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Honeycomb structure graphene/ZnO nanorod composite film, manufacturing method and application

A zinc oxide nanorod and graphene film technology is applied in the field of honeycomb structure graphene/zinc oxide nanorod composite film and preparation, and can solve the problem of inability to form a multi-level structure, unavoidable aggregation of nanoparticles, and lack of nanoparticle distribution and orientation. control and other problems, to achieve the effect of obvious photoelectric conversion efficiency, improving photoelectric conversion efficiency, and improving photoelectric response performance.

Active Publication Date: 2015-03-25
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this premixing method lacks the control of the distribution and orientation of nanoparticles, cannot avoid the aggregation of nanoparticles in the hybrid film, cannot form a multi-level structure, and is only suitable for small-sized (<200nm) nanoparticles
In view of the fact that there is no relevant report on the multi-level structure graphene / zinc oxide nanorod composite film applied to photoelectric conversion, a low-cost and easy-to-control nanoparticle distribution and orientation macro-prepared multi-level structure graphene / zinc oxide Nanorod Composite Films Approach Has Significance

Method used

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  • Honeycomb structure graphene/ZnO nanorod composite film, manufacturing method and application
  • Honeycomb structure graphene/ZnO nanorod composite film, manufacturing method and application
  • Honeycomb structure graphene/ZnO nanorod composite film, manufacturing method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0036] 1) Preparation of graphene oxide / dioctadecyldimethylammonium bromide composite:

[0037] a) Add 1g of graphite powder (45 μm in particle size), 1.7g of potassium persulfate and 1.7g of phosphorus pentoxide into 8mL of concentrated sulfuric acid (98% by mass) successively, heat and stir at 80°C, stop heating after 6 hours, After the mixture was cooled to room temperature, it was separated by filtration through a cellulose acetate membrane with a pore size of 0.2 μm, washed with deionized water, and dried overnight to obtain pre-oxidized graphite;

[0038] b) Disperse the pre-oxidized graphite in 30mL of cold (0°C) concentrated sulfuric acid (98% by mass), then add 5g of potassium permanganate while stirring, continue stirring for 2 hours at 35°C, and then add 95mL of deionized water Dilute, then add 2mL hydrogen peroxide aqueous solution (mass percentage 30%), the bright yellow product that obtains; The product is filtered and successively with dilute hydrochloric acid s...

Embodiment 2

[0052] As in the steps of Example 1, the difference is that step 1c) of Example 1 is to use dioctadecyldimethylammonium bromide as a surfactant to electrostatically interact with graphene oxide to form a complex, while Example 2 It uses dihexadecyl dimethyl ammonium bromide as a surfactant to electrostatically interact with graphene oxide to form a complex. Further adopt the same method to prepare honeycomb structure graphene / zinc oxide nanorod composite film.

[0053] The average size of holes in the prepared composite film is 3 μm, the average distance between holes is 0.5 μm, the average length of zinc oxide nanorods is 1.0 μm, and the average diameter is 150 nm.

Embodiment 3

[0055] As in the steps of Example 1, the difference is that the step 2) of Example 1 uses chloroform as the organic solvent, and the honeycomb structure graphene film is prepared by volatilizing the chloroform solution under the condition of relative humidity of 85%. 3 is to adopt dichloromethane as solvent to prepare honeycomb structure graphene film. Further adopt the same method to prepare honeycomb structure graphene / zinc oxide nanorod composite film.

[0056] The average size of holes in the prepared composite film is 2.0 μm, the average distance between holes is 1.5 μm, the average length of zinc oxide nanorods is 1.0 μm, and the average diameter is 150 nm.

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Abstract

The invention discloses a honeycomb structure graphene / ZnO nanorod composite film, a manufacturing method and application in the aspect of photoelectric conversion, and belongs to the technical field of inorganic nanometer materials and energy storage and conversion. The honeycomb structure graphene / ZnO nanorod composite film serves as an anode of a photoelectric conversion device and used for improving the capture efficiency of light energy and the separation and transfer efficiency of photo electrons-holes, and a graphene-based semiconductor heterojunction device capable of improving photoelectric response efficiency is obtained. Compared with a graphene flat film / ZnO nanorod composite film, the photoelectric response performance of the honeycomb structure composite film is improved by 3 times. The photoelectric device has the advantages that the manufacturing method is simple, photoelectric conversion efficiency is remarkably improved, and the device is compatible with novel graphene materials.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanomaterials and energy storage and conversion, and specifically relates to a honeycomb structure graphene / zinc oxide nanorod composite film, a preparation method and an application in photoelectric conversion. Background technique [0002] Under the dual pressure of energy crisis and environmental problems, how to effectively use solar energy, an inexhaustible clean and renewable energy, to solve the energy shortage problem faced by human beings for a long time has become a research topic for scientists all over the world. . As early as 1839, the French scientist Edmond Becquerel discovered the photovoltaic effect, and since then people have started efforts to convert light energy into electrical or chemical energy. Inorganic semiconductor photoactive nanoparticles have the advantages of relatively abundant raw materials, low cost, relatively simple process technology, and stable performance,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/36H01G11/46H01G11/86C01B31/02
CPCY02E60/13H01G11/24C01B32/182C01B32/184H01G11/36H01G11/46H01G11/86
Inventor 尹升燕孙航门孝菊吴长锋秦伟平陈昊彬
Owner JILIN UNIV
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