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Method for preparing controllable ordered porous tin dioxide nano structures

A technology of tin dioxide and nanostructures, applied in the direction of tin oxide, etc., can solve the problems of difficult controllable and orderly porous tin dioxide nanostructures, harsh preparation and operating conditions, and limitations in the application of tin dioxide, and achieve high morphology Orderly, effective control of three-dimensional depth, and effective control of hole wall thickness

Inactive Publication Date: 2012-10-17
YANGZHOU UNIV
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Problems solved by technology

The porous tin dioxide nanostructure produced by the sputtering method is similar to the anodic oxidation method, and its preparation and operating conditions are more harsh, which is difficult to apply to large-scale production
Although the sol method can prepare multilayer porous tin dioxide nanostructures, the pores are not uniform, and the pore size and pore wall thickness are uncontrollable.
The existing methods and technologies are difficult to realize the preparation of controllable and ordered porous tin dioxide nanostructures, which greatly limits the application of tin dioxide in gas sensing materials

Method used

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  • Method for preparing controllable ordered porous tin dioxide nano structures
  • Method for preparing controllable ordered porous tin dioxide nano structures
  • Method for preparing controllable ordered porous tin dioxide nano structures

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Embodiment Construction

[0020] The medicaments or reagents involved in the present invention are all analytically pure.

[0021] 8.75g of SnCl 4 4H 2 O was added to 100ml of absolute ethanol solution, heated to 80°C by a magnetic stirrer, kept at a constant temperature of 80°C in a water bath for 10h, and the rotor speed was 500r / min. Then it was cooled to room temperature and left to stand for 24 hours for aging treatment to obtain a tin dioxide sol solution.

[0022] Add 0.9g of styrene into 70ml of deionized water, heat it to 70°C with a magnetic stirrer and water bath, and set the solution as A solution. 0.115g of K 2 S 2 o 8 Add it into 5ml deionized water and sonicate for 20-30min, and set this solution as B solution. After keeping solution A at 70°C for 20 minutes, slowly drop into solution B under the action of a magnetic stirrer at a speed of 300 r / min. After the dropwise addition, keep at 70°C for 24 hours to obtain polystyrene pellets. The prepared polystyrene pellets were formulat...

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Abstract

The invention discloses a method for preparing controllable ordered porous tin dioxide nano structures, and belongs to the technical fields of gas sensitive sensing materials and solar cell preparation. The method comprises the following steps of: mixing SnCl4.4H2O and absolute ethanol in a certain ratio, keeping the mixture for 8 to 12 hours at the constant temperature of between 70 and 90 DEG Cto obtain tin dioxide sol solution, and dripping the tin dioxide sol solution onto a substrate, the surface of which polystyrene spheres are deposited on; and drying, and performing high-temperature annealing to obtain the controllable ordered porous tin dioxide nano structures. By the method, the contact area of the materials and the external environment is greatly improved, and controllable adjustment of aperture size, pore wall thickness and three-dimensional depth of the product can be realized; and the product has excellent gas sensitive performance and photoelectric performance.

Description

technical field [0001] The invention discloses a method for preparing a controllable and ordered porous tin dioxide nanostructure. The key of the method is to prepare the controllable porous and ordered tin dioxide nanostructure by using an inverse opal structure, which belongs to gas-sensitive sensing materials and solar energy The field of battery manufacturing technology. Background technique [0002] SnO nanostructures have important applications in transparent conductive electrodes, solar cells, and especially gas sensors. As a gas-sensing sensing material, it first requires a relatively high gas sensitivity and a relatively large specific surface area, and secondly requires low power consumption, good chemical stability, corrosion resistance, and no pollution. Porous tin dioxide nanostructures are widely favored because of their larger specific surface area and better contact with external gases. However, at present, there are few preparation techniques for porous ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02
Inventor 陈海涛周旭明杨文露陈小兵朱骏
Owner YANGZHOU UNIV
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