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Preparation method and application of basalt fiber-TiO2 composite material

A technology of basalt fibers and composite materials, applied in chemical instruments and methods, light water/sewage treatment, physical/chemical process catalysts, etc., can solve problems such as poor sensitivity to visible light, difficult recovery of photocatalysts, and easy condensation, etc., to achieve Improve photolysis efficiency, low price, good flexibility

Active Publication Date: 2015-12-30
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on above-mentioned finding, the purpose of the present invention is to aim at current TiO 2 The photocatalyst is difficult to recycle, easy to condense in water, easy to deactivate, its photolysis is only effective in the ultraviolet region, and its sensitivity to visible light is not good. A preparation method for a new composite material of photodegradable organic matter is provided.

Method used

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  • Preparation method and application of basalt fiber-TiO2 composite material
  • Preparation method and application of basalt fiber-TiO2 composite material
  • Preparation method and application of basalt fiber-TiO2 composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 9 grams of nano-TiO according to a certain stoichiometric ratio (mass ratio of 9:1) 2 powder and 1 gram of chopped basalt fiber, first nano-TiO 2 Dissolve in deionized water, stir strongly for 30 minutes to obtain TiO 2 Nano sol, add chopped basalt fiber to 0.02mol / L NaOH solution, stir magnetically for 30min, then add TiO 2 Nano sol was added to the above liquid, and then magnetically stirred for 30 minutes to obtain basalt fiber-TiO 2 For the precursor of the composite material, add the prepared precursor into a 50mL stainless steel high-pressure reactor with a polytetrafluoroethylene liner, place it in a constant temperature drying oven at 120°C for 10 hours, control the reaction time, and cool to room temperature after the reaction , filtered, the product was ultrasonically rinsed with deionized water and absolute ethanol, and then dried in an oven at 80°C to obtain basalt fiber-TiO 2 composite photocatalyst.

Embodiment 2

[0028] Weigh 9 grams of nano-TiO according to a certain stoichiometric ratio (mass ratio of 9:1) 2 powder and 1 gram of chopped basalt fiber, first nano-TiO 2 Dissolve in deionized water, stir strongly for 30 minutes to obtain TiO 2 Nano sol, add chopped basalt fiber to 0.02mol / L NaOH solution, stir magnetically for 30min, then add TiO 2 Nano sol was added to the above liquid, and then magnetically stirred for 30 minutes to obtain basalt fiber-TiO 2 For the precursor of composite materials, add the prepared precursor into a 50mL stainless steel high-pressure reactor with a polytetrafluoroethylene liner, place it in a constant temperature drying oven at 150°C for 10 hours, control the reaction time, and cool to room temperature after the reaction , filtered, the product was ultrasonically rinsed with deionized water and absolute ethanol, and then dried in an oven at 80°C to obtain basalt fiber-TiO 2 composite photocatalyst.

Embodiment 3

[0030] Weigh 9 grams of nano-TiO according to a certain stoichiometric ratio (mass ratio of 9:1) 2 powder and 1 gram of chopped basalt fiber, first nano-TiO 2Dissolve in deionized water, stir strongly for 30 minutes to obtain TiO 2 Nano sol, add chopped basalt fiber to 0.02mol / L NaOH solution, stir magnetically for 30min, then add TiO 2 Nano sol was added to the above liquid, and then magnetically stirred for 30 minutes to obtain basalt fiber-TiO 2 For the precursor of composite materials, add the prepared precursor to a 50mL stainless steel high-pressure reactor with a polytetrafluoroethylene liner, place it in a constant temperature drying oven at 180°C for 10 hours, control the reaction time, and cool to room temperature after the reaction , filtered, the product was ultrasonically rinsed with deionized water and absolute ethanol, and then dried in an oven at 80°C to obtain basalt fiber-TiO 2 composite photocatalyst.

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Abstract

The invention relates to a preparation method of a basalt fiber-TiO2 composite material. The method comprises steps as follows: a certain amount of nano TiO2 is dissolved in deionized water, TiO2 nano-sol is prepared, chopped basalt fibers are added to a NaOH solution with certain concentration, then the TiO2 nano-sol and the solution are mixed and subjected to intense magnetic stirring, a precursor of the basalt fiber-TiO2 composite material is obtained, the prepared precursor is added to a stainless steel high-pressure hydrothermal reaction kettle provided with a polytetrafluoroethylene lining, and the basalt fiber-TiO2 composite photocatalytic material is prepared through one step by the aid of the hydrothermal reaction. The hydrothermal reaction method which is simple to operate is adopted, particulate TiO2 coatings evenly coat surfaces of the basalt fibers, and the TiO2-loaded basalt fiber composite material adopting the core-shell structure is prepared. The composite material is environment-friendly, long in service life and recyclable and is an efficient and cheap ecological environment material.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a basalt fiber-TiO 2 Preparation methods of composite materials and their applications. Background technique [0002] The energy crisis and environmental pollution brought about by the rapid development of social economy and industrial production are increasingly threatening the further development of human life and production. Building a clean, environmentally friendly renewable energy system and environmental pollution control technology has become a global concern Focus: Sunlight is an available clean energy. Photocatalytic technology can directly use sunlight to oxidize and degrade organic pollutants at room temperature. One of the cheap and feasible ways to solve the pollution problem. The key to photocatalytic technology research is to design and prepare high-efficiency catalysts that can make full use of sunlight. The existing photodegradable material TiO 2 ,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J35/06B01J35/10B01J21/16C02F1/30C02F1/32
Inventor 汪靖凯李可庆杨文焕
Owner INNER MONGOLIA UNIV OF SCI & TECH
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