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Composite photocatalyst material equipped with high activity under natural light and preparation thereof

A composite photocatalysis and natural light technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve unfavorable industrial production, difficult implementation conditions, complex processes, etc. problem, to achieve the effect of simple method, low cost and high photocatalytic activity

Inactive Publication Date: 2008-06-18
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings that the preparation of the current high-activity photocatalytic material needs to be carried out through the sol-gel method, the implementation conditions are difficult to control, the process is relatively complicated, it is not conducive to industrial production, and it is necessary to provide additional ultraviolet light equipment, etc., and the conventional emulsion is used Polymerization, simple method, low cost, is conducive to industrial production, and enables photocatalytic materials to obtain higher photocatalytic activity under natural light, thereby expanding the scope of use of its photocatalytic application and saving energy more effectively

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Add 10 parts of titanium oxide, 0.1 part of silane coupling agent, and 90 parts of ethanol into a reaction kettle equipped with a thermometer, a stirrer and a reflux condenser, raise the temperature to 65 ° C, and stir at a speed of 300 rpm for 2 hours. 5 parts of pretreated titanium oxide, 0.1 part of octylphenol polyoxyethylene (10) ether, 1 part of sodium lauryl sulfate, and 80 parts of deionized water are premixed and ultrasonically dispersed 2min, with a power of 250w, quickly transfer the mixture into a reaction kettle with a stirrer and a reflux condenser, raise the temperature to 55°C, and the rotation speed is 200rpm, then add 0.15 parts of sodium persulfate, 2 parts of methyl methacrylate and After mixing 0.9 parts of acrylonitrile, slowly add it dropwise into the reaction kettle, continue to heat up to 70°C, rotate at 200rmp, react for 3 hours, cool down and discharge the material, and naturally precipitate overnight. , repeated washing with N-dime...

Embodiment 2

[0019] Example 2: Add 10 parts of zinc oxide, 0.1 part of titanate coupling agent, and 90 parts of hexanol into a reaction kettle equipped with a thermometer, a stirrer and a reflux condenser, raise the temperature to 65 ° C, and stir at a speed of 300 rpm for 2 Hours, discharging, to obtain pretreated zinc oxide; 5 parts of pretreated zinc oxide, 0.1 part of sorbitan trioleate, 1 part of sodium laurylsulfonate, 80 parts of deionized water after premixing Ultrasonic dispersion for 2 minutes, with a power of 250w, quickly transfer the mixture into a reaction kettle with a stirrer and a reflux condenser, raise the temperature to 55°C, and the rotation speed is 200rpm, then add 0.15 parts of potassium persulfate, butyl methacrylate 2 1 part and 0.9 part of methyl methacrylate were mixed and slowly added dropwise into the reaction kettle, continued to heat up to 70°C, and the speed was 200rmp, reacted for 3 hours, cooled down and discharged, naturally precipitated overnight, took t...

Embodiment 3

[0020] Example 3: Add 10 parts of zinc sulfide, 0.1 part of aluminate coupling agent, and 90 parts of hexanol into a reaction kettle with a thermometer, a stirrer and a reflux condenser, raise the temperature to 65 ° C, and stir at a speed of 300 rpm for 2 Hours, discharge, obtain pretreated zinc sulfide; with 5 parts of pretreated zinc sulfide, 1.1 parts of ethylene glycol fatty acid ester, 80 parts of deionized water premixed ultrasonic dispersion 2min, power is 250w, the mixture is transferred rapidly Put it into a reaction kettle with a stirrer and a reflux condenser, raise the temperature to 55°C, and rotate at a speed of 200rpm, then add 0.15 parts of ammonium persulfate, 2 parts of methyl methacrylate and 0.9 parts of styrene, mix and slowly add to the reaction In the still, continue to heat up to 70°C, rotate at 200rmp, react for 3 hours, cool down and discharge, and naturally precipitate overnight. Take the lower layer of precipitate and wash it repeatedly, and filter ...

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PUM

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Abstract

Disclosed are a composite photocatalyst material with high activity in natural light and the preparation of the composite photocatalyst material, relating to environmental protection technology field. The invention is characterized in that the composite photocatalyst material is composed of polymer and inorganic substance, and can be obtained by the latex polymerization method; the polymer is polymerized by the common vinyl monomer; the inorganic substance can be used after being disposed with the coupling agent, the polymer combines with the inorganic substance by chemical bond; the separation of the inorganic substance and the polymer can be avoided when using the photocatalysis material. The invention method has wide raw material sources with simple preparation technology; no ultraviolet irradiation device needs to be provided additionally when the photocatalysis degrades the pollutants; the invention has high photo-catalytic activity just in natural light, thus the photo-catalytic efficiency is improved and the energy is effectively saved.

Description

1. Technical field [0001] The invention relates to a composite photocatalytic material with high activity under natural light and its preparation, belonging to the technical field of environmental protection. 2. Background technology [0002] Most of the photocatalytic materials used in the field of photocatalytic degradation of pollutants are N-type semiconductor materials, such as titanium oxide, zinc oxide, zinc sulfide, iron oxide, etc. Under the condition of light greater than its band gap energy, photocatalytic materials can completely degrade harmful organic substances in the environment and generate CO 2 and H 2 O, can purify the atmospheric environment. [0003] However, the ultraviolet light in natural light is only 6%, and the efficiency of photocatalytic utilization of sunlight is low, and it is usually necessary to provide additional ultraviolet light equipment. Many scientific and technological workers have done a lot of research work in order to broaden the...

Claims

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Application Information

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IPC IPC(8): B01J31/06B01J23/06B01J21/06B01J23/745A61L9/22
Inventor 潘柯良淡宜朱云峰江龙刘舒扬杨明娇
Owner SICHUAN UNIV
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