Preparation method of silver chloride

A technology of silver chloride and silver solution, applied in the field of material chemistry, can solve the problems of high cost, inability to regulate and control the catalytic activity of silver chloride, and high production cost of silver chloride, so as to prevent particle agglomeration, realize catalytic activity, and reduce the consumption of raw materials. effect used

Active Publication Date: 2016-09-21
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ionic liquids are liquids composed entirely of ions at room temperature, which are expensive and therefore lead to higher production costs for silver chloride
At the same time, the above-mentioned methods can only prepare silver chloride with one morphology, and the preparation of silver chloride with different shapes and particle sizes cannot be realized by changing the reaction conditions, so that the catalytic activity of silver chloride cannot be regulated. great limitations

Method used

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  • Preparation method of silver chloride
  • Preparation method of silver chloride
  • Preparation method of silver chloride

Examples

Experimental program
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Embodiment 1

[0031] A preparation method of silver chloride of the present invention, comprises the following steps:

[0032] (1) Prepare 20 mL of silver nitrate solution with a concentration of 0.03 mol / L, add concentrated ammonia water with a mass percentage concentration of 25% to 28% to prepare silver ammonia solution, and adjust its pH value to 11.0 for subsequent use;

[0033] (2) the silver ammonia solution prepared by step (1) and cetyltrimethylammonium chloride solution (cetyltrimethylammonium chloride is 2 times of the amount of substance of silver nitrate) are mixed;

[0034] (3) Transfer the mixed solution after step (2) to a 50mL autoclave with a polytetrafluoroethylene liner, and react at 120°C for 8 hours;

[0035] (4) After the reaction product after step (3) was naturally cooled to room temperature, the sample was centrifuged, washed with deionized water and ethanol for 3 times, and finally vacuum-dried for 8 hours to obtain the silver chloride product.

[0036] Test the ...

Embodiment 2

[0038] A preparation method of silver chloride of the present invention, comprises the following steps:

[0039] (1) Prepare 20 mL of silver nitrate solution with a concentration of 0.03 mol / L, add concentrated ammonia water with a mass percentage concentration of 25% to 28% to prepare silver ammonia solution, and adjust its pH value to 11.0 for subsequent use;

[0040] (2) the silver ammonia solution prepared by step (1) and cetyltrimethylammonium chloride solution (cetyltrimethylammonium chloride is 2 times of the amount of substance of silver nitrate) are mixed;

[0041] (3) Transfer the mixed solution after step (2) to a 50mL autoclave with a polytetrafluoroethylene liner, and react at 120°C for 15min;

[0042] (4) After the reaction product after step (3) was naturally cooled to room temperature, the sample was centrifuged, washed with deionized water and ethanol for 3 times, and finally vacuum-dried for 8 hours to obtain the silver chloride product.

[0043] The SEM figur...

Embodiment 3

[0045] A preparation method of silver chloride of the present invention, comprises the following steps:

[0046] (1) Prepare 10 mL of silver acetate solution with a concentration of 0.01 mol / L, adjust its pH value to 4.0 with dilute nitric acid, and set aside;

[0047] (2) the silver acetate solution prepared by step (1) and 25mL p-chlorophenol solution (p-chlorophenol is 20 times of the amount of silver acetate substance) are mixed uniformly;

[0048] (3) Transfer the mixed solution after step (2) to a 50mL autoclave with a polytetrafluoroethylene liner, and react at 140°C for 16 hours;

[0049] (4) After the reaction product after step (3) was naturally cooled to room temperature, the sample was centrifuged, washed with deionized water and ethanol for 3 times, and finally vacuum-dried for 8 hours to obtain the silver chloride product.

[0050] The SEM figure of present embodiment gained silver chloride product is as Figure 4 shown by Figure 4 It can be seen that the obt...

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Abstract

The invention discloses a preparation method of silver chloride. According to the invention, raw materials which are a silver-containing solution and a chlorine-containing additive solution are well mixed, and a reaction is allowed; the product obtained after the reaction is subjected to centrifugation, washing and drying, such that silver chloride is obtained. The chlorine-containing additive comprises chlorophenol or chlorine-containing quaternary ammonium salt. According to the invention, chlorophenol or chlorine-containing quaternary ammonium salt is adopted as a chlorine source for silver chloride synthesis. Cl<-> released after the reaction can be adopted as a chlorine source of silver chloride. Also, organic groups can be adsorbed on the surfaces of silver chloride, and assist in preventing particle agglomeration with steric hindrance. Therefore, the use of other dispersing agents can be avoided, and raw material application can be reduced. Also, through changing the doses of the silver-containing solution and the chlorine-containing additive, specific adsorption of the chlorine-containing additive on different crystal faces of the surfaces of silver chloride particles is realized, and silver chloride with different morphology can be obtained. Also, through changing the reaction time, silver chloride particle growth time can be changed, such that the purpose of controlling particle size is met.

Description

technical field [0001] The invention relates to the field of material chemistry, in particular to a method for preparing silver chloride with controllable morphology and particle size. Background technique [0002] Environmental pollution and energy shortage have become important issues restricting the development of human society. The semiconductor photocatalysis technology that has emerged in recent years can use sunlight to degrade organic pollutants, and can also photolyze water to produce oxygen and hydrogen, which provides a possible way to solve these two problems. At present, efficient and stable photocatalytic materials are mainly semiconductor materials with wide bandgap, which can only use the ultraviolet part of sunlight, and the energy utilization rate is low. Research in recent years has found that the application of silver chloride in the field of photocatalysis has broad prospects. It can use visible light to degrade organic pollutants, sterilize, self-clean...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G5/02
CPCC01G5/02C01P2002/72C01P2004/03C01P2004/32C01P2004/38C01P2004/41C01P2004/61C01P2004/62
Inventor 田庆华邓多郭学益杨英
Owner CENT SOUTH UNIV
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