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Preparation method of glass fiber loaded silver-silver bromide-titanium oxide composite material

A glass fiber and composite material technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as difficult recycling and low composite efficiency

Active Publication Date: 2014-02-26
中科瑞丽分离科技无锡有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting novel surface plasmon Ag-AgBr-TiO 2 / Glass fiber composites combine the surface plasmon resonance effect of noble metals, the characteristics of metal-semiconductor contacts and semiconductor photocatalysis, and effectively solve the problem of TiO 2 Photocatalytic materials have low composite efficiency and are not easy to recycle, etc., and have high visible light photocatalytic performance

Method used

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  • Preparation method of glass fiber loaded silver-silver bromide-titanium oxide composite material
  • Preparation method of glass fiber loaded silver-silver bromide-titanium oxide composite material
  • Preparation method of glass fiber loaded silver-silver bromide-titanium oxide composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] a. Add 0.05M isopropyl titanate to 1M sulfuric acid solution and mix well;

[0022] b. Add 3g of E-glass fiber in short fiber form to the solution obtained in step a, heat up to 110°C, react for 6 hours, adjust the pH value to 7 with concentrated ammonia solution, and after aging for 12 hours, wash and dry to obtain a composite Material;

[0023] c. Add 0.6g polyvinylpyrrolidone to 0.05M ethylene glycol solution containing silver nitrate to obtain a mixed solution, impregnate the composite material obtained in step b into the mixed solution, and then add 0.05M ethylene glycol solution containing potassium bromide After mixing the diol solution evenly, heat it to a temperature of 50°C and keep it warm for 3 hours. After washing the product alternately with deionized water and ethanol, the threaded glass fiber loaded AgBr-TiO can be obtained. 2 Composite photocatalytic materials;

[0024] d. Load the threaded glass fiber with AgBr-TiO 2 The composite material was dispe...

Embodiment 2

[0026] a. Add 0.15M titanium tetrachloride to 1M sulfuric acid solution and mix well;

[0027] b. Add 3 g of C-glass fibers in bundled form to the solution obtained in step a, raise the temperature to 110°C, react for 6 hours, adjust the pH value to 7 with concentrated ammonia solution, and age for 12 hours, wash and dry to obtain a composite Material;

[0028] c. Add 2g of polyvinylpyrrolidone to 0.05M ethylene glycol solution containing silver nitrate to obtain a mixed solution, impregnate the composite material obtained in step b into the mixed solution, and then add 0.05M ethylene glycol containing potassium bromide After mixing the solution evenly, heat it to a temperature of 80°C and keep it warm for 2 hours. After washing the product alternately with deionized water and ethanol, the threaded glass fiber loaded AgBr-TiO can be obtained. 2 Composite photocatalytic materials;

[0029] d. Load the threaded glass fiber with AgBr-TiO 2 The composite material was dispersed ...

Embodiment 3

[0031] a. Add 0.02M ammonium fluotitanate to 1M sulfuric acid solution and mix well;

[0032] b. Add 3g of non-woven fabric AR-glass fiber to the solution obtained in step a, raise the temperature to 110°C, react for 6 hours, adjust the pH value to 7 with concentrated ammonia solution, and after aging for 12 hours, wash and dry to obtain composite materials;

[0033] c. Add 3g of polyvinylpyrrolidone to 0.05M ethylene glycol solution containing silver nitrate to obtain a mixed solution, dip the composite material obtained in step b into the mixed solution, and then add 0.05M ethylene glycol solution containing potassium bromide Alcohol solution, after mixing evenly, heat to a temperature of 150°C and keep it warm for 1 hour. After washing the product alternately with deionized water and ethanol, the threaded glass fiber loaded AgBr-TiO can be obtained. 2 Composite photocatalytic materials;

[0034] d. Load the threaded glass fiber with AgBr-TiO 2 The composite material is d...

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Abstract

The invention provides a preparation method of a glass fiber loaded silver-silver bromide-titanium oxide composite material. The method comprises the following steps: with an organic or inorganic titanium compound as a titanium source and glass fibers as a carrier, obtaining a spherical titanium dioxide (TiO2) nano particle loaded threaded glass fiber composite material by a hydrolysis method under an acidic condition; impregnating the composite material in an ethylene glycol solution containing silver nitrate, and subsequently, adding dropwise an ethylene glycol solution containing potassium bromide to generate an AgBr-TiO2 / glass fiber composite material; and finally, reducing partial Ag<+1> in the AgBr-TiO2 / glass fiber composite material into metal Ag, thus obtaining an Ag-AgBr-TiO2 / glass fiber composite photocatalyst. The method provided by the invention realizes even loading of a nano-material having visible light catalytic activity on the surface of the threaded glass fibers by a two-step method; the method has the advantages of simple and convenient operation, easy large-scale production and the like; the obtained Ag-AgBr-TiO2 / glass fiber composite material has relatively high visible light catalytic activity.

Description

technical field [0001] The invention belongs to the field of environmental materials, in particular to a threaded glass fiber loaded Ag-AgBr-TiO with visible light photocatalytic activity and renewable use 2 Methods of preparation of composite materials. Background technique [0002] The treatment of environmental pollutants is a major concern of human beings at present, and the development of new and practical environmental protection technologies has always been one of the hot topics for researchers. The removal of pollutants in the environment can be achieved by methods such as catalytic combustion, chemical oxidation, and biodegradation, but the above methods have certain limitations: such as high equipment and operating costs, low removal efficiency, and secondary pollution during the treatment process, etc. , so these traditional methods are difficult to meet the technical and economic requirements of pollutant removal. In recent decades, people have found that semic...

Claims

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Application Information

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IPC IPC(8): B01J27/08
Inventor 马鹏程陈琳杨苏东
Owner 中科瑞丽分离科技无锡有限公司
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