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Continuous large-area zinc oxide nano-sheet and preparation method thereof

A zinc oxide nanometer and large-area technology, applied in the field of nanomaterials, can solve the problems of lack of zinc oxide nanostructures and the inability to realize large-area, repeatable and low-cost preparation processes

Inactive Publication Date: 2010-09-08
JIANGSU POLYTECHNIC UNIVERSITY
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Problems solved by technology

[0005] In view of the lack of continuous zinc oxide nanostructures described in the technical background, and the inability to realize large-area, repeatable, and low-cost preparation processes, the present invention proposes a method on metal substrates and metal oxide substrates. Realization of large-area, continuous porous ZnO films composed of ZnO nanoflakes using a suitable hydrothermal preparation process

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  • Continuous large-area zinc oxide nano-sheet and preparation method thereof
  • Continuous large-area zinc oxide nano-sheet and preparation method thereof
  • Continuous large-area zinc oxide nano-sheet and preparation method thereof

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Embodiment Construction

[0027] Further illustrate content of the present invention below in conjunction with example:

[0028] Case 1: Preparation of porous zinc oxide film on the surface of metal aluminum without nanostructure

[0029] Set the surface area to 100cm 2Industrial pure aluminum, grade 1A95, soaked in acetone for 10 minutes, rinsed with deionized water, then immersed in a mixture of 6.0% by weight phosphoric acid and 1.8% by weight chromic acid at 60°C for 30 minutes to remove the surface oxide layer.

[0030] Put the aluminum substrate into the beaker, add 0.005mol Zn(NO 3 ) 2 , 0.005 mol of hexamethylenetetramine was prepared into 1000ml of solution, and heated in an oven at 100°C for 1 hour. After the reaction, the sample was taken out from the beaker, and dried in an oven at 60°C. The surface morphology of the obtained porous ZnO is as follows: figure 1 shown. The thickness of the zinc oxide flakes is about 10-20 nm, and many zinc oxide flakes are interconnected to form a contin...

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Abstract

The invention relates to continuous large-area zinc oxide nano sheets and a preparation method thereof, belonging to the technical field of nano material. The preparation method comprises the following steps: building a micro-nano structure on a metal and metal oxide substrate as required; dispersing zinc nitrate and hexamethylenetetramine in deionized water by use of the hydrothermal synthesis method, and softly stirring for dissolution; subsequently, reacting at a constant temperature of 70 to 110 DEG C for 10 minutes to 10 hours, taking out the sample, cleaning and drying to obtain a continuous porous membrane consisting of zinc oxide nano sheets on the substrate. The thickness of the obtained zinc oxide nano sheets is between 1 to 100 nanometers, and the nano sheets are connected with each other on the substrate to form a porous structure, wherein the aperture of the porous structure is between 0.5 to 3 mu m and the total thickness of the porous zinc oxide layer is between 100 nm to 50 mu m. Such continuous zinc oxide porous membrane can form a free independent structure after the substrate is removed, and the application field thereof includes gas sensor, solar battery material, surface coating, nano photoelectric device and so on.

Description

technical field [0001] The invention relates to a large-area and continuous porous film preparation technology composed of zinc oxide nano flakes, which belongs to the technical field of nanometer materials, and its application fields include gas sensors, solar cell materials, surface coatings, nano photoelectric devices and the like. technical background [0002] Zinc oxide, due to its excellent photoelectric properties, thermal stability and chemical stability, has been widely used in high-tech products such as photoelectric devices, gas sensors, and piezoelectric sensors. The development of ZnO nanostructures can not only further study the performance of ZnO on the low-dimensional scale, but also develop new devices. There are many inventions about ZnO nanostructures. Most of the reported ZnO nanostructures are structures with large aspect ratios formed by rapid growth along the [0001] direction, such as nanorods and nanowires. The difference is that if the growth rate i...

Claims

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Application Information

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IPC IPC(8): C01G9/02
Inventor 丁建宁丁古巧袁宁一刘跃斌杨蓉
Owner JIANGSU POLYTECHNIC UNIVERSITY
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