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Preparation of cd-mof and its role in fluorescent recognition of DMSO and capture of co 2 application in

A technology of CO2 and cadmium salts, which is applied in the direction of luminescent materials, chemical instruments and methods, and the separation of dispersed particles, can solve the problems of low selectivity of DMSO, expensive instruments, cumbersome operation, etc., and achieve strong fluorescence enhancement, mild conditions, and good The effect of thermal stability

Active Publication Date: 2021-03-30
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a preparation of Cd-MOF and its application in fluorescence recognition of DMSO, aiming to overcome the time-consuming, expensive instruments, cumbersome operation and selection of DMSO in the existing methods for detecting DMSO. inferiority

Method used

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  • Preparation of cd-mof and its role in fluorescent recognition of DMSO and capture of co <sub>2</sub> application in
  • Preparation of cd-mof and its role in fluorescent recognition of DMSO and capture of co <sub>2</sub> application in
  • Preparation of cd-mof and its role in fluorescent recognition of DMSO and capture of co <sub>2</sub> application in

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Embodiment 1

[0038] Embodiment 1 The preparation of a kind of Cd-MOF comprises the following steps:

[0039] Weigh ligand H 2 Put BTTA 15mg in a 20mL vial with a polytetrafluoroethylene cap, then add 2mL DMF to it, then add 50μL of 1mol / L cadmium nitrate solution to it, then tighten the cap of the vial and place it in an oven at 85°C for reaction Three days later, the vial was taken out and naturally cooled to room temperature to obtain a colorless block crystal, which is Cd-MOF.

[0040] The chemical formula of the prepared Cd-MOF is [Cd 2 (H 2 BTTA)(BTTA)(DMF) 2 ].

Embodiment 2

[0041] Example 2 Application of Cd-MOF in Fluorescence Recognition of DMSO

[0042] The Cd-MOF was prepared as described in Example 1, and the prepared Cd-MOF was used in fluorescence recognition of DMSO.

[0043] The specific application method is: soak the above-mentioned Cd-MOF in acetone for 72 hours to exchange the high-boiling point DMF molecules in the pores of Cd-MOF; Disperse evenly to obtain a Cd-MOF suspension dispersed in a DMF solvent, and then add DMSO test solution to the Cd-MOF suspension for fluorescence detection.

Embodiment 3

[0044] Example 3 Cd-MOF captures CO 2 application in

[0045] Preparation of Cd-MOF as described in Example 1, the prepared Cd-MOF captures CO 2 in the application.

[0046] The specific application method is: soak the Cd-MOF in ethanol for 72 hours to exchange the high-boiling DMF molecules in the channels of the Cd-MOF; then vacuum-dry at 80-200°C for 10 hours to remove the DMF molecules in the channels; Filling of Cd-MOF to deposit CO 2 in the adsorbent device.

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Abstract

The invention discloses preparation of a Cd-MOF (Cadmium-Metal Organic Framework) and an application of the Cd-MOF in fluorescent recognition of DMSO (Dimethylsulfoxide) and capture of CO2 (Carbon Dioxide). The preparation method of the Cd-MOF comprises the following steps: adding a cadmium salt and a ligand in a molar ratio of 1: (0.8-1.2) into a solvent, carrying out ultrasonic treatment until the cadmium salt and the ligand are completely mixed, and performing reaction at 60-100 DEG C for 1-5 days to obtain the Cd-MOF, wherein the cadmium salt is cadmium nitrate nonahydrate, and the ligandis H2BTTA. The synthesis raw materials are cheap and easy to obtain, the conditions are mild, and large-batch preparation is easy. The prepared Cd-MOF has good thermal stability, can maintain the original frame structure after the guest molecule is removed, and has a strong fluorescence enhancement effect. Therefore, the Cd-MOF has good potential application value in DMSO detection, and has good potential application value in selective adsorption of CO2-N2 and CO2-CH4.

Description

technical field [0001] The invention relates to the technical field of preparation of metal-organic framework materials, in particular to the preparation of a Cd-MOF and its ability to recognize DMSO and capture CO in fluorescence. 2 in the application. Background technique [0002] Dimethyl sulfoxide (DMSO) is widely used as a solvent in various industries, and has a strong ability to penetrate skin and cell membranes, and can penetrate organs such as the bladder. Excessive exposure may cause symptoms such as headache, nausea and dizziness, and cause harm to human health. In addition, the excellent solvating ability of DMSO also makes it a carrier of many toxins, pollutants and drugs, and there will be certain residues in many industrial products. Therefore, the detection and quantitative analysis of DMSO is of great significance. Common methods for detecting DMSO include titration, gas chromatography, high performance liquid chromatography, and fluorescence spectroscopy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09K11/06B01D53/02
CPCB01D53/02B01D2253/204C08G83/008C09K11/06C09K2211/187Y02P20/151Y02C20/40
Inventor 王晓璐梁林锋张献明
Owner SHANXI UNIV