Double-function mercapto Schiff base metal organogel-nanometer composite material, and preparation method and applications thereof

A nanocomposite material and metal-organic technology, which is applied in the field of bifunctional mercapto-Schiff base metal organogel-nanocomposite materials and its preparation, can solve the problem of low adsorption capacity of macromolecular stable pollutants, chemical activation requiring thorough cleaning, physical It takes a long time for activation to achieve the effect of high porosity, simple operation and large specific surface area

Active Publication Date: 2019-10-15
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these traditional common adsorbents also have many shortcomings, including poor removal effect on many hydrophilic pollutants, low adsorption capacity for macromolecular stable pollutants, long time for physical activation, and thorough cleaning for chemical activation, etc.

Method used

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  • Double-function mercapto Schiff base metal organogel-nanometer composite material, and preparation method and applications thereof
  • Double-function mercapto Schiff base metal organogel-nanometer composite material, and preparation method and applications thereof
  • Double-function mercapto Schiff base metal organogel-nanometer composite material, and preparation method and applications thereof

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preparation example Construction

[0037] The present invention also provides a method for preparing the above-mentioned bifunctional mercapto-Schiff base metal organogel-nanocomposite material AgNPs@Ag(I)-MTMP, the preparation method comprising: placing silver salt AgL and MTMP in a solvent After mixing and adjusting the pH, the contact reaction was carried out, and then left to stand and dried to obtain AgNPs@Ag(I)-MTMP.

[0038] In the above preparation method, the one-dimensional linear structure formed by the Ag(I)-MTMP coordination polymer is piled up with the solvent DMF, H 2 The effect of O and so on wraps the mixed solvent to form a metal-organic gel; the excess silver salt can form silver nanoparticles in situ after heat treatment and attach to the linear fiber network formed by the Ag(I)-MTMP coordination polymer. The one-dimensional linear polymer fibers are packed to form spaces, which makes the resulting material have strong adsorption capacity.

[0039] In the above preparation method, the molar r...

preparation example 1

[0053] Preparation of MTMP:

[0054] Take AMTD (1.0mmol), salicylaldehyde (1.0mmol), and 20mL of absolute ethanol for magnetic stirring, and reflux reaction at 80°C for 3h to obtain a yellow precipitate; filter, wash the filtered solid with water, methanol, and ether, and then vacuum Dry for 5 hours to constant weight.

[0055] The obtained solid powder was 1 HNMR detection, the obtained data are 1 H NMR (500MHz, d 6 -DMSO): δ14.5(d,1H,SH)11.21(d,1H,OH),8.80,(d,1H,C=N),7.88(d,1H,NH),7.5,7.0(d, 4H, benzene ring H).

Embodiment 1

[0057] Take MTMP (1.0mmol), AgNO 3 (1.2mmol), 10mL DMF, 10mLH 2 O mixed, while adjusting the pH to 6.5, heated and stirred at 50°C for 10 min to obtain an orange solution, and left to stand at 25°C for 10 min to obtain an orange gel; freeze-dried at -50°C for 48 h to obtain AgNPs@Ag(I) - MTMP metal organic gel - nanocomposite.

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Abstract

The invention discloses a double-function mercapto Schiff base metal organogel-nanometer composite material, and a preparation method and applications thereof. The double-function mercapto Schiff basemetal organogel-nanometer composite material AgNPs@Ag(I)-MTMP contains silver nanometer particle AgNPs, Ag(I)-MTMP, and a solvent; AgNPs is adsorbed by Ag(I)-MTMP, and the solvent is coated by Ag(I)-MTMP through hydrogen bonds and molecular effect; the chemical structure of Ag(I)-MTMP is [Ag(MTMP)]n(L)n, [Ag(MTMP)]n<n+> structure is represented by formula I, wherein L is used for representing a minus monovalence negative ion, n is used for representing a positive integer, MTMP is 2-((5-mercapto-1, 3, 4-thiadiazole-2-imino)methyl)phenol. The double composite material is capable of removing acidic organic dye molecular through high efficiency adsorption, and possesses antibacterial function.

Description

technical field [0001] The invention relates to an organogel-nano composite material, in particular to a bifunctional mercapto Schiff base metal organogel-nano composite material and its preparation method and application. Background technique [0002] We all know that water is the most important component of life on earth. With the development of modern society, the world's population is growing geometrically, and the demand for clean water has greatly increased. However, large-scale industrial production and agricultural activities produce a large amount of waste water, causing serious environmental water pollution, deteriorating water quality, and the world is facing serious water shortage problems. [0003] Organic dyes are widely used in textile, leather, tanning, papermaking, food processing, plastics, cosmetics, rubber, printing and other industries, and are the main pollutants of industrial wastewater. The carcinogens produced during the degradation process of dyes...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30A01N55/02A01P3/00A01P1/00C02F1/28C02F1/50C02F101/30
CPCB01J20/223B01J20/02C02F1/285C02F1/50A01N55/02B01J2220/4812B01J2220/4806C02F2303/04C02F2101/308
Inventor 承勇邓首勇李娟梅钰
Owner ANHUI NORMAL UNIV
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