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A method for ultrasensitive detection of H2S by combining functionalized MOFs materials with g-c3n4

A sensitive detection, g-c3n4 technology, applied in the analysis of materials, material excitation analysis, material analysis through optical means, etc., can solve the problems of cumbersome operation steps, complicated pretreatment, time-consuming and labor-intensive, etc., to achieve sensitive fluorescence signals, Lower detection limit and higher detection efficiency

Active Publication Date: 2021-02-09
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although traditional hydrogen sulfide detection techniques, such as iodometric method, gas chromatography, colorimetric method and electrochemical analysis method, etc., are widely used, they have high requirements on the substrate of the sample, require complex pretreatment, and the operation steps are cumbersome , time-consuming and labor-intensive, in addition, due to H 2 Due to the high activity and easy diffusion of S, traditional methods are difficult to achieve lower detection limits, which limits its application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 (Detection of hydrogen sulfide in tap water)

[0019] Functionalized MOFs materials and g-C 3 N 4 Combined with H 2 The method for the ultrasensitive detection of S, comprises the following steps:

[0020] 1. Synthesis of PAC by solvothermal method: Weigh 3.0 g 4-formylbenzoic acid, measure 200 mL propionic acid and add it to 1.4 mL pyrrole, then heat the mixture under reflux for 1 h, and form a brown-purple precipitate after cooling, which is separated by filtration The precipitate was washed three times with dichloromethane and dried in vacuum for 6 h; at room temperature, weighed 0.060 g of aluminum chloride, 0.1 g of 4-carboxyphenyl porphyrin, and 0.072 g of hexadecyltrimethylammonium bromide were dissolved in 10 ml of water and stirred at room temperature for 10 min, placed in a 25 mL polytetrafluoroethylene-lined autoclave, left to react at 180 °C for 16 h, then slowly cooled to room temperature, centrifuged to collect purple nanocrystalline PA, and ...

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Abstract

The invention discloses a functionalized MOFs material and g-C 3 N 4 The combination of H 2 A method for the ultrasensitive detection of S. According to PAC material and g‑C 3 N 4 Sensitive fluorescent signal, utilizing the selectivity of PAC materials for hydrogen sulfide and g‑C 3 N 4 The sensitive response of the nanosheets to divalent copper ions enables the ultrasensitive detection of hydrogen sulfide. Compared with the single use of PAC materials or traditional methods, the sensing system effectively reduces the detection limit of hydrogen sulfide, and has simple operation and high detection efficiency.

Description

technical field [0001] The present invention relates to functionalized MOFs materials and g-C 3 N 4 Combined with H 2 The invention discloses an ultrasensitive detection method for S, belonging to the technical field of hydrogen sulfide detection. Background technique [0002] Hydrogen sulfide (H 2 S) As a biological signal transmitter, it has received great attention in recent years. It is the third important gas signaling molecule after nitric oxide and carbon monoxide. Endogenous H 2 S is mainly synthesized by biological enzymatic reactions, which are involved in many physiological processes, such as anti-oxidation, anti-inflammation and apoptosis. In addition, H 2 Abnormal concentrations of S are also associated with many pathological processes, such as Alzheimer's disease and Down's syndrome. In order to better understand the H 2 Contribution of S in these processes, H 2 The spatial and temporal variation of S levels in living cells and organisms is crucial. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/6428G01N2021/6443
Inventor 颜梅冯晓雯张晶于京华
Owner UNIV OF JINAN