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Preparation method of ZIF-67-silver selenide nano composite material

A ZIF-67-, nano-composite material technology, applied in chemical instruments and methods, special compound water treatment, medical preparations containing active ingredients, etc. problems, to achieve high-efficiency photothermal conversion performance, good product dispersion performance, and good biocompatibility.

Active Publication Date: 2020-10-16
HUBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing preparation of silver selenide nanocomposites is not only complicated in technology, such as the need for inert atmosphere protection, or the need for complex configuration, highly toxic precursor solution, or complex equipment, high cost, and difficult large-scale production. The dispersion performance of the obtained nanoparticles is poor, and there is agglomeration phenomenon

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  • Preparation method of ZIF-67-silver selenide nano composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of ZIF-67-silver selenide nanocomposite material includes the following steps:

[0026] 1. Preparation of ZIF precursor:

[0027] (1) Dissolve 2mmol of cobalt nitrate in 20ml of methanol solution and disperse uniformly by ultrasonic to obtain solution A;

[0028] (2) 10mmol of 2-methylimidazole was dissolved in 8ml of methanol solution and dispersed uniformly by ultrasonic to obtain solution B;

[0029] (3) Add solution B to A slowly, let it stand for 12h, centrifuge at 8000r / min for 5min, wash with methanol 1-2 times to obtain blue nanoparticles.

[0030] 2. Preparation of silver selenide nanocomposite materials:

[0031] (1) Weigh about 0.2mmol of ZIF-67 and disperse it in 20ml of water to obtain solution a;

[0032] (2) Weigh about 0.6mmol of selenium powder and dissolve it in 1ml of hydrazine hydrate solution to obtain solution b;

[0033] (3) Put ab into a 50ml three-necked flask, add magnets, and react for 2h in a constant temperature oil bath at 70°C;

[0...

Embodiment 2

[0037] A preparation method of ZIF-67-silver selenide nanocomposite material includes the following steps:

[0038] 1. Preparation of ZIF precursor:

[0039] (1) Dissolve 2mmol of cobalt nitrate in 20ml of methanol solution and disperse uniformly by ultrasonic to obtain solution A;

[0040] (2) 10mmol of 2-methylimidazole was dissolved in 8ml of methanol solution and dispersed uniformly by ultrasonic to obtain solution B;

[0041] (3) Add solution B to A slowly, let it stand for 12h, centrifuge at 8000r / min for 5min, wash with methanol 1-2 times to obtain blue nanoparticles.

[0042] 2. Preparation of silver selenide nanocomposite materials:

[0043] (1) Weigh about 0.2mmol of ZIF-67 and disperse it in 20ml of water to obtain solution a;

[0044] (2) Weigh about 0.6mmol of selenium powder and dissolve it in 1ml of hydrazine hydrate solution to obtain solution b;

[0045] (3) Put ab into a 50ml three-necked flask, add magnets, and react for 2h in a constant temperature oil bath at 80°C;

[0...

Embodiment 3

[0049] A preparation method of ZIF-67-silver selenide nanocomposite material includes the following steps:

[0050] 1. Preparation of ZIF precursor:

[0051] (1) Dissolve 2mmol of cobalt nitrate in 20ml of methanol solution and disperse uniformly by ultrasonic to obtain solution A;

[0052] (2) 10mmol of 2-methylimidazole was dissolved in 8ml of methanol solution and dispersed uniformly by ultrasonic to obtain solution B;

[0053] (3) Add solution B to A slowly, let it stand for 12h, centrifuge at 8000r / min for 5min, wash 1-2 times with methanol to obtain blue nanoparticles.

[0054] 2. Preparation of silver selenide nanocomposite materials:

[0055] (1) Weigh about 0.2mmol of ZIF-67 and disperse it in 20ml of water to obtain solution a;

[0056] (2) Weigh about 0.6mmol of selenium powder and dissolve it in 1ml of hydrazine hydrate solution to obtain solution b;

[0057] (3) Put ab into a 50ml three-necked flask, add magnets, and react in a constant temperature oil bath at 150°C for 2h;

[...

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Abstract

The invention discloses a preparation method of a ZIF-67-silver selenide nano composite material. The preparation method comprises the following steps: dissolving cobalt nitrate in a methanol solution, carrying out uniform ultrasonic dispersion to obtain a solution A, dissolving 2-methyl imidazole in the methanol solution, carrying out uniform ultrasonic dispersion to obtain a solution B; slowly dropwise adding the solution B into the solution A, standing, centrifuging, washing with methanol to obtain ZIF; weighing a proper amount of ZIF-67, dispersing ZIF-67 in 20 mL of water to obtain a solution a, weighing a proper amount of selenium powder, dissolving selenium powder in a hydrazine hydrate solution to obtain a solution b, adding the solutions a,b into a three-necked bottle, adding a magnet, putting the three-necked bottle in an oil bath, weighing a proper amount of silver nitrate, dissolving silver nitrate in water, adding the solution into the three-necked bottle, continuously reacting for 2 hours, centrifuging the obtained solution, and washing to obtain a finished product. The prepared nano composite ions are cubic, uniform in size, good in dispersity and low in toxicity, can show an efficient photo-thermal conversion performance under the irradiation of near-infrared light, and can be applied to the biomedical fields such as photo-thermal therapy of tumors. In addition,the method is simple in process, low in energy consumption, small in equipment number and convenient to popularize.

Description

Technical field [0001] The invention relates to the technical field of nanocomposite materials, in particular to a method for preparing ZIF-67-silver selenide nanocomposite materials. Background technique [0002] As a non-magnetic narrow band gap semiconductor, silver selenide not only has high thermoelectric coefficient and electrical conductivity, but also has significant infrared conductivity properties. It can be widely used as a photosensitizer in the research of optoelectronic materials, seawater desalination, and tumor light. Many fields such as heat treatment and sewage treatment have become one of the hotspots of research at home and abroad. At present, the methods for preparing silver selenide nanocomposites are mainly reported by mechanical ball milling, chemical methods, microemulsion methods, etc. The nanocomposites prepared by these methods usually have uneven nanoparticle sizes, and some are in an amorphous state. And other shortcomings, and the process condition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/02C02F1/28C02F1/30A61K41/00A61P35/00C02F103/08
CPCB01J20/226B01J20/0288C02F1/285C02F1/281C02F1/30A61K41/0052A61P35/00C02F2103/08C02F2305/10
Inventor 徐祖顺吴佳芮甄琳潘馨圆
Owner HUBEI UNIV
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