Preparing method and application of nanocrystal modified TiO2 thin film material

A thin film material and nanocrystalline technology, which is applied in the field of preparation of nanocrystalline modified TiO2 thin film materials, can solve the problems of insignificant improvement of photoelectric conversion efficiency of TiO2 thin film materials, restricting the application of materials, and poor controllability, etc., and achieves good visible light responsiveness. and photocatalytic activity, good visible light photoelectrochemical performance

Inactive Publication Date: 2018-01-05
苏州罗格特光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing research, the developed TiO 2 Thin film materials have problems such as insignificant improvement in photoelectric conversion efficiency, cumbersome preparation process and poor controllability, which restrict the practical application of the above materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] (1) TiO with a particle size of 200 nm 2 Grinding the nanocrystalline aggregates, adding them into the ethylene glycol solvent after the grinding is sufficient, and after ultrasonic dispersion treatment, it is configured into a solution with a concentration of 0.4 g / ml;

[0017] (2) will contain TiO 2 The solution of the nanocrystal aggregate is placed in a round-bottomed flask, heated to 240 ° C, and nitrogen gas is passed through the solution at the same time. After the heating is completed, a 20% sodium nitrate solution that accounts for 2.5% of the solution volume is added dropwise to the solution. After the dropwise addition was completed overnight, the modified TiO 2 Nanocrystal aggregate solution;

[0018] (3) The modified TiO 2 The nanocrystal aggregate solution was placed in a sealed glass container, and kept in a water bath at 75°C for 24 hours. A film was gradually formed in the sealed glass container, and then the film was taken out from the sealed glass ...

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Abstract

The invention discloses a preparing method and application of a nanocrystal modified TiO2 thin film material. The method comprises the specific steps of preparing a TiO2 nanocrystal aggregate by adopting an ultrasonic solvent hot method, afterwards heating a TiO2 nanocrystal aggregate solution with the protection of nitrogen, dropwise adding a sodium nitrate solution and keeping the TiO2 nanocrystal aggregate solution overnight, finally forming film in a water bath mode, and preparing the nanocrystal modified TiO2 thin film material after drying. The nanocrystal modified TiO2 thin film material is applied to the fields of photoelectrocatalysis degradation of environmental pollutants and photoelectrocatalysis synthesis and has a good effect.

Description

technical field [0001] The invention relates to the technical field of photoelectric thin film materials, in particular to a nanocrystalline modified TiO 2 Preparation methods and applications of thin film materials. Background technique [0002] In today's society, when human beings are facing increasingly serious energy and environmental problems, photocatalytic technology has emerged as the times require, and has shown its superior application prospects. Many novel photocatalytic materials have been developed and exhibit high photocatalytic activity. However, the development of highly efficient and practically applicable photocatalytic materials is still a great challenge. Existing studies mostly use TiO 2 As a photocatalytic material, the wide band gap energy and the significant recombination characteristics of photogenerated electrons and holes make it only able to utilize a limited part of ultraviolet light in solar energy. Therefore, developing new efficient and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/02
Inventor 朱建国况军徐贤德
Owner 苏州罗格特光电科技有限公司
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