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Analytical and Bioanalytical Chemistry

, Volume 411, Issue 13, pp 2781–2791 | Cite as

Plasmonic MoO2 nanospheres assembled on graphene oxide for highly sensitive SERS detection of organic pollutants

  • Jianli Chen
  • Kai Sun
  • Yi Zhang
  • Di Wu
  • Zhen Jin
  • Fazhi Xie
  • Xiaoli ZhaoEmail author
  • Xiufang WangEmail author
Paper in Forefront

Abstract

The molybdenum oxide and graphene oxide (MoO2/GO) nanocomposite has been fabricated via simple hydrothermal assisted synthesis using Mo and MoO3 as precursors. The MoO2 nanospheres with porous hollow structure are assembled onto GO nanosheets. Profiting from the plasmonic effects of MoO2 and synergistic effect of MoO2 and GO, this hybrid nanomaterial exhibits significantly enhanced surface enhanced Raman scattering (SERS) activity for organic pollutants. The detection limit for rhodamine 6G (R6G) is 1.0 × 10−9 M, and the maximum enhancement factor (EF) reaches up to 1.05 × 107, which is the best among the semiconductor-based SERS materials. For practical application, the MoO2/GO SERS substrates are also applied to detect Methylene blue (MB) in river water, and the detection limit (1.0 × 10−8 M) can be acquired. Pyrene is also chosen as probe molecule, and quantitative determination is achieved with detection limit of 1.0 × 10−7 M. These demonstrate the well feasibility for multi-molecule detection. Furthermore, the nanocomposite displays high stability, reproducible stability, and acid and alkali resistance.

Graphical abstract

Keywords

MoO2 Graphene oxide SERS Plasmonic effect Detection Organic pollutants 

Notes

Funding

This work was supported by the Anhui Provincial Natural Science Research Project (KJ2018A0512), the Initial Scientific Research Fund of Anhui Jianzhu University (2017QD14), and the Natural Science Foundation of China (41673131, 21777001).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Supplementary material

216_2019_1751_MOESM1_ESM.pdf (181 kb)
ESM 1 (PDF 180 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Materials and Chemical EngineeringAnhui Jianzhu UniversityHefeiChina
  2. 2.State Key Laboratory of Environmental Criteria and Risk AssessmentChinese Research Academy of Environmental SciencesBeijingChina

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