Preparation method for functional wood capable of degrading organic pollutants through photocatalysis

A technology of organic pollutants and photocatalysis, applied in the field of photocatalytic materials, can solve the problems of loss of nano effect, easy aggregation of nanoparticles, and reduction of specific surface area, etc., and achieve strong catalytic degradation ability, good degradation ability, and good degradation effect Effect

Active Publication Date: 2017-03-15
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the doping process, nanoparticles are easy to aggregate, thereby reducing the specific surfac

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  • Preparation method for functional wood capable of degrading organic pollutants through photocatalysis

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Example Embodiment

[0031] Example 1:

[0032] An embodiment of the method for preparing functional wood capable of photocatalytic degradation of organic pollutants according to the present invention, the method for preparing functional wood includes the following steps:

[0033] (1) Treat the sawn poplar wood (length, height and width respectively: 100mm×10mm×100mm) in 5% potassium hydroxide solution under 600W power for 6h to open up the pores in the wood. The hydroxyl groups on the surface of the wood are exposed. After ultrasonic treatment, the wood is washed with deionized water, and then the wood is dried under vacuum.

[0034] (2) Weigh out 0.01mol Bi(NO 3 ) 3 .5H 2 O was dissolved in 100 ml of glacial acetic acid solution with a mass fraction of 10%, and vinyl tris (methoxyethoxy) silane coupling agent was added, and the mixture was fully stirred at room temperature to obtain a mixed solution. Among them, the added amount of the vinyl tris (methoxyethoxy) silane coupling agent is 1% of the mass...

Example Embodiment

[0039] Example 2:

[0040] An embodiment of the method for preparing functional wood capable of photocatalytic degradation of organic pollutants according to the present invention. The method for preparing functional wood includes the following steps:

[0041] (1) Treat the sawn poplar wood (length, height and width respectively: 150mm×120mm×150mm) under a 15kW microwave for 50s to open up the pores in the wood and expose the hydroxyl groups on the wood surface, and then pass through The microwave-treated wood is sawed into a test piece of 100mm×10mm×100mm for use.

[0042] (2) Weigh out 0.01mol Bi(NO 3 ) 3 .5H 2 O is dissolved in 100 ml of glacial acetic acid solution with a mass fraction of 10%, and vinyl trimethoxysilane coupling agent is added, and the mixture is fully stirred at room temperature to obtain a mixed solution. Wherein, the added amount of the vinyl trimethoxysilane coupling agent is 1% of the mass of the mixed solution.

[0043] (3) Weigh 0.004 mol of KI and 0.006 m...

Example Embodiment

[0047] Example 3:

[0048] An embodiment of the method for preparing functional wood capable of photocatalytic degradation of organic pollutants according to the present invention. The method for preparing functional wood includes the following steps:

[0049] An embodiment of the method for preparing functional wood capable of photocatalytic degradation of organic pollutants according to the present invention. The method for preparing functional wood includes the following steps:

[0050] (1) Treat the sawn poplar wood (length, height and width respectively: 150mm×120mm×150mm) under a 20kW microwave for 40s to open up the pores in the wood and expose the hydroxyl groups on the wood surface, and then pass it through The microwave-treated wood is sawed into a test piece of 100mm×10mm×100mm for use.

[0051] (2) Weigh 0.02mol Bi(NO 3 ) 3 .5H 2 O was dissolved in 100 ml of glacial acetic acid solution with a mass fraction of 10%, vinyl triethoxy silane coupling agent was added, and the m...

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Abstract

The invention discloses a preparation method for functional wood capable of degrading organic pollutants through photocatalysis. The preparation method comprises the following steps that wood is subjected to pretreatment, internal pores of the wood are gotten through, and hydroxyl on the surface of the wood is exposed; bismuth nitrate is taken to be dissolved in an acid solution, then, coupling agents are added, stirring is conducted, and a mixed solution is obtained; soluble iodized salts and soluble chlorate are taken to be dissolved in water, stirring is conducted for dissolving, and a halide salt solution is obtained; the pretreated wood is soaked into the mixture solution, subjected to pressurized soaking, taken out and dewatered, and the wood adsorbed with bismuth ions is obtained; the wood adsorbed with the bismuth ions is soaked into the halide salt solution, subjected to pressurized soaking, taken out and subjected to vacuum drying, and then the functional wood capable of degrading the organic pollutants through photocatalysis can be obtained. The functional wood prepared through the method is high in light use ratio, can effectively degrade the organic pollutants under visible light radiation and is good in degradation effect.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a method for preparing functional wood capable of photocatalytically degrading organic pollutants. Background technique [0002] With the rapid development of industry, harmful gases emitted by factories and automobile exhaust emissions have caused a sharp decline in air quality. It is of great significance to develop materials that can effectively remove harmful organic compounds in the air. Photocatalytic degradation plays an important role in solving environmental problems due to its environmental protection and no secondary pollution. As a new type of semiconductor catalyst, BiOCl has a unique layered structure and a large band gap (3.46eV). Effective photocatalytic degradation of organic pollutants. [0003] However, due to the wide band gap of BiOCl, it can only respond to ultraviolet light which accounts for only about 4% of sunlight, which greatly redu...

Claims

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Application Information

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IPC IPC(8): B27K3/02B27K3/08B27K3/52B27K5/04B27K3/20B01D53/88B01D53/72
CPCB01D53/8668B01D53/88B01D2257/7027B01D2257/708B27K3/0207B27K3/08B27K3/20B27K3/52B27K5/04
Inventor 吴义强田翠花卿彦李新功李贤军罗莎
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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