Preparation method of polyhedral silver phosphate

A technology of silver phosphate and polyhedron, which is applied in the field of photocatalysis, can solve the problems of narrow light response range, low quantum efficiency, and restrictions on widespread promotion, and achieves the effects of high photocatalytic activity, simple preparation method and novel structure.

Inactive Publication Date: 2014-03-12
YANGZHOU UNIV
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Problems solved by technology

[0003] Titanium dioxide is currently the most widely used photocatalyst, but its wide application in industry has been restricted due to its narrow photoresponse range and low quantum efficiency.

Method used

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  • Preparation method of polyhedral silver phosphate
  • Preparation method of polyhedral silver phosphate
  • Preparation method of polyhedral silver phosphate

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Embodiment Construction

[0022] 1. Preparation of silver phosphate photocatalyst:

[0023] 1. Add silver nitrate to ionized water to prepare a silver nitrate aqueous solution with a concentration of 0.1-1mol / L.

[0024] 2. Take 100mL of silver nitrate aqueous solution, add ammonia water drop by drop, shake while dripping, until the initial precipitate just dissolves, and prepare silver ammonia solution. Take 40mL of silver ammonia solution, add 0.01-1g of sodium dodecylbenzenesulfonate, stir evenly, and form the first mixed solution. The concentration of sodium dodecylbenzenesulfonate in the first mixed liquid is: 0.3-30g / L.

[0025] 3. Add disodium hydrogen phosphate to ionized water to prepare an aqueous solution of disodium hydrogen phosphate with a concentration of 0.01-0.1 mol / L.

[0026] 4. Take 30 mL of disodium hydrogen phosphate aqueous solution, add 0.01 to 1 g of sodium dodecylbenzenesulfonate, and stir evenly to form the second mixed liquid. The concentration of sodium dodecylbenzenesul...

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Abstract

The invention relates to a preparation method of polyhedral silver phosphate and belongs to the technical field of photocatalysis. The preparation method comprises the following steps: firstly, mixing a silver nitrate aqueous solution and ammonia water to prepare an ammoniacal silver nitrate; uniformly mixing the ammoniacal silver nitrate and sodium dodecyl benzene sulfonate to form a first mixed solution; uniformly mixing a disodium hydrogen phosphate aqueous solution and sodium dodecyl benzene sulfonate to form a second mixed solution; under the stirring condition, dropwise adding the second mixed solution into the first mixed solution to obtain a yellow turbid solution; finally, after carrying out centrifugal washing on the yellow turbid solution, drying to obtain the polyhedral silver phosphate. The preparation method disclosed by the invention is simple; production can be carried out at room temperature; heating is not needed; the preparation method is energy-saving and environmental-friendly and is suitable for industrial production. The prepared silver phosphate is of a polyhedral shape, and has novel structure and high photocatalytic activity.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, and in particular relates to a preparation method of polyhedral silver phosphate as a photocatalyst. Background technique [0002] Environmental pollution is one of the focal issues affecting the survival and development of human beings today. Photocatalytic technology has the characteristics of high catalytic activity, good stability, and environmental friendliness, and has broad application prospects in environmental pollution control. Compared with other technologies, it has the advantage of mild reaction conditions. The photocatalytic degradation reaction is generally carried out under normal temperature and pressure, and it can completely decompose organic pollutants in the air or aqueous solution, and mineralize them into carbon dioxide and water. [0003] Titanium dioxide is currently the most widely used photocatalyst, but its wide application in industry is restricted due to its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/37B01J27/18
Inventor 刁国旺狄健朱脉勇黄建祥
Owner YANGZHOU UNIV
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