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Prepn process of photocatalytic microball for environment treatment

A technology of photocatalysis and microspheres, applied in the field of preparation of photocatalytic composite microspheres, can solve problems such as high cost, waste of space, occupation, etc., and achieve the effects of improving light application efficiency, good separation and recovery performance, and wide application range.

Inactive Publication Date: 2006-10-18
海安县拜坡纳米材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the above (1)(2) method of loading nano-photocatalytic materials on the surface of large particles, most of the space in the system is occupied by materials that do not have photocatalytic activity, which not only causes waste of space, but also affects the efficiency of light application, making the sewage treatment per unit space The effect is low; although the method of (3) improves the photocatalytic treatment efficiency, the difficulty of nano-dispersion recovery leads to high cost and cannot be practically applied

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, concrete steps are as follows:

[0018] A. 50 grams of nano-titanium dioxide of about 10 nanometers are dispersed in 50 grams of aqueous ethanol (1: 1 volume ratio);

[0019] B. Slowly add 2.5 grams of KH550 under stirring conditions, then add 30 grams of potassium silicate, 2 grams of styrene-acrylic resin, and then heat and dry at 120 ° C for 2 hours to obtain a block-shaped dry product;

[0020] C. Grind the blocky dry product to the required size, and sieve to obtain particles of a certain size;

[0021] The microparticles have good photocatalytic activity and good solvent separation properties.

Embodiment 2

[0023] The difference between embodiment 2 and embodiment 1 is that 50 grams of nano-titanium dioxide is replaced with 40 grams of nano-titanium dioxide and 10 grams of nano-zinc oxide, and other conditions are the same. Finally get nano TiO 2 -Zn photocatalytic composite, with visible light catalytic activity and good solvent separation.

Embodiment 3

[0025] The difference between Example 3 and Example 1 is that 50 grams of nano-titanium dioxide in Example 1 is replaced by 50 grams of ferric ion hybridized nano-titanium dioxide, and other conditions are the same. Finally get nano TiO 2 -Fe composite photocatalytic particles, with visible light catalytic activity and good solvent separation.

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Abstract

The present invention discloses the preparation process of photocatalytic microballoon for environment treatment. The photocatalytic microballoon is prepared with nanometer titania with photocatalytic activity, zinc oxide and composite photocatalytic material as basic material, and through cross-linking reaction with organic-inorganic composite cross-linking agent to form cross-linked microballoon with both high adsorption and photocatalytic performance. It has certain space size for easy separation and recovery and high photocatalytic environment treating efficiency.

Description

technical field [0001] The invention relates to a preparation method of nanomaterial photocatalytic microspheres, in particular to a preparation method of photocatalytic composite microspheres applied to environmental treatment. Background technique [0002] Photocatalytic nanomaterials mainly refer to nano-titanium dioxide and nano-zinc oxide semiconductor materials, among which nano-titanium dioxide is the most important research object. Since 1976, Carey et al. used TiO 2 Since the photocatalytic degradation of biphenyl and chlorinated biphenyl, the photocatalytic technology based on titanium dioxide has attracted widespread attention at home and abroad. [0003] To make TiO 2 Photocatalytic materials have been practically applied in environmental protection, especially in the field of sewage treatment. People have adopted a variety of methods, mainly including: [0004] (1) TiO 2 Photocatalytic thin film: using the sol-gel method, the TiO 2 The photocatalytic materia...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J23/06B01J35/08B01J37/00
Inventor 钱素娟钱志军范振天刘书朋陈广进
Owner 海安县拜坡纳米材料有限公司