Double-color nanocomposite as well as paper sensor for visually detecting trinitrotoluene based on composite and manufacturing method thereof

A nanocomposite and sensor technology, applied in material excitation analysis, fluorescence/phosphorescence, etc., to achieve the effect of omitting the pretreatment process, good selectivity and remarkable effect
CN103525413BInactive Publication Date: 2015-04-29HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Publication Date
2015-04-29
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 discloses a two-color nanocomposite with two-color ratio fluorescence, and also discloses a fluorescent paper sensor for visual analysis and detection of trace amounts of explosive TNT (TNT) residues on the surface of different objects and a preparation method thereof. The paper sensor prepared by the invention is easy to carry and operate, and is convenient for real-time online on-site visual detection of explosive TNT, and can visually detect traces of TNT residues with a lower limit as low as 11.35 nanograms per square millimeter. The method of the present invention can avoid the use of large-scale instruments to a certain extent, and only needs a hand-held ultraviolet lamp to carry out visual detection. The operation is simple, convenient and fast, with high sensitivity and remarkable effect; The interference of substances, good selectivity, but also omitted the pretreatment process. The prepared paper sensor can detect explosive TNT in real-time and on-site visualization.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a fluorescent chemical sensor and a preparation method thereof, in particular to a fluorescent paper sensor for visual analysis and detection of trace amounts of explosive TNT (TNT) residues on the surface of different objects and a preparation method thereof. A sensor for the visual detection of TNT by the two-color ratio fluorescence signal of blue-light graphene oxide and red-light dream-doped nanocrystals and its preparation method. Background technique

[0002] Explosives endanger national security and social stability, especially terrorist attacks using explosives TNT (TNT) occur frequently around the world, posing a great threat to the safety of civilian life and property. Therefore, how to detect hidden explosives has become an urgent task faced by relevant departments of various countries. Due to the variety of concealment methods and strategies, it has brought a lot of inconvenience to the detection work. In ...

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