, Gui-Na[1];Huang, Wen-Bin[2];Li, Zhuo-Hui[1]

机构：[1]Shanghai Normal Univ, Dept Phys, 100 Guilin Rd, Shanghai 200234, Peoples R China;[2]East China Univ Sci & Technol, Sch Sci, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：12

期号：4

起止页码：1169

外文期刊名：PLASMONICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000405528900028)】；

基金：This research was supported by the National Natural Science Foundation of China (No. 61405116), the Program of Shanghai Normal University (No. SK201438), and the Young Teacher Training Scheme of Shanghai Universities. We appreciate the support of Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shanghai Jiao Tong University.

语种：英文

外文关键词：Silver film over nanospheres; Surface plasmon resonance; Surface-enhanced Raman scattering; Malachite green; Melamine

摘要：Silver film over nanospheres (AgFON) have been prepared by depositing Ag thin film onto the self-assembled monolayer arrays of polystyrene nanospheres with vacuum magnetron sputtering method. The surface morphologies and optical properties have been characterized by using scanning electron microscope (SEM) and ultraviolet-visible near-infrared (UV-Vis-NIR) spectrophotometer. AgFON was used as substrate to detect the surface-enhanced Raman scattering (SERS) spectra of malachite green (MG) and melamine (MA). It was found that the AgFON substrate presented outstanding performance that the Raman enhancement factor was calculated to be as large as 9.76 x 10(12). The minimum limit for MG was down to 10(-8) mol/L with a good linear response range from 10(-4) to 10(-8) mol/L. In addition, this substrate showed excellent ability to recognize MA molecules with a detection limit of 0.1 mg/L. A good linearity (r = 0.9887) was obtained in the concentration range of 2-100 mg/L. Furthermore, the AgFON substrate exhibited good uniformity with a relative standard deviation (RSD) of 9.01 % and good reproducibility with RSD of 8.60 %.