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Tin oxide hollow hexagon nanosheet with hierarchical structure, and preparation method thereof

A layered structure and nanosheet technology, applied in tin oxide, nanotechnology, etc., can solve the problem of difficult control of template removal, and achieve good application prospects, easy control, and novel structure

Inactive Publication Date: 2012-08-15
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing hollow structures are spherical structures, and most of the synthesis methods are sol-gel template method, and the removal of the template after the reaction is difficult to control

Method used

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  • Tin oxide hollow hexagon nanosheet with hierarchical structure, and preparation method thereof
  • Tin oxide hollow hexagon nanosheet with hierarchical structure, and preparation method thereof
  • Tin oxide hollow hexagon nanosheet with hierarchical structure, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Preparation of hollow hexagonal tin oxide nanosheets with single-layer structure

[0021] Disperse 1.38 grams of cadmium hydroxide in a mixed solution with a volume ratio of ethanol and water of 0.37:1, ultrasonically disperse for 30 minutes, add 0.9 grams of urea and 0.1 grams of potassium stannate to the above solution, and stir magnetically for 20 minutes. Transfer to a 50ml reactor and react at 170°C for 36 hours. The white precipitate was washed with deionized water, dried at 80°C, and sintered at 600°C for 1 hour to obtain hollow hexagonal tin oxide nanosheets with a single-layer structure. The transmission electron microscope photos are as follows: figure 1 shown.

Embodiment 2

[0022] Example 2 Preparation of double-layer hollow hexagonal tin oxide nanosheets

[0023] Disperse 1.4 grams of hollow hexagonal tin oxide nanosheets obtained in Example 1 in a mixed solution with a volume ratio of ethanol and water of 0.37:1, ultrasonically disperse for 30 minutes, add 0.9 grams of urea and 0.1 grams of potassium stannate to the above solution , magnetically stirred for 20 min, and the uniformly stirred solution was transferred to a 50 ml reaction kettle, and reacted at 170° C. for 36 hours. The white precipitate was washed with deionized water, dried at 80°C, and sintered at 600°C for 1 hour to obtain hollow hexagonal tin oxide nanosheets with a double-layer structure. The transmission electron microscope photos are as follows: figure 2 shown.

Embodiment 3

[0024] Example 3 Preparation of double-layer hollow hexagonal tin oxide nanosheets

[0025] Disperse 1.0 g of the hollow tin oxide nanosheets obtained in Example 1 in a mixed solution with a volume ratio of ethanol and water of 0.37:1, ultrasonically disperse for 30 min, add 0.9 g of urea and 0.1 g of potassium stannate to the above solution, and stir magnetically After 20 minutes, the uniformly stirred solution was transferred to a 50ml reaction kettle, and reacted at 170°C for 36 hours. The white precipitate was washed with deionized water, dried at 80°C, and sintered at 600°C for 1 hour to obtain hollow hexagonal tin oxide nanosheets with a three-layer structure. The transmission electron microscope photos are as follows: image 3 shown. Figure 4 It is the I-V curve of the battery corresponding to the hollow hexagonal tin oxide nanosheet / P25 composite film electrode with layered structure of the present invention.

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Abstract

The invention relates to a tin oxide hollow hexagon nanosheet with a hierarchical structure, and a preparation method of the nanosheet. The nanosheet is formed by assembling nanoparticles with the size of 2-10nm, and a multilayer hollow hexagon nanosheet structure can be formed, wherein the cavity diameter is 150-400nm, and the single-layer wall thickness is 10-30nm. The preparation method comprises the steps of: based on a hexagon cadmium hydroxide nanosheet as a template, dispersing the hexagon cadmium hydroxide nanosheet into water solution; adding tin salt into the obtained water solution, and carrying out hydro-thermal treatment at a certain temperature after mixing; washing to obtain a tin oxide nanosheet; and repeating the above-mentioned steps to obtain the hollow tin oxide nanosheet with the multilayer structure. The preparation method is simple in reaction process and easy to control. The tin oxide is novel in structure and has good application prospect in the fields such as a thin film resistor, sensitive material, an optoelectronic device, electrode material and the like.

Description

technical field [0001] The invention relates to a tin oxide hollow hexagonal nanosheet with a layered structure and a preparation method thereof. Background technique [0002] The chemical, optical and electrical properties of nano-semiconductor oxides mainly depend on the morphology and size of crystals. The development of nanocrystalline structures with special morphology and three-dimensional structure will give them better functional application prospects. [0003] As a semiconductor material with a wide bandgap, tin oxide has the advantages of good stability, strong oxidation resistance, and is not easy to be corroded by light. It is widely used as an energy conversion material in modern scientific and technological research, especially light energy and chemical energy, Conversion between electrical energy. The disadvantages of nano-tin oxide are insufficient light utilization and low carrier separation efficiency. Therefore, tin oxide nanocrystals with large specifi...

Claims

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Application Information

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IPC IPC(8): C01G19/02B82Y40/00
Inventor 顾锋马春荣李春忠邵玮江浩
Owner EAST CHINA UNIV OF SCI & TECH
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