ZnO nanoparticles on MoS2 microflowers for ultrasensitive SERS detection of bisphenol A

Yingnan Quan; Jiacheng Yao; Shuo Yang; Lei Chen; Jia Li; Yang Liu; Jihui Lang; He Shen; Yaxin Wang; Yanyan Wang; Jinghai Yang; Ming Gao

doi:10.1007/s00604-019-3702-4

ZnO nanoparticles on MoS₂ microflowers for ultrasensitive SERS detection of bisphenol A

Mikrochim Acta. 2019 Aug 1;186(8):593. doi: 10.1007/s00604-019-3702-4.

Authors

Yingnan Quan^{1

2

3}, Jiacheng Yao^{1

2

3}, Shuo Yang⁴, Lei Chen^{1

2

3}, Jia Li³, Yang Liu^{1

2

3}, Jihui Lang^{1

2

3}, He Shen^{1

2

3}, Yaxin Wang^{1

2

3}, Yanyan Wang³, Jinghai Yang^{1

2

3}, Ming Gao^{5

6

7}

Affiliations

¹ Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, People's Republic of China.
² National Demonstration Centre for Experimental Physics Education, Jilin Normal University, Siping, 136000, People's Republic of China.
³ Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun, 130103, People's Republic of China.
⁴ Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, People's Republic of China.
⁵ Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, People's Republic of China. gaomingphy@126.com.
⁶ National Demonstration Centre for Experimental Physics Education, Jilin Normal University, Siping, 136000, People's Republic of China. gaomingphy@126.com.
⁷ Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun, 130103, People's Republic of China. gaomingphy@126.com.

PMID: 31372825
DOI: 10.1007/s00604-019-3702-4

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.

Keywords: Enhancement mechanism; MoS2 MFs; MoS2/ZnO MCs; SERS.

Publication types

Research Support, Non-U.S. Gov't

Abstract

Publication types

Grants and funding