Rod-shaped silver vanadate photocatalytic material and preparation method thereof

A catalytic material, a silver vanadate-like technology, is applied in the field of photocatalysis and achieves the effects of mild conditions, simple process and low reaction temperature

Inactive Publication Date: 2013-02-27
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on the special morphology of silver vanadate, so the res

Method used

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  • Rod-shaped silver vanadate photocatalytic material and preparation method thereof
  • Rod-shaped silver vanadate photocatalytic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Under vigorous stirring, the molar ratio of silver nitrate and ammonia water is 1: 8 mixed solution and sodium vanadate solution are simultaneously injected in the reaction pot containing gelatin and sodium vanadate aqueous solution with peristaltic pump, and the temperature of control reaction pot is 80 ℃, By controlling the injection speed of silver nitrate and sodium vanadate solution, the [VO in the reaction pot during the whole reaction process 4 3- ] is constant at 0.03mol / L. After the injection of the silver ammonia solution and the sodium vanadate solution is completed, physical maturation is carried out at this temperature for 30 minutes. The prepared silver vanadate microcrystals were centrifuged and washed 6 times with warm water at 45°C to remove gelatin protective agent, excess sodium vanadate and other impurities generated by the reaction. Preserve with gelatin. The obtained silver vanadate catalyst has a uniform rod-like morphology and has high photoca...

Embodiment 2

[0025] Under vigorous stirring, use a peristaltic pump to simultaneously inject the mixed solution of silver nitrate and ammonia water with a molar ratio of 1:8 and sodium vanadate solution into the reaction pot containing polyvinylpyrrolidone and sodium vanadate aqueous solution, and control the temperature of the reaction pot to be 80 ℃, by controlling the injection speed of silver nitrate and sodium vanadate solution, the [VO 4 3- ] Higher and constant at 0.03mol / L. After the injection of the silver ammonia solution and the sodium vanadate solution is completed, physical maturation is carried out at this temperature for 30 minutes. The prepared silver vanadate microcrystals were centrifuged and washed 6 times with warm water at 45°C to remove the gelatin protective agent, excess sodium vanadate and other impurities generated by the reaction, and were preserved with gelatin. The obtained silver vanadate catalyst has a uniform rod-like morphology and has a high photocatalyt...

Embodiment 3

[0027] Under vigorous stirring, use a peristaltic pump to simultaneously inject the mixed solution of silver nitrate and ammonia water with a molar ratio of 1:8 and sodium vanadate solution into the reaction pot containing polyvinyl alcohol and sodium vanadate aqueous solution, and control the temperature of the reaction pot to 80°C , by controlling the injection speed of silver nitrate and sodium vanadate solution, the [VO in the reaction pot during the whole reaction process 4 3- ] Higher and constant at 0.03mol / L. After the injection of the silver ammonia solution and the sodium vanadate solution is completed, physical maturation is carried out at this temperature for 30 minutes. The prepared silver vanadate microcrystals were centrifuged and washed 6 times with warm water at 45°C to remove gelatin protective agent, excess sodium vanadate and other impurities generated by the reaction. Preserve with gelatin. The obtained silver vanadate catalyst has a uniform rod-like mo...

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Abstract

The invention relates to a rod-shaped silver vanadate photocatalytic material and a preparation method thereof. The photocatalytic material is formed by the component of: rod-shaped silver vanadate crystallites. The preparation method comprises the following steps: (1) carrying out a dual-injection precipitation method to prepare the rod-shaped silver vanadate crystallites in the presence of a polymer protective agent; (2) washing by warm water in order to remove the polymer protective agent and inorganic salt; and (3) storing the silver vanadate crystallites by gelatin. According to the preparation method, the preparation process is simple, condition is mild and the post-processing is convenient, so that the method is suitable for being carried out to prepare the rod-shaped silver vanadate photocatalytic material.

Description

technical field [0001] The invention relates to a novel photocatalytic material with a special shape and a preparation method thereof, belonging to the technical field of photocatalysis. Background technique [0002] In the 21st century, global environmental pollution and energy crisis have become more prominent, which has seriously threatened the survival and development of human beings, and has become a bottleneck restricting the sustainable development of countries all over the world. How to degrade the increasingly serious environmental pollution and energy pollution has become the top priority of the governments of all countries and needs to be solved urgently. [0003] Since titanium dioxide showed the conversion ability between photoelectrochemistry and solar energy in 1969, this semiconductor material immediately attracted widespread attention from the academic community. Nano-titanium dioxide can use sunlight to completely degrade most organic pollutants in the env...

Claims

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Application Information

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IPC IPC(8): B01J23/68B01J35/02C02F1/30
CPCY02W10/37
Inventor 田宝柱王婷婷熊天庆张金龙杨钒陈星李艺茹
Owner EAST CHINA UNIV OF SCI & TECH
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