Preparation method of silver phosphate-compounded bismuth phosphate photocatalyst

A composite bismuth phosphate and photocatalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of unstable components of silver phosphate photocatalysts, reduced catalyst degradation performance, and high production costs. , to achieve the effect of improving photocatalytic efficiency, stable composition and low cost

Inactive Publication Date: 2018-06-01
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silver compound photocatalyst has the advantages of large absorption range and has been widely valued by scientists. However, the composition of silver phosphate

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  • Preparation method of silver phosphate-compounded bismuth phosphate photocatalyst

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Example Embodiment

[0018] Example 1

[0019] The preparation method of the silver phosphate composite bismuth phosphate photocatalyst includes the following steps:

[0020] S1: Preparation of silver phosphate: add 4 parts of silver nitrate to 80 parts of distilled water, oscillate with ultrasonic waves at room temperature, slowly add dilute ammonia water under stirring, start to produce brown precipitate, and then stop adding dilute ammonia water when the precipitate is dissolved. The concentration of ammonia water is 1.2mol / L, the adding rate of the dilute ammonia water is 3 drops / sec, the stirring is accelerated, the speed of the accelerated stirring is 300 revolutions / min, the stirring time is 10 minutes, and 140 parts of 0.2mol / L are added Continue stirring for 1.6 hours. Centrifuge and filter to obtain the precipitate. Wash 4 times. The washing method is to use deionized water and absolute ethanol for cleaning, drying, and drying at a vacuum of 80 Celsius, get silver phosphate;

[0021] S2: Prep...

Example Embodiment

[0023] Example 2

[0024] The preparation method of the silver phosphate composite bismuth phosphate photocatalyst includes the following steps:

[0025] S1: Preparation of silver phosphate: Add 3 parts of silver nitrate to 75 parts of distilled water, oscillate with ultrasonic waves at room temperature, and slowly add dilute ammonia under stirring to start to form a brown precipitate, and then when the precipitate is dissolved, stop adding dilute ammonia. The concentration of ammonia water is 1mol / L, the adding rate of the dilute ammonia water is 2 drops / sec, the stirring is accelerated, the speed of the accelerated stirring is 250 revolutions / min, the stirring time is 8 minutes, and then 120 parts of 0.15 mol / L are added Sodium hydrogen phosphate, continue to stir, stirring time is 1.2 hours, centrifuge, filter, get the precipitate, wash 3 times, washing method is to use deionized water and absolute ethanol for cleaning, drying, drying temperature is vacuum 70 degrees Celsius , ...

Example Embodiment

[0028] Example 3

[0029] The preparation method of the silver phosphate composite bismuth phosphate photocatalyst includes the following steps:

[0030] S1: Preparation of silver phosphate: add 2 parts of silver nitrate to 50 parts of distilled water, oscillate with ultrasonic waves at room temperature, slowly add dilute ammonia with stirring, start to form brown precipitate, and then stop adding dilute ammonia when the precipitate is dissolved. The concentration of ammonia water is 0.8 mol / L, the adding rate of the dilute ammonia water is 1 drop / second, the stirring is accelerated, the speed of the accelerated stirring is 200 rpm, the stirring time is 6 minutes, and then 100 parts of 0.1 mol / L are added Sodium hydrogen phosphate, continue to stir, stirring time is 0.8 hours, centrifuge, filter, get the precipitate, wash twice, washing method is to use deionized water and absolute ethanol for cleaning, drying, drying temperature is vacuum 60 Celsius, get silver phosphate;

[0031]...

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Abstract

The invention discloses the technical field of photocatalysts, and particularly discloses a preparation method of a silver phosphate-compounded bismuth phosphate photocatalyst, the preparation methodof the silver phosphate-compounded bismuth phosphate photocatalyst comprises the following steps of S1, preparing of silver phosphate; S2, preparing of bismuth phosphate; S3, preparing of silver phosphate-compounded bismuth phosphate: adding the silver phosphate prepared in S1 into the bismuth phosphate prepared in S2 according to a weight ratio of 10:1, stirring for 1 to 2h at the rotation speedof 40 to 50 revolutions per minute, and standing for 4 to 6 days, so as to obtain the silver phosphate-compounded bismuth phosphate. The preparation method of the silver phosphate-compounded bismuth phosphate photocatalyst has the advantages that the synergistic effect is realized by the silver phosphate and the bismuth phosphate, the photocatalytic efficiency is greatly improved, the components are stable, the preparation technology is simple, the cost is lower, and the silver phosphate-compounded bismuth phosphate photocatalyst can be widely applied to the fields of pollutant degrading and photocatalytic water degrading.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, in particular to a method for preparing silver phosphate composite bismuth phosphate photocatalysts. Background technique [0002] In the popular sense, catalyst means catalyst, and photocatalyst, as the name implies, is photocatalyst. A catalyst is a chemical substance that changes the rate of a chemical reaction without itself participating in the reaction. Photocatalyst is a general term for chemical substances that can play a catalytic role under the excitation of photons. Environmental pollution and energy shortage are two major problems plaguing human beings at present. In order to solve these two problems, the application of photocatalytic technology was born. The advantage of photocatalytic technology is that it can use sunlight to directly decompose water vapor and organic pollutants in the air. It is mineralized into carbon dioxide and water, which can achieve the purpose of en...

Claims

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Application Information

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IPC IPC(8): B01J27/186C02F1/30
CPCB01J27/186B01J35/004C02F1/30C02F2305/10
Inventor 陆彩云尹正风石磊余宗宝
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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