Preparation method and application of polyaniline/titanium dioxide/graphene conductive composite membrane

A technology of titanium dioxide and polyaniline, applied in the direction of conductive adhesives, organic compounds/hydrides/coordination complex catalysts, chemical instruments and methods, etc., can solve the problem of narrow photoresponse range, low separation rate of photogenerated electrons and holes , Difficult separation and recovery of powder, etc., to achieve the effect of expanding the range of photoresponse, reducing the recombination rate, enhancing adhesion and conductivity

Inactive Publication Date: 2013-06-12
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a polyaniline/titanium dioxide/graphene composite film in view of the problems in the prior a...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: the preparation method of polyaniline / titanium dioxide / graphene composite membrane comprises the steps:

[0021] (1) Under nitrogen atmosphere, add TiO to 50mL hydrochloric acid solution (1M) 2 50g, graphene 0.03g, add aniline 1mL after magnetic stirring for 1h, continue stirring for 1h, dropwise add ammonium persulfate 2.0g, react at 25°C for 16h.

[0022] (2) The solution in step (1) was washed several times with ethanol and deionized water in sequence until the filtrate was colorless. Dry in a vacuum oven for 16 hours. The polyaniline / titanium dioxide / graphene composite material was obtained by grinding.

[0023] (3) According to the following ratio (mass ratio): 84% polyaniline / titanium dioxide / graphene composite material, 12% epoxy resin, 1.0% silane coupling agent and 3.0% curing agent are fully mixed. Use ethanol as a diluent to adjust the concentration of the mixture to obtain a polyaniline / titanium dioxide / graphene coating.

[0024] (4) Accord...

Embodiment 2

[0026] Embodiment 2: the preparation method of polyaniline / titanium dioxide / graphene composite membrane comprises the steps:

[0027] (1) Under nitrogen atmosphere, add TiO to 50mL hydrochloric acid solution (1M) 2 60g, graphene 0.03g, add 1mL of aniline after magnetic stirring for 1h, continue stirring for 1h, then add 2.0g of ammonium persulfate dropwise. Reaction at 25°C for 16h.

[0028] (2) The solution in step (1) was washed several times with ethanol and deionized water in sequence until the filtrate was colorless. Dry in a vacuum oven for 16 hours. The polyaniline / titanium dioxide / graphene composite material was obtained by grinding.

[0029] (3) According to the following ratio (mass ratio): 84% polyaniline / titanium dioxide / graphene composite material, 12% epoxy resin, 1.0% silane coupling agent and 3.0% curing agent are fully mixed. Use ethanol as a diluent to adjust the concentration of the mixture to obtain a polyaniline / titanium dioxide / graphene coating.

[0...

Embodiment 3

[0032] Embodiment 3: the preparation method of polyaniline / titanium dioxide / graphene composite film, comprises the steps:

[0033] (1) Under nitrogen atmosphere, add TiO to 50mL hydrochloric acid solution (1M) 2 100g, graphene 0.05g, add aniline 1mL after magnetic stirring for 1h, continue stirring for 1h, add 2.0g ammonium persulfate dropwise. Reaction at 25°C for 16h.

[0034] (2) The solution in step (1) was washed several times with ethanol and deionized water in sequence until the filtrate was colorless. Dry in a vacuum oven for 16 hours. The polyaniline / titanium dioxide / graphene composite material was obtained by grinding.

[0035] (3) According to the following ratio (mass ratio): 80% polyaniline / titanium dioxide / graphene composite material, 14% epoxy resin, 2.5% silane coupling agent and 3.5% curing agent and mix thoroughly. Use ethanol as a diluent to adjust the concentration of the mixture to obtain a polyaniline / titanium dioxide / graphene coating.

[0036] (4) A...

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PUM

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Abstract

The invention discloses a preparation method and application of a polyaniline/titanium dioxide/graphene conductive composite membrane. The preparation method comprises the steps of: adding 3-60wt% of titanium dioxide, 0.05-5wt% of graphene and 0.6-10wt% of polyaniline into protonic acid solution, and adopting an in-situ polymerization method to obtain a polyaniline/titanium dioxide/graphene conductive composite; sequentially and evenly coating conductive resin and polyaniline/titanium dioxide/graphene coatings to matrixes such as polypropylene, glass slides, metal plates and the like, wherein each coating is 30-500mu m thick; and drying at 60-80 DEG C to obtain the needed product. According to the preparation method, the titanium dioxide is embedded in a conductive material to prepare the membrane, the defects that the nano TiO2 is not easy to recover and the quantum yield is low can be overcome, the separation efficiency of photoproduction electrons and cavities can be improved, the photoresponse range can be extended, and the photocatalytic efficiency can be improved.

Description

technical field [0001] The invention relates to a preparation method and application of a titanium dioxide material, in particular to a preparation method and application of a polyaniline / titanium dioxide / graphene composite film. Background technique [0002] Titanium dioxide is a photocatalyst with high efficiency, non-toxicity, stable chemical properties, strong photooxidation resistance and low price. Titanium dioxide photocatalysis / photoelectrocatalysis technology has attracted extensive attention in the application of toxic and biodegradable organic wastewater and waste gas treatment. Nano-titanium dioxide has high degradation efficiency, but it can only perform photocatalytic reaction under ultraviolet light irradiation. At the same time, nano-titanium dioxide particles are small and difficult to recycle, and the separation rate of photogenerated electrons and holes still needs to be improved. In order to overcome the above shortcomings, preparing titanium dioxide co...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B27/18B32B27/28C09D179/02C09D163/00C09D7/12C09J9/02C09J179/02C09J163/00C09J11/04C08L79/02C08K3/04C08K3/22C08G73/02B01J31/38
Inventor 张延宗周帷钟建丹母康生邓仕槐王莉淋沈飞杨刚杨新瑶王应军
Owner SICHUAN AGRI UNIV
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