Fabrication of silver nanoparticles decorated anodic aluminum oxide as the SERS substrate for the detection of pesticide thiram  

作　　者：谭恩忠 

机构地区：[1]Department of Mathematics and Physics,Beijing Institute of Petrochemical Technology

出　　处：《Optoelectronics Letters》2015年第4期241-243,共3页光电子快报（英文版）

基　　金：supported by the Scientific Research Project of Beijing Educational Committee(No.KM201410017005);the BIPT Breeding Project of Outstanding Young Teachers and Management Backbone 2013;the Beijing University Academic Research Training Project(No.2014J00032);the Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions(No.CIT&TCD201304099);BIPT-BPOAL-2013

摘　　要：An efficient surface-enhanced Raman scattering(SERS) substrate is developed based on silver nanoparticles decorated anodic aluminum oxide(Ag/AAO).The AAO templates were fabricated using a two-step anodization approach,and silver nanoparticles(Ag NPs) were obtained by thermal decomposition of Ag nitrate in AAO.The structure of Ag/AAO hybrid substrate is characterized by scanning electron microscopy(SEM).The results show that the as-prepared SERS substrates consist of high-density Ag NPs with sizes of tens of nanometers.The Ag NPs are adsorbed on the surface of AAO template in the form of network structure which is called "hot spot".The SERS enhancement ability of the nanostructure is verified using thiram as probing molecules.The limit of detection is as low as 1×10-9 mol/L.The results indicate that the as-prepared substrate possesses excellent SERS sensitivity,high stability and uniformity enhancement.

关 键 词：SERS silver anodic pesticide template adsorbed sizes nitrate verified probing 

分 类 号：TQ450.7[化学工程—农药化工] O657.37[理学—分析化学]