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Self-assembly preparation method of gas-liquid interface of silver nanowire/graphene polymer composite film

A technology of silver nanowires and composite films, applied in the field of chemistry, can solve the problems of high conductivity recovery of graphene, and achieve the effects of being suitable for large-scale promotion, improving solubility, and increasing loading capacity.

Inactive Publication Date: 2015-09-23
林州市清华·红旗渠新材料产业化发展中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This approach improves graphene dispersion, but other properties such as high electrical conductivity of graphene are not really restored

Method used

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  • Self-assembly preparation method of gas-liquid interface of silver nanowire/graphene polymer composite film
  • Self-assembly preparation method of gas-liquid interface of silver nanowire/graphene polymer composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Graphene oxide colloid (GO, 4mg / ml) was prepared by Hummers method;

[0016] (2) Mix the same volume and concentration (5ml, 0.1M) of sodium citrate aqueous solution and silver nitrate water-DMF solution (V / V=1:1) in a three-necked flask, as solution A. Add 12.96ml polydiallyldimethylammonium chloride (PDDA) modified graphene oxide aqueous solution 54ml (silver:graphene oxide mass ratio is 1:4) as solution B. Sonicate for 30 minutes at room temperature, and then magnetically stir for 12 hours in the dark. Stir magnetically in an oil bath at 130°C for 3h. Then add sodium citrate 2.16g and ascorbic acid 17.28g as the reducing agent of graphene oxide. Graphene oxide was reduced to conductive graphene sheets by ascorbic acid, sodium citrate and polydiallyl dimethyl ammonium chloride at 90°C for 10 hours, and finally washed and centrifuged to prepare 12mg / ml silver nanowires / Graphene hybrid aqueous solution concentration;

[0017] (3) The improved gas-liquid i...

Embodiment 2

[0019] (1) Graphene oxide colloid (GO, 4.5mg / ml) was prepared by Hummers method;

[0020](2) Mix sodium citrate aqueous solution and silver nitrate aqueous-DMF solution (V / V=1:1.2) of the same volume and concentration (5ml, 0.2M) in a three-necked flask and make it as solution A. Add 30.24ml polydiallyldimethylammonium chloride (PDDA) modified graphene oxide aqueous solution 96ml (silver:graphene oxide mass ratio is 1:4) as solution B. Sonicate for 30 min at room temperature, and then magnetically stir for 10 hours in the dark. Then magnetically stir in an oil bath at 130° C. for 3 h. Then add 8.64g sodium citrate and 34.56g ascorbic acid as the reducing agent of graphene oxide. Graphene oxide was reduced to conductive graphene sheets by ascorbic acid, sodium citrate and polydiallyl dimethyl ammonium chloride at 60°C for 7 hours, and finally fully washed and centrifuged to prepare 14mg / ml silver nanosheets. Concentration of wire / graphene hybrid aqueous solution;

[0021] ...

Embodiment 3

[0023] (1) Graphene oxide colloid (GO, 5mg / ml) was prepared by Hummers method;

[0024] (2) Mix sodium citrate aqueous solution and silver nitrate aqueous-DMF solution (V / V=1:1.2) of the same volume and concentration (5ml, 0.3M) in a three-necked flask, as solution A. Add 51.84ml polydiallyldimethylammonium chloride (PDDA) modified graphene oxide aqueous solution 129.6ml (silver:graphene oxide mass ratio is 1:4) as solution B. Sonicate for 30 min at room temperature, and then magnetically stir for 10 hours in the dark. Then magnetically stir in an oil bath at 130° C. for 3 h. Then add 12.96g sodium citrate and 58.32g ascorbic acid as the reducing agent of graphene oxide. Graphene oxide was reduced to conductive graphene sheets by ascorbic acid, sodium citrate and polydiallyl dimethyl ammonium chloride at 70°C for 8 hours, and finally fully washed and centrifuged to prepare 15mg / ml silver nanosheets. Concentration of wire / graphene hybrid aqueous solution;

[0025] (3) The i...

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Abstract

The invention discloses a preparation method of a silver nanowire / graphene polymer composite film and belongs to the field of chemistry. The preparation method comprises the following steps: (1) preparing graphene oxide aqueous solution colloid; (2) preparing silver nanowire / grapheme hybrid aqueous solution with certain concentration; (3) performing self-assembly on gas-liquid interface. With adoption of the preparation method, the ubiquitous defects in the preparation methods at present that a grapheme film is poor in characteristics and low in repeatability, and chemical reagents are polluted are overcome.

Description

technical field [0001] The invention relates to a preparation method of a composite film, in particular to a preparation method of a silver nanowire / graphene polymer composite film, and belongs to the field of chemistry. Background technique [0002] Since its discovery in 2004, graphene has attracted widespread attention from the scientific community due to its unique properties and two-dimensional nanostructure, and was named one of the top ten scientific advances by Science magazine in 2009. No matter in theory or experimental research, graphene has shown great scientific significance and application value, and the research based on graphene materials also provides experimental and theoretical basis for the application of graphene. Nevertheless, the research on graphene materials has just started, and the scope of research is still limited. In addition to the intrinsic properties of graphene, many problems based on graphene composite materials need further research, such ...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L29/04C08L33/02C08L33/26C08L71/02C08L79/02C08K3/04C08K3/08C01B31/04B82Y40/00
Inventor 张晨光张钲王玉鹏王涛朱新兵
Owner 林州市清华·红旗渠新材料产业化发展中心
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