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A polyparaphenylene/tio 2 Composite microsphere and preparation method thereof

A technology of composite microspheres and polyparaphenylene, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as complex operations and harsh conditions , to achieve the effect of simple process, mild reaction conditions and low preparation cost

Active Publication Date: 2021-01-19
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used technologies are mostly based on noble metals or inorganic oxygen (or sulfur) compounds and TiO 2 doping to extend TiO 2 The range of spectral response, most of its preparation methods are harsh, such as the need for high temperature and complex operation and other defects

Method used

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  • A polyparaphenylene/tio <sub>2</sub> Composite microsphere and preparation method thereof
  • A polyparaphenylene/tio <sub>2</sub> Composite microsphere and preparation method thereof
  • A polyparaphenylene/tio <sub>2</sub> Composite microsphere and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0023]The invention also includes a poly-p-phenylene / TiO2The preparation method of composite microspheres includes the following steps:

[0024]Step 1. Dissolve the brush rod-shaped poly-p-phenylene with a branched chain structure in a good solvent to prepare a polymer solution;

[0025]Step 2. Place the polymer solution in a closed environment with a poor solvent as the atmosphere, and stand still to obtain polymer microspheres;

[0026]Step 3. After ultrasonically dispersing the polymer microspheres, use a sulfonation reagent to perform a sulfonation reaction to obtain sulfonated polymer microspheres;

[0027]Step 4. Disperse the sulfonated polymer microspheres ultrasonically, add tetra-n-butyl titanate, react for more than 1 hour at room temperature, remove the remaining tetra-n-butyl titanate, add alcohol / water solution, and react at room temperature for 2-8 hours , To obtain the poly-p-phenylene / TiO2Composite microspheres.

[0028]Wherein, the brush rod-shaped poly-p-phenylene having a branch...

Embodiment 1

[0047]Example 1 of the present invention is a poly-p-phenylene / TiO2Composite microsphere and its preparation method:

[0048]The poly-p-phenylene / TiO2The preparation method of composite microspheres includes the following steps:

[0049]Step 1. Dissolve poly(p-dioctyloxybenzene) in chloroform to a concentration of 10 mg / ml, prepare 10 mL of polymer solution in a 50 mL small beaker, and ultrasonically disperse uniformly.

[0050]Step 2. Place the small beaker containing the above polymer solution in a closed environment with methanol as the atmosphere. After standing for 48 hours at room temperature, take out the small beaker, add appropriate amount of ethanol to wash and centrifuge to obtain Polymer microspheres.

[0051]Step 3. After the polymer microspheres prepared in the above steps are ultrasonically dispersed with an appropriate amount of ethanol, an appropriate amount of concentrated sulfuric acid is added to sulfonate in a 40°C water bath for 1 hour, washed with ethanol, and centrifuged...

Embodiment 2

[0053]Example 2 is a poly-p-phenylene / TiO2Composite microsphere and its preparation method:

[0054]The poly-p-phenylene / TiO2The preparation method of composite microspheres includes the following steps:

[0055]Step 1. Dissolve poly(p-dioctyloxybenzene) in chloroform to a concentration of 10 mg / ml, prepare 10 mL of polymer solution in a 50 mL small beaker, and ultrasonically disperse uniformly.

[0056]Step 2. Place the small beaker containing the above polymer solution in a closed environment with methanol as the atmosphere. After standing for 48 hours at room temperature, take out the small beaker, add appropriate amount of ethanol to wash and centrifuge to obtain Polymer microspheres.

[0057]Step 3. After the polymer microspheres prepared in the above steps are ultrasonically dispersed with an appropriate amount of ethanol, an appropriate amount of concentrated sulfuric acid is added for sulfonation in a 40°C water bath for 2 hours, washed with ethanol, and centrifuged to obtain sulfonated...

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Abstract

The invention discloses a polyparaphenylene / TiO 2 Composite microspheres and preparation method thereof, the polyparaphenylene / TiO 2 The preparation method of composite microspheres includes the following steps: dissolve brush rod-shaped polyparaphenylene with a branched chain structure in a good solvent to prepare a polymer solution; place the polymer solution in a closed environment with a poor solvent as the atmosphere , leave to stand to obtain polymer microspheres; after ultrasonically dispersing the polymer microspheres, add concentrated sulfuric acid to sulfonate them to obtain sulfonated polymer microspheres; ultrasonically disperse the sulfonated polymer microspheres, and add tetrakis titanate n-butyl ester, after reacting at room temperature, remove the remaining tetra-n-butyl titanate, add ethanol / water solution, and react at room temperature for more than 1 hour to obtain the polyparaphenylene / TiO 2 Composite microspheres. Compared with the existing technology, the product of the present invention can directly photocatalytically degrade dyes under sunlight, and has good photocatalytic effect; the method of the present invention has a simple process.

Description

Technical field[0001]The invention belongs to the technical field of functional polymer materials, and specifically relates to a poly(p-phenylene / TiO)2Composite microspheres and preparation method thereof.Background technique[0002]With the rapid development of the dye textile industry, the variety and quantity of dyes are increasing, printing and dyeing wastewater has become one of the key pollution sources of the water system environment. Malachite green has been widely used in textiles, leather, food coloring, and cytochemical dyeing. At the same time, it is also widely used in aquaculture and the preparation of insect repellents, fungicides and preservatives. However, domestic and foreign scholars have found that malachite green and its metabolites (ie, colorless malachite green) have high toxicity, high residue, high carcinogenicity, and teratogenicity. Related research topics such as the monitoring of malachite green in the environment, toxicological effects, and the treatment ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/38C02F1/30
CPCC02F1/30B01J31/38C02F2305/10B01J35/51B01J35/39
Inventor 白卫斌姚日进官美琴徐艳莲林金火
Owner FUJIAN NORMAL UNIV