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Lead phosphate and silver phosphate composite photocatalyst and preparation method thereof

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

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

AI Technical Summary

Problems solved by technology

At present, the photocatalytic semiconductor that can be applied on a large scale is titanium dioxide, but titanium dioxide can only be excited by ultraviolet light, so it is a great challenge to develop new photocatalysts with visible light response

Method used

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  • Lead phosphate and silver phosphate composite photocatalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0013] Dissolve 0.001mol of lead nitrate in 90mL of 1mol / L silver ion aqueous solution; slowly drop 30mL of sodium phosphate aqueous solution into the silver ion solution; stir vigorously for 20min; suction filter the resulting precipitate, wash it with distilled water and absolute ethanol in turn, and then 80 °C and dried in vacuum for 6 hours to obtain lead phosphate silver phosphate photocatalyst.

Embodiment approach 2

[0015] The silver nitrate in embodiment 1 is replaced by silver acetate, and other conditions are unchanged.

Embodiment approach 3

[0017] The sodium phosphate in Embodiment 1 is replaced by ammonium phosphate, and other conditions remain unchanged.

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Abstract

The invention relates to a lead phosphate and silver phosphate composite photocatalyst and a preparation method thereof, and belongs to the field of inorganic photocatalytic materials. The lead phosphate and silver phosphate composite photocatalyst comprises lead phosphate and silver phosphate. The photocatalyst prepared through the method has photocatalytic activity in the wavelength range from 400 to 800nm, and can catalyze and oxidize organic compounds in radiation of visible light or natural light so that the organic compounds are mineralized into non-toxic and harmless small-molecule matter.

Description

technical field [0001] The invention relates to a photocatalyst. [0002] The present invention also relates to a preparation method of the above-mentioned photocatalyst. [0003] The present invention also relates to the use of the photocatalyst described above. Background technique [0004] Photocatalytic technology uses the inexhaustible and inexhaustible sunlight as an energy source to catalyze the oxidation of organic pollutants to mineralize them into non-toxic and harmless substances. This makes the technology low-cost and does not pollute the environment, nor cause consumption and waste of non-renewable energy. Due to these outstanding advantages, photocatalytic technology has become one of the hotspots of researchers in the fields of chemistry, physics, materials, and environment. At present, the photocatalytic semiconductor that can be applied on a large scale is titanium dioxide, but titanium dioxide can only be excited by ultraviolet light, so it is a great ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18
Inventor 宋立民贺配芝李亚淼
Owner TIANJIN POLYTECHNIC UNIV
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