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Method for preparing graphene/metal phthalocyanine compound composites by electrostatic assembly

A metal phthalocyanine and graphene technology, which is applied in the field of electrostatic assembly to prepare graphene/metal phthalocyanine compound composite materials, can solve the problems of easy agglomeration of graphene and uneven distribution of metal phthalocyanine, and can prevent self-agglomeration. Effect

Inactive Publication Date: 2014-10-29
CAPITAL NORMAL UNIVERSITY
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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 provide a simple and efficient method for preparing graphene / metal phthalocyanine compounds in order to overcome the problems of easy agglomeration of graphene and uneven distribution of metal phthalocyanines on graphene carriers

Method used

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  • Method for preparing graphene/metal phthalocyanine compound composites by electrostatic assembly
  • Method for preparing graphene/metal phthalocyanine compound composites by electrostatic assembly

Examples

Experimental program
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Effect test

Embodiment 1

[0020] 20mL graphene oxide (GO) aqueous solution (1mg / mL), 10ml PDDA (dispersed in 0.5M NaCl solution, mass concentration 1%) NaCl solution, stirred overnight, the solution was brown, and the above Adjust the pH of the mixture to 10-12, add 8 μL of hydrazine hydrate (85%), continue to stir, and react in a water bath at 95°C for 24 hours. The product was centrifuged, washed with water, and vacuum-dried at 60°C for 24 hours to obtain black powder GR / PDDA. 20 mg of GR / PDDA was dispersed in 20 mL of deionized water, and sonicated for 1 hour. Continue to add 20 mg sulfonated cobalt phthalocyanine (CoTsPc), stir for 24 hours, centrifuge, wash with water, and vacuum dry at 60 °C for 24 hours to obtain a black powder GR / CoTsPc composite material.

Embodiment 2

[0022] 20mL graphene oxide (GO) aqueous solution (1mg / mL), 10ml PDDA (dispersed in 0.5M NaCl solution, mass concentration is 1%), stirred overnight, the solution was brown, and the above mixture was dissolved with NaOH (0.2M) Adjust the pH to 10-12, add 20mg NaBH4, continue to stir, and react in a water bath at 95°C for 24h. The product was centrifuged, washed with water, and vacuum-dried at 60°C for 24 hours to obtain black powder GR / PDDA. 20 mg of GR / PDDA was dispersed in 20 mL of deionized water, and sonicated for 1 hour. Add 20 mg sulfonated iron phthalocyanine (FeTsPc), stir for 24 hours, centrifuge, wash with water, and vacuum dry at 60°C for 24 hours to obtain black powder GR / FeTsPc composite material.

Embodiment 3

[0024] 10mL graphene oxide (GO) aqueous solution (1mg / mL), 5ml PDDA (dispersed in 0.5M NaCl solution, mass concentration 1%), stirred overnight, the solution was brown, and the above mixed solution was adjusted with ammonia water (28%) pH = 10-12, add 4 μL hydrazine hydrate (85%), continue to stir, and react in a water bath at 95°C for 24 hours. The product was centrifuged, washed with water, and dried under vacuum at 60°C for 24 hours to obtain a black powder of GR / PDDA. 10 mg of GR / PDDA was dispersed in 10 mL of deionized water and ultrasonicated for 1 hour. Add 10 mg tetracarboxy cobalt phthalocyanine (CoTcPc), stir for 24 hours, centrifuge, wash with water, and vacuum dry at 60°C for 24 hours to obtain a black powder GR / CoTcPc composite.

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Abstract

Belonging to the technical field of graphite / metal phthalocyanine, the invention relates to a method for preparing a graphene / metal phthalocyanine compound composite material through electrostatic assembly. The method includes: combining graphene oxide with PDDA through electrostatic adsorption, and reducing the graphene oxide into graphene with a reducing agent so as to obtain a GR / PDDA composite material, which is then further combined with a metal phthalocyanine compound by electrostatic adsorption, thus finally obtaining the graphene / metal phthalocyanine compound composite material. In the invention, strong electrostatic adsorption exists between the graphene and the PDDA, and between the PDDA and a metal phthalocyanine derivative, self-agglomeration of graphene can be prevented, so that the metal phthalocyanine derivative can be evenly attached to the graphene surface.

Description

technical field [0001] The invention belongs to the technical field of graphene / metal phthalocyanines, in particular to a method for preparing graphene / metal phthalocyanine compound composite materials through electrostatic assembly. Background technique [0002] Graphene (Graphene), discovered by Geim et al. in 2004, is a two-dimensional carbon atom crystal with sp2 hybrid orbitals. Graphene not only has excellent electrical properties, light weight, good thermal conductivity, and large specific surface area, but also has some unique properties, such as quantum Hall effect and quantum tunneling effect. Graphene-based nanocomposites exhibit many excellent properties in the fields of energy storage, liquid crystal devices, electronic devices, biomaterials, sensing materials, and catalyst supports, and have broad application prospects. [0003] Phthalocyanine complexes (metal phthalocyanine, MPc) are macrocyclic compounds with a tetraazatetrabenzoporphyrin structure, and have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D487/22
Inventor 左霞李腾飞崔鲁芳张瑞吕海娟朱雪琳
Owner CAPITAL NORMAL UNIVERSITY
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