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a triangular cone 8 sns 6 Preparation method of microparticles

A triangular cone-shaped, particle-shaped technology, which is applied in the field of energy and environmental photocatalysis, can solve the problems of being unsuitable for large-scale industrial applications, long preparation time, and high preparation cost, and achieves intuitive and controllable preparation process, narrow particle size distribution, and equipment less demanding effect

Active Publication Date: 2021-07-16
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method requires too many types of drugs, the process is complicated, and the preparation time is too long. It still needs to be completed under the protection of an inert gas, which leads to high preparation costs and is not suitable for large-scale industrial applications.

Method used

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  • a triangular cone <sub>8</sub> sns <sub>6</sub> Preparation method of microparticles
  • a triangular cone <sub>8</sub> sns <sub>6</sub> Preparation method of microparticles
  • a triangular cone <sub>8</sub> sns <sub>6</sub> Preparation method of microparticles

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: a kind of triangular pyramid Ag 8 SnS 6 The preparation method of microparticles, concrete steps are:

[0031] (1) Dissolve 3 mmol of silver source (silver source is silver acetate), 1 mmol of tin source (tin source is stannous chloride dihydrate), 8 mmol of sulfur source (sulfur source is n-dodecanethiol) in 40 mL oil In an amine solvent, stir evenly to obtain a precursor solution; the dissolution process is to use an ultrasonic oscillator with a frequency of 40KHz for 10 minutes; the stirring speed is 550 rpm; silver source (silver acetate), tin source (tin protochloride dihydrate), The molar ratio of sulfur source (n-dodecanethiol) is 3:1:8;

[0032] (2) At a stirring speed of 550 rpm, heat the precursor solution obtained in step (1) and evacuate to a temperature of 130°C, stop vacuuming and continue heating to a temperature of 180°C for 0.5h, and then continue heating to React at 330°C for 0.5h, cool to room temperature, wash with a mixed solution o...

Embodiment 2

[0036] Embodiment 2: a kind of triangular pyramid Ag 8 SnS 6 The preparation method of microparticles, concrete steps are:

[0037] (1) Dissolve 2.5 mmol silver source (silver source is silver acetate), 1 mmol tin source (tin source is stannous chloride dihydrate), 6 mmol sulfur source (sulfur source is n-dodecanethiol) in 40 mL oleylamine In the solvent, stir evenly to obtain a precursor solution; the dissolution process is to use an ultrasonic oscillator with a frequency of 40KHz for 10min; the stirring speed is 400 rpm; silver source (silver acetate), tin source (tin protochloride dihydrate), The molar ratio of source (n-dodecanethiol) is 2.5:1:6;

[0038] (2) At a stirring speed of 400 rpm, heat the precursor solution obtained in step (1) and evacuate to a temperature of 110°C, stop vacuuming and continue heating to a temperature of 150°C for 1 hour, and then continue heating to a temperature of React at 270°C for 2 hours, cool to room temperature, wash with a mixed sol...

Embodiment 3

[0040] Embodiment 3: a kind of triangular pyramid Ag 8 SnS 6 The preparation method of microparticles, concrete steps are:

[0041] (1) Dissolve 4mmol silver source (silver source is silver acetate), 1mmol tin source (tin source is stannous chloride dihydrate), 8 mmol sulfur source (sulfur source is n-dodecanethiol) in 40mL oleylamine solvent , stirring evenly to obtain a precursor solution; the dissolution process is to use an ultrasonic oscillator with a frequency of 40KHz for 10 minutes; the stirring speed is 600 rpm; silver source (silver acetate), tin source (tin protochloride dihydrate), sulfur source (n-dodecanethiol) molar ratio is 4:1:8;

[0042] (2) Under the condition of stirring speed of 600 rpm, heat the precursor solution obtained in step (1) and evacuate to a temperature of 120°C, stop vacuuming and continue to heat to a temperature of 200°C for 0.8h, and then continue to heat to React at 300°C for 1 hour, cool to room temperature, wash with a mixed solution ...

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Abstract

The invention relates to a triangular pyramid Ag 8 SnS 6 The invention relates to a method for preparing microparticles, which belongs to the technical field of energy and environmental photocatalysis. In the present invention, the silver source, tin source, and sulfur source are dissolved in oleylamine solvent to obtain a precursor solution; under stirring conditions, the precursor solution is heated and vacuumed to a temperature of 110-130°C, then the vacuum is stopped and the heating is continued to React at a temperature of 150-200°C for 0.5-1h, then continue heating to a temperature of 270-330°C for 0.5-2h, cool to room temperature, wash with a mixed solution of absolute ethanol and n-hexane, centrifuge and discard the upper layer, and use The mixed solution of water ethanol and n-hexane washes the solid 3 to 5 times and dries to obtain the triangular pyramidal Ag 8 SnS 6 particle. Ag of the present invention 8 SnS 6 The preparation method of microparticles is simple, the synthetic temperature is lower, the crystallinity of product is good, is suitable for batch synthesis; Ag of the present invention 8 SnS 6 Microparticles can be used as photocatalysts for photocatalytic degradation of organic pollutants.

Description

technical field [0001] The invention relates to a triangular pyramid Ag 8 SnS 6 The preparation method and application of microparticles belong to the technical field of energy and environmental photocatalysis. Background technique [0002] With the advancement of science and the gradual increase of social needs, organic pollutants are discharged in many industries, which will cause damage to the ecological environment and human health. Photocatalytic technology is an environmental purification technology with easy operation, high efficiency, low energy consumption, no secondary pollution, and very stable catalytic performance. It has been used in many related frontier industries such as ecological environment management, organic material synthesis, environmental protection material research and development, and high-efficiency antibacterial and anti-virus. However, at present, most of the mainstream photocatalysts in the world are n-type semiconductor materials, and ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04B01J35/00
CPCB01J27/04B01J35/004
Inventor 孙淑红王为朱艳沈韬胡永茂杨斌
Owner KUNMING UNIV OF SCI & TECH