文献类型：期刊文献

英文题名：Reliable on-site characterization of aromatic compounds adsorbed on porous particles with SERS in a dynamic adsorption-hydrocyclone separation process

作者：Wang, Fei[1];Qiu, Yang[1];Fu, Peng-Bo[1];Wang, Hua-Lin[1];Long, Yi-Tao[2,3]

机构：[1]E China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2014

卷号：6

期号：23

起止页码：9348

外文期刊名：ANALYTICAL METHODS

收录：;EI(收录号：20144600179854);WOS:【SCI-EXPANDED(收录号:WOS:000344964700021)】；

基金：This research was supported by the sponsorship of National Science Foundation for Distinguished Young Scholars of China (Grant no. 51125032).

语种：英文

外文关键词：Porous materials - Aluminum oxide - Spectrometers - Aromatization - Silver nanoparticles - Alumina - Raman spectroscopy

摘要：A novel method for reliable on-site characterization of aromatic compounds adsorbed on porous particles with surface enhanced Raman spectroscopy (SERS) in a dynamic adsorption-hydrocyclone separation process (DAHS) was introduced. Aromatic compounds found in printing and dyeing wastewater were adsorbed on functionalized porous alumina particles (FPAPs). The SERS-active FPAPs were prepared by decorating and growing silver nanoparticles (Ag NPs, similar to 70 nm diameter) on the surface of porous alumina particles (PAPs). Samples were then characterized with a portable Raman spectrometer. SERS offers quantitative analyses of the pollutants adsorbed on the surface of FPAPs directly and the quantity of benzidine adsorbed on porous particles was 20.5 mg kg(-1). It shows that the SERS-DAHS technique could be readily applied to the quantitative characterization of aromatic compounds adsorbed on SERS-active FPAPs. Furthermore, both qualitative and quantitative detection of aromatic compounds in wastewater produced on-site were readily accomplished using the SERS-DAHS method and its analytical ability compares well with GC-MS and the detection results deviating between these two techniques was less than 10%. The results demonstrate that the SERS-DAHS method is straightforward, rapid, and preferable for the real-time detection and quantitative characterization of aromatic compounds/pollutants adsorbed on porous materials.