Method for preparing stannic oxide nanocrystalline thin film with honeycomb structure by using hydrothermal method

Abstract

The invention relates to a method for preparing a stannic oxide nanocrystalline thin film with a honeycomb structure by using a hydrothermal method. The method specifically comprises the following steps of firstly, cleaning the surface of an FTO (fluorine-doped tin oxide) conductive glass sheet by deionized water, putting into a reaction kettle, adding a prepared stannic chloride solution with concentration of 1.0 to 0.01mol / L into a beaker, adding distilled water, and stirring; dripping a sodium hydroxide solution into the beaker loaded with the stannic chloride solution, so as to form a white slurry, wherein the mole number of the sodium hydroxide solution is equal to four times of mole number of stannic chloride; maintaining the pH (potential of hydrogen) value of the slurry to 9, continuing to stir for 0.5 to 3h, and pouring the slurry in the beaker into the reaction kettle loaded with the FTO conductive glass sheet; putting the reaction kettle into an oven, increasing the temperature in the oven to 200 DEG C, and performing heat preservation for 1 to 7 days; fetching out the FTO conductive glass sheet, cleaning for three times by the distilled water, cleaning for one time by absolute ethyl alcohol, and drying, so as to obtain the stannic oxide nanocrystalline thin film with the honeycomb structure. The method has the advantages that the operation is simple and convenient, the control is easy, and the energy consumption is low; the stannic oxide nanocrystalline thin film can be prepared.

Description

technical field [0001] The invention belongs to film materials and preparation methods thereof, and relates to an inorganic film with a special structure and a preparation method thereof, in particular to a process for preparing tin oxide film materials with a honeycomb structure by a hydrothermal method. Background technique [0002] When the one-dimensional linear scale of a solid or liquid is much smaller than the other two dimensions, we call such a solid or liquid a membrane. Generally, the film can be divided into two categories, one is the film with a thickness greater than 1 micron, called thick film; the other is the film with a thickness of less than 1 micron, called thin film. Thin film technology has a wide range of applications, such as computer storage devices, pharmaceuticals, manufacturing thin film batteries, dye-sensitized solar cells, etc. [0003] In the study of fuel-sensitized solar cell photoanode materials, SnO 2 Has a ratio of TiO 2 , ZnO higher c...

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Problems solved by technology

[0007] In order to solve the above problems, the object of the present invention is to overcome the disadvantages of tin oxide thin film material components such as low purity of tin oxide film materials prepared by some methods in the past, difficulty in controlling the shape, and high cost. Tin oxide nanocrystals grow on the surface of FTO conductive glass sheet to obtain tin oxide film material with large specific surface area

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