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Nano Titanium dioxide/fluorite photocataly tic material and preparation process thereof

A nano-titanium dioxide, composite photocatalysis technology, applied in chemical instruments and methods, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of secondary pollution, weak interaction force, difficult separation and purification, etc.

Inactive Publication Date: 2006-01-25
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, in the composites prepared by mechanical mixing, TiO 2 The interaction force with zeolite is weak, nano-TiO 2 In the catalytic process, it will be gradually separated from the matrix zeolite, which is difficult to separate and purify in actual use, and will introduce secondary pollution

Method used

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  • Nano Titanium dioxide/fluorite photocataly tic material and preparation process thereof
  • Nano Titanium dioxide/fluorite photocataly tic material and preparation process thereof
  • Nano Titanium dioxide/fluorite photocataly tic material and preparation process thereof

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Embodiment 1

[0020] Embodiment 11: Taking Example 1 as an example, the specific preparation process is as follows: weigh 1g of ZSM-5 zeolite with a silicon-aluminum ratio of 20, add 3ml of 5% dilute ammonia water, stir well and let stand at room temperature for 30min, add 2g TiCl solution (15% ), stir well, dry at 100°C, and bake in a muffle furnace at 550°C for 2h.

Embodiment 12

[0021] Example 12: Catalytic reaction of phenol UV self-degradation. Weigh the active material TiO 2 Put 50mg of the corresponding quality composite material in the catalytic reactor, add 100mL of phenol solution with a concentration of 100ppm, stir evenly, keep the temperature at 30°C, and degrade spontaneously under the irradiation of a UV lamp with a main wavelength of 365nm, take samples at regular intervals, and use a UV spectrophotometer at a wavelength of 270nm Detect the residual phenol concentration in the reaction solution.

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Abstract

A composite nano-TiO2 / zeolite photo-catalyst is prepared from zeolite as basic material and soluble Ti salt as precursor through immersing the zeolite molecular sieve with different skeletons in the solution containing Ti ions, drying by evaporating and calcination. It has the crystal phases of anatase and rutile, and controllable high catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a surface-supported crystal-phase-controllable nano-titanium dioxide / zeolite composite photocatalytic material and a preparation method thereof. Background technique [0002] Many metal oxides have unique electrical, optical, magnetic and chemical characteristics, and are widely used in information storage, sensors, catalysis, photovoltaic cells and other technical fields. When the particles of these metal oxides are in nanometer size, many properties of them are qualitatively changed, which provide a broad space for the application of new technologies (Adv. Funct. Mater. 2003, 13, 9.). Among them, titanium dioxide, as a typical semiconductor material, has the characteristics of high photocatalytic activity, non-toxicity to organisms, and abundant sources, and is currently the most promising photocatalyst. [0003] There have been many literature reports...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J29/40
Inventor 汪靖程晓维徐孝文龙英才
Owner FUDAN UNIV
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