Preparation method of natural zeolite loaded one-dimensional TiO2 nanowire with high catalytic activity

A high catalytic activity, natural zeolite technology, applied in the field of preparation of high catalytic activity natural zeolite loaded one-dimensional TiO2 nanowire composite materials, can solve the problems of composite specific surface area reduction, unfavorable organic adsorption and degradation, etc., to improve photocatalytic activity , easy to control, easy to control effects

Inactive Publication Date: 2015-04-01
TIANJIN CHENGJIAN UNIV
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Problems solved by technology

[0006] The main problem at present is: in the traditional zeolite loaded TiO 2 In the nanoparticle photocatalytic system, the degradation of organic matter mainly comes from the adsorption of zeolite and TiO 2 photocatalytic effect, while the surface of zeolite supports TiO 2 After adding nanoparticles, the specific surface area of ​​the composite tends to decrease, which is not conducive to the adsorption and degradation of organic matter

Method used

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Embodiment

[0028] TiO 2For the preparation of the sol, the concentration of butyl titanate was 0.6, the molar ratio of diethanolamine to butyl titanate was 1:1, the ratio of water to absolute ethanol was 1:10, and the absolute ethanol solvent was 50ml. For acid treatment of natural zeolite, wash the natural zeolite repeatedly with deionized water until the supernatant is clear, add the washed zeolite to 0.3mol / L hydrochloric acid, stir for 4 hours under the condition of 93°C water bath, and use deionized water to Acid-treated zeolite for washing to remove Cl - , The resultant was dried at 110°C for 12h, and then calcined at 550°C for 4 hours. Natural zeolite supported nano-TiO 2 Preparation, put acid-treated zeolite into TiO 2 In the sol, stir in a water bath at 70°C until TiO 2 TiO will be loaded until the sol turns into a gel 2 The zeolite was dried at 90°C for 12 hours, and the above operation was repeated to load TiO again 2 , will load 2 times TiO 2 The zeolite was heat-treat...

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Abstract

The invention belongs to the technical field of photocatalysis, and in particular to a preparation method of natural zeolite loaded one-dimensional TiO2 nanowire with high catalytic activity and related technological parameters. The preparation method is a sol-gel / hydrothermal synthesis method and comprises steps of: first preparing a TiO2 sol from a precursor butyl titanate (Ti (OC4H9) 4), a complexing agent diethanol amine and a solvent absolute ethyl ethanol; then, loading the TiO2 sol on acid treated natural zeolite by an immersion method, drying and calcining; and finally, placing the zeolite loaded with TiO2 in a NaOH aqueous solution, and conducting a hydrothermal reaction at a certain temperature; washing the obtained product with deionized water, and dipping the product in a dilute HCl solution for a while; and then washing, drying and calcining the obtained product to obtain a natural zeolite loaded one-dimensional nano TiO2 composite material. The invention also discusses influence of technological parameters including sol precursor concentration, TiO2 loading amount and calcination time on the structure and properties of the composite material, and acquires the optimum technological parameters for preparation of the natural zeolite loaded one-dimensional TiO2 nanowire with high catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, in particular to a method for preparing high catalytic activity natural zeolite supported one-dimensional TiO 2 Methods and associated process parameters for nanowire composites. technical background [0002] Water is the source of life and a necessary condition for the existence of life. Human life, industrial production, and agricultural irrigation are all inseparable from water. With the rapid development of the modern economy, many human activities have caused a large amount of industrial, agricultural and domestic wastes to be discharged into the water, causing the water body to be polluted. The pollution of water resources not only deteriorates the whole earth's ecology, but also poses a huge harm to human health. Therefore, water pollution control, as an important topic in the field of environmental protection, has received worldwide attention. However, the existing main methods...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/06B01J35/10
Inventor 鄂磊刘志锋雅菁
Owner TIANJIN CHENGJIAN UNIV
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