Preparation method of nano silver phosphate photocatalyst

A catalyst, phosphoric acid technology, applied in the field of photocatalyst, can solve the problems of easy photocorrosion and weak photocatalytic stability of a single material, and achieve the effect of improving photocatalytic degradation performance, stable catalytic performance and high catalytic activity

Inactive Publication Date: 2022-02-18
GUANGXI TEACHERS EDUCATION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silver phosphate is slightly soluble in water, and it is prone to photocorrosion under light. The photocatalytic stability of its single material is not strong, and it needs to be combined with other materials.

Method used

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  • Preparation method of nano silver phosphate photocatalyst
  • Preparation method of nano silver phosphate photocatalyst
  • Preparation method of nano silver phosphate photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Mix 0.27g of iron powder with 0.67g of trimesic acid, then add 150ml of nitric acid and hydrofluoric acid mixed solution, wherein the volume mixing ratio of nitric acid and hydrofluoric acid is 3:2, put it in a drying oven and keep a constant temperature Dry at 140°C for 18 hours to obtain a solid powder. After alternately washing with ethanol and deionized water for 2 hours, put it in a drying oven at 80°C for 6 hours to obtain a metal-organic framework material MIL-100(Fe);

[0031] Get 1g of silver nitrate and dissolve it in 80ml of deionized water to obtain a silver nitrate solution, then add dropwise a 10wt% ammonia solution by weight at a rate of 0.5ml / min to obtain a silver ammonia solution;

[0032] Dissolve 0.5 g of disodium hydrogen phosphate dodecahydrate in 80 ml of deionized water, then add 0.1 g of molybdenum trioxide, and perform ultrasonic treatment for 15 minutes to obtain a mixed solution A;

[0033] The prepared silver ammonia solution was gradually a...

Embodiment 2

[0073] Mix 0.3g of iron powder with 0.74g of trimesic acid, then add 150ml of nitric acid and hydrofluoric acid mixed solution, wherein the volume mixing ratio of nitric acid and hydrofluoric acid is 3:2, put it in a drying oven and keep a constant temperature Dry at 180°C for 24 hours to obtain a solid powder. After alternately washing with ethanol and deionized water for 2 hours, put it in a drying oven at 80°C for 6 hours to obtain a metal-organic framework material MIL-100(Fe);

[0074] Get 3g of silver nitrate and dissolve it in 100ml of deionized water to obtain a silver nitrate solution, then add dropwise a 10wt% ammonia solution by weight at a rate of 0.5ml / min to obtain a silver ammonia solution;

[0075] Dissolve 0.8g of disodium hydrogen phosphate dodecahydrate in 100ml of deionized water, then add 0.2g of molybdenum trioxide, and perform ultrasonic treatment for 30min to obtain mixed solution A;

[0076] The prepared silver ammonia solution was gradually added drop...

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Abstract

The invention discloses a preparation method of a nano silver phosphate photocatalyst, the preparation method comprises the following steps: mixing iron powder with trimesic acid, adding nitric acid and hydrofluoric acid, drying, washing and drying to obtain MIL-100 (Fe); dissolving silver nitrate in deionized water to obtain a silver nitrate solution, and dropwise adding ammonia water to obtain a silver ammonia solution; dissolving disodium hydrogen phosphate dodecahydrate in deionized water, adding molybdenum trioxide, and carrying out ultrasonic treatment to obtain a mixed solution A; dropwise adding a silver-ammonia solution into the mixed solution A, stirring to obtain a mixed precipitate, and washing and drying to obtain a sample B; dissolving the sample B in absolute ethyl alcohol, adding MIL-100 (Fe), and stirring to obtain a mixture C; and putting the mixture C into a drying box, and drying to obtain the nano MIL-100 (Fe), silver molybdate and silver phosphate composite photocatalyst. The photocatalytic degradation performance of silver phosphate is effectively improved, and the prepared composite photocatalyst is high in catalytic activity and stable in catalytic performance.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst, relates to the preparation technology of photocatalyst, in particular to a preparation method of nanometer silver phosphate photocatalyst. Background technique [0002] Photocatalyst, also called photocatalyst, can be used to decompose organic compounds, some inorganic compounds, bacteria and viruses. In daily life, photocatalyst can effectively degrade toxic and harmful gases in the air such as formaldehyde, and purify the air efficiently; at the same time, it can effectively kill a variety of bacteria, and can decompose and harmlessly treat the toxins released by bacteria or fungi. [0003] Silver phosphate is an inorganic substance, soluble in acid, potassium cyanide solution and ammonia water, slightly soluble in water and dilute acetic acid. Because of its strong photooxidation and efficient photocatalytic degradation of organic pollutants, it can be used to make photocatalysts for en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22B01J31/34C02F1/30C02F101/38
CPCB01J35/004B01J31/2239B01J31/34C02F1/30B01J2531/842C02F2305/10C02F2101/38C02F2101/40
Inventor 周杨杨晶韦良韦志赢杨显德覃小喜
Owner GUANGXI TEACHERS EDUCATION UNIV
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