Preparation method of high-performance SERS active substrate ZIF-8/Ag-Au/Si-NPA

A technology of ZIF-8 and active substrate, which is applied in measuring devices, instruments, and material analysis through optical means, can solve the problems of slow response, high cost of SERS active substrate, low sensitivity, etc., and achieve the effect of low cost
CN110286116AInactive Publication Date: 2019-09-27HENAN POLYTECHNIC UNIV
7 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HENAN POLYTECHNIC UNIV
Publication Date
2019-09-27
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to the technical field of Raman detection, and discloses a preparation method of a high-performance SERS active substrate ZIF-8 / Ag-Au / Si-NPA, which is characterized by comprising the following steps: 1) preparing a nano porous silicon columnar array with favorable reducibility; (2) preparing and optimizing an Ag-Au / Si-NPA SERS active substrate; (3) preparing a ZIF-8 / Ag-Au / Si-NPA SERS active substrate; (4) testing the Raman enhancement performance of the ZIF-8 / Ag-Au / Si-NPA SERS active substrate. According to the preparation method of the high-performance SERS active substrate ZIF-8 / Ag-Au / Si-NPA, through the interaction of the pi-pi bonds formed by the ligand and a benzene ring of PCP, H atoms on PCP can form hydrogen-bond interaction with the ligand, and open metal sites and pi electrons on PCP form pi-complexing interaction, so that the selectivity and the adsorbability of the substrate to PCP are jointly improved. The method disclosed by the invention is low in cost, simple and easy to operate, capable of rapidly detecting the PCP in the liquid phase with high sensitivity, and good in application prospect.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of Raman detection, in particular to a preparation method of a high-performance SERS active substrate ZIF-8 / Ag-Au / Si-NPA. Background technique

[0002] Surface enhanced Raman scattering spectroscopy (SERS) is an ultrasensitive and non-destructive molecular detection technology, which is widely used in biomedicine, chemical sensing, food safety, environmental pollutant detection and other fields. Nowadays, it is still an important challenge for people to prepare SERS active substrates with high sensitivity, good reproducibility and high stability to realize rapid, direct and highly sensitive detection of environmental organic pollutants. As an organochlorine pesticide, pentachlorophenol (PCP) is widely used as a fungicide, insecticide, herbicide and wood preservative. The surface adsorption of traditional precious metal substrates is poor, and it is difficult to reach the local surface plasmon resonance regio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More