期刊
MICROCHIMICA ACTA
卷 186, 期 8, 页码 -出版社
SPRINGER WIEN
DOI: 10.1007/s00604-019-3702-4
关键词
MoS2; ZnO MCs; MoS2 MFs; SERS; Enhancement mechanism
资金
- National Natural Science Foundation of China [61675090, 61575080, 61705020, 21676115]
- National Youth Program Foundation of China [61405072, 21546013, 61704065, 61705078, 51609100]
- Program for the development of Science and Technology Jilin province [20160101287JC, 20150519024JH]
- Technology of Education Department of Jilin Province [JJKH20170374KJ]
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 1592cm(-1) which can be used for its selective detection. The assay is highly sensitive and has a 1nM detection limit which is the lowest among the reported semiconductor substrates.
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