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Macromolecular composite membrane material with photocatalysis activity and preparation method thereof

A technology of photocatalytic activity and polymers, which is applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc. Particles cannot be excited by light sources, etc., and achieve the effect of simple preparation method, easy operation and low cost

Active Publication Date: 2016-07-13
MEIWA PLASTIC SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, TiO 2 It is a typical inorganic substance, its surface is hydrophilic, and it is difficult to disperse uniformly in polymer materials; in addition, most polymer materials have poor light transmission performance, and some TiO coated with polymers 2 Particles cannot be efficiently excited by light sources

Method used

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  • Macromolecular composite membrane material with photocatalysis activity and preparation method thereof
  • Macromolecular composite membrane material with photocatalysis activity and preparation method thereof
  • Macromolecular composite membrane material with photocatalysis activity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) TiO 2 -Preparation of graphene composite materials

[0044] Get 1g graphene oxide (50m 2 / g) and 5mL of deionized water and 250mL of absolute ethanol were mixed, ultrasonicated for 15 minutes to obtain a brown-black suspension solution, and then under strong stirring conditions, 2.5g of butyl titanate was added dropwise to the suspension and the temperature was raised to 80°C reaction. After reacting for 5 hours, the reaction liquid was cooled to room temperature, filtered, and washed until the washing liquid was close to neutral to obtain TiO 2 - Graphene oxide nanocomposites, the TiO 2 -Graphene oxide nanocomposites suspended in 200mL of purified water to obtain TiO 2 - Suspension system of graphene oxide nanomaterials.

[0045] Add the above to include TiO 2 -All the suspension system of graphene oxide nanomaterials was moved into the autoclave, and then 1g of ascorbic acid was added. After sealing it well, it was placed in a high-temperature blast drying o...

Embodiment 2

[0054] (1) TiO 2 -Preparation of graphene composite materials

[0055] Take 1g of graphene oxide, 5mL of deionized water and 250mL of absolute ethanol and mix them with ultrasound for 15 minutes to obtain a brown-black suspension solution. Then, under strong stirring conditions, add 5g of butyl titanate dropwise into the suspension and heat up to 80 ℃ reaction. After reacting for 5 hours, the reaction liquid was cooled to room temperature, filtered, and washed until the washing liquid was close to neutral to obtain TiO 2 - Graphene oxide nanocomposites, the TiO 2 -Graphene oxide nanocomposites suspended in 200mL of purified water to obtain TiO 2 - Suspension system of graphene oxide nanomaterials.

[0056] Add the above to include TiO 2 -The suspension system of graphene oxide nanomaterials is all moved into the autoclave, and then 1g of ascorbic acid is added. After sealing it well, it is placed in a high-temperature blast drying oven, placed at 160°C for 24 hours, and t...

Embodiment 3

[0065] (1) TiO 2 -Preparation of graphene composite materials

[0066]Take 1g of graphene oxide and 5mL of deionized water and mix them with 250mL of absolute ethanol, sonicate for 15 minutes to obtain a brown-black suspension solution, and then add 7.5g of butyl titanate dropwise to the suspension under strong stirring conditions and then heat up to Reaction at 80°C. After reacting for 5 hours, the reaction liquid was cooled to room temperature, filtered, and washed until the washing liquid was close to neutral to obtain TiO 2 - Graphene oxide nanocomposites, the TiO 2 -Graphene oxide nanocomposites suspended in 200mL of purified water to obtain TiO 2 - Suspension system of graphene oxide nanomaterials.

[0067] Add the above to include TiO 2 -The suspension system of graphene oxide nanomaterials is all moved into the autoclave, and then 1g of ascorbic acid is added. After sealing it well, it is placed in a high-temperature blast drying oven, placed at 170°C for 24 hours...

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Abstract

The invention discloses a macromolecular composite membrane material with photocatalysis activity and a preparation method thereof.The preparation method includes: (1), mixing oxidized graphene, deionized water and anhydrous alcohol, dropwise adding titanic acid after ultrasonic dispersion, heating for reaction, cooling reaction liquid, and filtering and washing to obtain a suspension system containing a TiO2-oxidized graphene nano material; (2), transferring the suspension system into a high-pressure kettle, adding a reductant, performing thermal treatment after sealing, cooling before separating, and washing and drying to obtain a TiO2-oxidized graphene nano powder material; (3), suspending the TiO2-oxidized graphene nano powder material in methyl methacrylate, adding initiator after ultrasonic dispersion, stirring in water bath for reaction to obtain membrane casting liquid, uniformly knife-coating the membrane casting liquid on a substrate, and drying to obtain the macromolecular composite membrane material.The preparation method is simple in synthesis process, obtained inorganic nano TiO2 particles are closely combined with graphene, and a graphene-TiO2 composite material is uniformly dispersed in a polymethacrylate macromolecular membrane.

Description

technical field [0001] The invention relates to the preparation of organic-inorganic hybrid functional film and the field of heterogeneous photocatalysis preparation and application, in particular to a preparation method of a polymer composite film material with photocatalytic activity. Background technique [0002] Since TiO 2 Since the report of degrading organic pollutants such as PCBs under ultraviolet light, TiO 2 The representative heterogeneous semiconductor photocatalysis has been developed by leaps and bounds, and remarkable results have been achieved. [0003] For example, the Chinese invention patent application with the publication number CN104307549A discloses a copper carbonate-supported titanium dioxide ultraviolet photocatalyst and its preparation method. The photocatalyst includes 1 part of titanium dioxide, 0.2 to 0.5 parts of Inorganic carbonate, 0.001-0.5 part of inorganic copper salt. The method dissolves the inorganic carbonate in water to obtain an ...

Claims

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Application Information

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IPC IPC(8): B01D69/12B01D67/00B01D71/40B01D69/02
CPCB01D67/0079B01D69/02B01D69/125B01D71/40B01J31/38B01D2325/10B01J35/39
Inventor 王挺吴礼光祝轶琛许智勇
Owner MEIWA PLASTIC SHANGHAI
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