• Photonics Research
  • Vol. 9, Issue 6, 1039 (2021)
Yang Li1、†, Haolin Chen2、†, Yanxian Guo1, Kangkang Wang1, Yue Zhang1, Peilin Lan1, Jinhao Guo1, Wen Zhang3, Huiqing Zhong1, Zhouyi Guo1、4, Zhengfei Zhuang1、5, and Zhiming Liu1、*
Author Affiliations
  • 1MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, China
  • 2Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518107, China
  • 3Department of Medical Biotechnology, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
  • 4e-mail: ann@scnu.edu.cn
  • 5e-mail: zhuangzf@scnu.edu.cn
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    DOI: 10.1364/PRJ.421415 Cite this Article Set citation alerts
    Yang Li, Haolin Chen, Yanxian Guo, Kangkang Wang, Yue Zhang, Peilin Lan, Jinhao Guo, Wen Zhang, Huiqing Zhong, Zhouyi Guo, Zhengfei Zhuang, Zhiming Liu. Lamellar hafnium ditelluride as an ultrasensitive surface-enhanced Raman scattering platform for label-free detection of uric acid[J]. Photonics Research, 2021, 9(6): 1039 Copy Citation Text show less

    Abstract

    The development of two-dimensional (2D) transition metal dichalcogenides has been in a rapid growth phase for the utilization in surface-enhanced Raman scattering (SERS) analysis. Here, we report a promising 2D transition metal tellurides (TMTs) material, hafnium ditelluride (HfTe2), as an ultrasensitive platform for Raman identification of trace molecules, which demonstrates extraordinary SERS activity in sensitivity, uniformity, and reproducibility. The highest Raman enhancement factor of 2.32×106 is attained for a rhodamine 6G molecule through the highly efficient charge transfer process at the interface between the HfTe2 layered structure and the adsorbed molecules. At the same time, we provide an effective route for large-scale preparation of SERS substrates in practical applications via a facile stripping strategy. Further application of the nanosheets for reliable, rapid, and label-free SERS fingerprint analysis of uric acid molecules, one of the biomarkers associated with gout disease, is performed, which indicates arresting SERS signals with the limits of detection as low as 0.1 mmol/L. The study based on this type of 2D SERS substrate not only reveals the feasibility of applying TMTs to SERS analysis, but also paves the way for nanodiagnostics, especially early marker detection.
    α=2.303Ad,

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    αhν=α0(hνEg)1/2,

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    EF=(ISERS/IRaman)(CRaman/CSERS),

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    Yang Li, Haolin Chen, Yanxian Guo, Kangkang Wang, Yue Zhang, Peilin Lan, Jinhao Guo, Wen Zhang, Huiqing Zhong, Zhouyi Guo, Zhengfei Zhuang, Zhiming Liu. Lamellar hafnium ditelluride as an ultrasensitive surface-enhanced Raman scattering platform for label-free detection of uric acid[J]. Photonics Research, 2021, 9(6): 1039
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