Ag/TiO2复合SERS衬底的制备及其在食品检测中的应用  

Preparation of Ag/TiO2 Composite SERS Substrate and its Application in Food Detection

作　　者：李耕 李晓芳 秦嘉泽 邹斌[1] 冯帅[1] 杨玉平[1] 彭洪尚[1] 张谷令[1] LI Geng;LI Xiaofang;QIN Jiaze;ZOU Bin;FENG Shuai;YANG Y uping;PENG Hongshang;ZHANG Guling(School of Science,Minzu University of China,Beijing 100081,China)

机构地区：[1]中央民族大学理学院,北京100081

出　　处：《中央民族大学学报（自然科学版）》2020年第2期64-70,87,共8页Journal of Minzu University of China(Natural Sciences Edition)

基　　金：国家自然科学基金(61775244)。

摘　　要：本研究通过研究分析SERS衬底材料合成方法,制备Ag/TiO2复合衬底。用材料对食品检测中几种常见有机污染物:孔雀石绿、罗丹明B(玫瑰红)、福美双(四甲基秋兰姆二硫化物)不同浓度的标准物溶液(浓度范围10-3 mol/L^10-10 mol/L)做SERS测试,详细分析讨论其增强性能和效果。同时尝试用衬底测试实际食品样品,简化常见的食品有机污染物测试方法。实验结果表明,本研究成功设计Ag/TiO2复合SERS衬底材料合成方法,获得SERS性能良好的复合衬底。制备方法简便,测试方案简单易行,实验具有一定的实际应用价值。Ag/TiO2 as the SERS substrate has been prepared in this research,and is used to detect several kinds of organic pollutant:MG(malachite green),Rhodamine B and Thiram,with their solution(10-3-10-10mol/L).By the analysis of detective result,enhancement of Ag/TiO 2 naonline can be found.This research also try to use the substrate to detect the food sample from local market,make the analysis method more easier.Finally,one kind of Ag/TiO2 has been made by simple synthetic route,and detected strong enhancement signal by easy analysis method.

关 键 词：表面增强拉曼(SERS) 材料合成 食品检测 

分 类 号：Q33I1[生物学—遗传学]