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Wiping extraction-surface-enhanced Raman scattering film for on-site fast detection of explosive and its preparation method and use

A surface-enhanced Raman and explosives technology, applied in the field of explosives detection and analysis, can solve the problems of unstable SERS substrate detection signal, unsuitable for rapid detection, interference with SERS detection, etc., to simplify extraction and detection time and detection speed Fast and improve detection efficiency

Active Publication Date: 2016-05-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, paper-based SERS substrates are prepared by physical deposition, chemical reaction or printing with noble metal nanostructures, resulting in unstable detection signals of paper-based SERS substrates, and the Raman signal of paper itself will interfere with SERS detection. Therefore, Not suitable for on-site rapid detection

Method used

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  • Wiping extraction-surface-enhanced Raman scattering film for on-site fast detection of explosive and its preparation method and use
  • Wiping extraction-surface-enhanced Raman scattering film for on-site fast detection of explosive and its preparation method and use
  • Wiping extraction-surface-enhanced Raman scattering film for on-site fast detection of explosive and its preparation method and use

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The wipe extraction-surface-enhanced Raman spectroscopy film preparation method applied to the on-site rapid detection of explosives includes the following steps:

[0043] (1) Preparation of silver nanowire film: Take 1.5 mL of silver nanowire sol with a concentration of 18.4 mg / mL, filter it on filter paper or filter membrane, load the silver nanowire on the film, wash it with ethanol or water, and filter it on the filter paper. Or form a silver nanowire film with a thickness of 10 μm on the filter membrane;

[0044] (2) Preparation of modified silver nanowire membrane: soak the filter paper or filter membrane loaded with silver nanowire membrane prepared in step (1) in an aqueous solution of copper reagent (DDTC) with a concentration of 10mmol / L for 2h, Obtain modified silver nanowire film;

[0045](3) Cleaning the modified silver nanowire film prepared in step (2) with water or ethanol to obtain the final product. The SEM image of the prepared modified silver nanow...

Embodiment 2

[0060] The preparation method of the wiping extraction-surface-enhanced Raman spectroscopy film applied to rapid on-site detection of explosives described in Example 1, the difference is:

[0061] The modifier is mercaptoethylamine hydrochloride aqueous solution with a concentration of 10 mmol / L.

Embodiment 3

[0063] The preparation method of the wiping extraction-surface-enhanced Raman spectroscopy film applied to rapid on-site detection of explosives described in Example 1, the difference is:

[0064] The modifier is 3-mercapto-1-propylamine aqueous solution with a concentration of 15mmol / L.

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Abstract

The invention relates to a wiping extraction-surface-enhanced Raman scattering film for on-site fast detection of an explosive and its preparation method and use. The surface of a silver nanowire film is modified to form a modified silver nanowire film. The silver nanowire film and a detection method using the same utilize electrostatic interaction of the modified material and explosive characteristic ions to realize inorganic explosive characteristic ion detection and simulative inorganic explosive detection. The modified silver nanowire film can realize on-site rapid detection of nitro-containing organic explosives.

Description

technical field [0001] The invention relates to a wiping extraction-surface-enhanced Raman spectrum film applied to rapid detection of explosives on site, a preparation method and application thereof, and belongs to the technical field of detection and analysis of explosives. Background technique [0002] In recent years, terrorist bombings have occurred frequently around the world, and various forms of explosives and explosive devices have been used in terrorist attacks and criminal activities, causing a large number of casualties and property losses. There are many kinds of explosives and various camouflage methods, which are mainly divided into two categories: organic explosives and inorganic explosives. Among various explosives, the illegal use of inorganic explosives is gradually increasing. The main reasons are as follows: 1. The raw materials for manufacturing are mainly oxidants (chlorates, perchlorates, nitrates, sulfates and other inorganic salts) and Fuel substan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/658
Inventor 占金华史玉娥陈娟
Owner SHANDONG UNIV
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