| Literature DB >> 31372825 |
Yingnan Quan1,2,3, Jiacheng Yao1,2,3, Shuo Yang4, Lei Chen1,2,3, Jia Li3, Yang Liu1,2,3, Jihui Lang1,2,3, He Shen1,2,3, Yaxin Wang1,2,3, Yanyan Wang3, Jinghai Yang1,2,3, Ming Gao5,6,7.
Abstract
A heterojunction microcomposite was synthesized that consists of ZnO nanoparticles (ZnO NPs) anchored on MoS2 microflowers (MoS2 MFs). The material is shown to enable trace level detection of the pollutant bisphenol A (BPA). The microcomposite was characterized by XRD, XPS, SEM and TEM. In addition, coupling reaction between phenolic estrogens and Pauly's reagents was adopted to greatly enhance the SERS signal. BPA display a characteristic Raman band at 1592 cm-1 which can be used for its selective detection. The assay is highly sensitive and has a 1 nM detection limit which is the lowest among the reported semiconductor substrates. Graphical abstract MoS2/ZnO MCs SERS substrate broke through the application barrier of semiconductor composite materials in SERS substrates. It also sheds light on a deeper understanding of the charge-transfer based enhancement mechanism.Entities:
Keywords: Enhancement mechanism; MoS2 MFs; MoS2/ZnO MCs; SERS
Year: 2019 PMID： 31372825 DOI： 10.1007/s00604-019-3702-4
Source DB: PubMed Journal: Mikrochim Acta ISSN： 0026-3672 Impact factor: 5.833