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Several sliver phosphate photocatalysts and preparation method thereof

A photocatalyst, catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc.

Inactive Publication Date: 2013-12-25
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, it is still a great challenge to find a low-cost, safe, non-toxic, stable and easily recyclable photocatalytic material.

Method used

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  • Several sliver phosphate photocatalysts and preparation method thereof

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Experimental program
Comparison scheme
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Embodiment approach 1

[0013] Dissolve 0.05mol silver nitrate in 50mL distilled water to make 1mol / L silver ion aqueous solution; dissolve 0.025mol potassium pyrophosphate in 100mL distilled water to make 0.25mol / L pyrophosphate solution; slowly drop silver ions Add it into the pyrophosphate solution, stir vigorously for 10 minutes; filter the resulting precipitate with suction, wash it with distilled water and absolute ethanol in turn, and then dry it in vacuum at 60°C for 6 hours to obtain a silver pyrophosphate photocatalyst.

Embodiment approach 2

[0015] Potassium pyrophosphate in embodiment 1 is replaced by sodium tripolyphosphate, and the concentration of tripolyphosphate is 0.33mol / L.

Embodiment approach 3

[0017] The potassium pyrophosphate in embodiment 1 is replaced by sodium metaphosphate, and the concentration of sodium metaphosphate is 0.16mol / L.

[0018] The photocatalyst prepared by the present invention can be supported on a carrier, and the present invention is not limited to the above embodiments.

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Abstract

The invention relates to several silver phosphate photocatalysts and a preparation method thereof, belonging to the field of inorganic photocatalytic materials. The several photocatalysts comprise silver pyrophosphate, silver tripolyphosphate and silver metaphosphate. The photocatalysts prepared by the preparation method have photocatalytic activity in a wide wavelength range, and can be used for degrading organic compounds through photocatalytic oxidation under the radiation of ultraviolet light, visible light or natural light.

Description

technical field [0001] The present invention relates to three photocatalysts. [0002] The present invention also relates to a method for preparing the above-mentioned catalyst. [0003] The invention also relates to the use of the catalysts described above. Background technique [0004] The method of using renewable energy to control water pollution and air pollution has been developed rapidly in the past few decades, among which photocatalytic technology is the safest and environment-friendly method. The core of photocatalytic purification technology is photocatalytic materials. So far, it is still a great challenge to find a low-cost, safe, non-toxic, stable and easily recyclable photocatalytic material. In 2010, Japanese scholar Professor Ye Jinhua took the lead in reporting silver phosphate photocatalysts with high-efficiency photodegradation of organic matter in the journal Nature Materials. On the basis of this literature, we provided three new types of silver phos...

Claims

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Application Information

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IPC IPC(8): B01J27/18C02F1/30C02F1/72
Inventor 宋立民韦庆梧叶佳义王艳兵
Owner TIANJIN POLYTECHNIC UNIV