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Preparation method and application of a water-stable nanocomplex

A complex and water-stabilized technology, which is applied in the field of material science, can solve the problems of poor water stability of complexes, limit large-scale applications, and low skeleton density, and achieve the effects of long reaction cycle, simple method, and high energy consumption

Inactive Publication Date: 2016-03-09
孙欣雨
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Metal-organic complexes are materials in which inorganic metal ions or metal ion clusters are connected by organic bridging ligands through coordination bonds to form an extended network structure. Because the material has a large specific surface area, narrow pore size distribution, and high thermal The unique excellent properties such as stability and low skeletal density have potential important applications in many fields such as catalyst supports, selective separation of gases, and gas storage, and are current research hotspots. Preparation research is in its infancy
[0004] Metal-organic complexes containing 1,3,5-triazine skeleton (hereinafter referred to as triazine group) have high temperature resistance and excellent optical and electrochemical properties, and play an important role in high-performance electron transport materials and separation functional materials. However, similar to many other metal-organic complexes, this complex has poor water stability, which limits its large-scale application in industry. Changing the structure is an important way to improve its water stability and expand the application of this type of complex. an important basis for

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  • Preparation method and application of a water-stable nanocomplex
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  • Preparation method and application of a water-stable nanocomplex

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Experimental program
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Effect test

Embodiment 1

[0037] Preparation of triazine-based complex crystals in the prior art:

[0038] 0.2 mmol of triazine-based tricarboxylic acid and 0.8 mmol of zinc perchlorate were dissolved in 15 mL of DMF, sealed in a reaction kettle, and heated at 85° C. for three days to obtain triazine-based complex crystals. Single crystal diffraction analysis shows that the triazine-based complex has the chemical formula [Zn 3 L 2 (H 2 O) 3 ]·9H 2 O·8DMF, evenly distributed in the structure The open channel of , which belongs to 3D porous metal organic framework, its XRD analysis is shown in the appendix figure 1 , the XRD pattern shows characteristic absorptions at 2θ 5.6, 11.3, 16.9 and 21.3. Microscopic analysis of the triazine-based complex crystal shows that its crystal appearance is amorphous in water.

[0039] (1) Preparation of nano-triazine-based complexes:

[0040] Dissolve 0.8g of zinc nitrate in 1mL of water to prepare an aqueous solution of zinc nitrate, add this solution to 1mL o...

Embodiment 2

[0048] (1) Preparation of nano-triazine-based complexes:

[0049] Dissolve 1.0g of zinc nitrate in 1mL of water to prepare an aqueous solution of zinc nitrate, add this solution to 1mL of DMF solution containing 1.0g of triazine-based tricarboxylic acid, shake and blend, and carefully add to the upper layer of the mixture 1mL of absolute ethanol and 2mL of an aqueous solution of potassium hydroxide with a mass fraction of 7% were shaken and blended to obtain a colloidal homogeneous liquid, which was left to stand for 0.8h and then centrifuged, and the obtained solid was washed three times with DMF and centrifuged to prepare The nano-triazine-based complex was obtained with a yield of 83%.

[0050] (2) Preparation of triazine-based tricarboxylic acid H 3 L

[0051] Triazine-based tricarboxylic acid H in (1) 3 The preparation steps of L are as follows: under stirring conditions, blend 13mmol of 4-aminobenzoic acid and 15mL of an aqueous solution containing 15mmol of sodium hy...

Embodiment 3

[0057] (1) Preparation of nano-triazine-based complexes:

[0058] Dissolve 1.2g of zinc nitrate in 1mL of water to prepare an aqueous solution of zinc nitrate, add this solution to 1mL of DMF solution containing 1.1g of triazine-based tricarboxylic acid, shake and blend, and carefully add to the upper layer of the mixture 1mL of absolute ethanol and 1mL of an aqueous solution of potassium hydroxide with a mass fraction of 5% were shaken and blended to obtain a colloidal homogeneous liquid, which was left to stand for 0.8h and then centrifuged, and the obtained solid was washed three times with DMF and centrifuged to prepare The nano-triazine-based complex was obtained with a yield of 83%.

[0059] (2) Preparation of triazine-based tricarboxylic acid H 3 L

[0060] Triazine-based tricarboxylic acid H in (1) 3 The preparation steps of L are as follows: under stirring conditions, blend 13mmol of 4-aminobenzoic acid and 15mL of an aqueous solution containing 16mmol of sodium hy...

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Abstract

The invention relates to a preparation method and application of a hydrostable nano complex. The preparation method comprises the following steps: dissolving zinc nitrate in water to obtain a zinc nitrate water solution, adding the solution into a dimethylformamide solution of triazinyl tribasic carboxylic acid, and blending by shaking; carefully adding anhydrous ethanol and a potassium hydroxide water solution into the supernatant of the mixed solution, blending by shaking to obtain a colloid homogeneous liquid, standing, carrying out centrifugal separation, and washing the obtained solid to obtain the nano triazinyl complex; and adding DMF (N,N-dimethylformamide) and hexamethyne diisocyanate into the prepared nano triazinyl complex under stirring conditions, keeping the temperature, cooling the solid, separating, washing and drying to obtain the hydrostable nano complex material. The nano complex material has the advantages of small particle size and high specific area, has abundant imino (-NH-) active sites in the structure, has higher capacity for adsorbing Hg (II) pollutants in water, and thus, has favorable industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a preparation method and application of a water-stable nano complex. Background technique [0002] Nanomaterials are a class of materials with a particle size of less than 100nm. Compared with bulky materials, the fluctuation of electrons and the interaction of atoms in nanomaterials are affected by the size, so while their chemical composition does not change, The material has many newer and better properties. However, due to its structural characteristics such as small particle size, large specific surface area, and large specific surface energy, it is easy to agglomerate during the synthesis process, resulting in a decrease in its activity. For this reason, the preparation of monodisperse and shape-controllable nanoparticles is an important research direction. [0003] Metal-organic complexes are materials in which inorganic metal ions or metal ion clust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D251/70B01J20/22C02F1/28B82Y40/00
Inventor 孙欣雨
Owner 孙欣雨
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