Method for synchronous precipitation and polymeric synthesis of floatable silver sulfide nanocrystalline

A nanocrystalline, silver sulfide technology, applied in chemical instruments and methods, silver compounds, silver compounds, etc., can solve the problems of increased cost, easy to sink to the bottom, large particle size of silver sulfide, etc., to achieve cost reduction, inhibition of agglomeration, The effect of mild reaction conditions
CN101885507BInactive Publication Date: 2011-12-07HEILONGJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEILONGJIANG UNIV
Publication Date
2011-12-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for synchronous precipitation and polymeric synthesis of floatable silver sulfide nanocrystalline, relates to a preparation method of the silver sulfide, and solves the problems that a surfactant is needed to be added so as to increase the cost and the prepared silver sulfide has large grain diameter and easily sinks to the bottom in water in the conventional microemulsion method. The method comprises the following steps of: 1, preparing solution of silver nitrate ethanol; 2, adding toluene into the silver nitrate ethanol, and dripping 3-mercaptotrimethoxy silane, and stirring to obtain sol; 3, performing hydrothermal synthesis; 4, distilling; 5, drying; and 6, roasting to obtain the floatable silver sulfide nanocrystalline. The floatable silver sulfide nanocrystalline is spherical particles, has the grain diameter of 2 to 20nm, and can float on the water surface. During preparation, the surfactant is not used, so that the cost is reduced; and the reaction condition is mild and easily controlled. The method can be applied to the fields of photocells, photocouductors, photocatalysts, IR detectors, and the like.
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Description

technical field

[0001] The present invention relates to the preparation method of silver sulfide. Background technique

[0002] As a direct narrow-band semiconductor, silver sulfide has been widely used in photovoltaic cells, photoconductors, photocatalysts and IR detectors because of its good chemical stability and photoelectric properties. The existing microemulsion method for preparing silver sulfide is to disperse the sulfur source material in a solvent with surfactants and co-surfactants, and prevent nanoparticles from Aggregation, thereby controlling particle size. This method must use a surfactant to inhibit agglomeration, thereby increasing the preparation cost, and the particle size of the obtained silver sulfide particles is 20nm to 80nm, the particle size is large, and it is easy to deposit at the bottom in water, and the dispersion is not good, which is not conducive to application. . Contents of the invention

[0003] The present invention aims to solve the...

Claims

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