Method for preparing TiO2 multi-scale micro-nano composite structure on titanium substrate

A technology of micro-nano composite structure and micro-nano structure, applied in ion implantation plating, metal material coating process, coating, etc., can solve problems such as difficult recycling and reuse, easy agglomeration, easy generation of impurities, etc., to achieve Accelerated photogenerated electron transfer rate, small charge transfer impedance, improved adsorption performance and light absorption performance

Inactive Publication Date: 2019-04-05
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Titanium dioxide with a three-dimensional structure constructed by chemical methods such as hydrothermal method and sol-gel method is mainly a nano-scale spherical structure, which is prone to agglomeration and difficult to recycle and reuse.
The TiO based on the colloidal crystal template technology 2 The structure is mainly a three-dimensional ordered pore structure, but the structure of this structure still needs to be filled with the sol-gel method or deposition method, and the steps are relatively complicated
There are also methods that combine ultrafast laser with hydrothermal and sol-gel methods, but these methods have many steps and the resulting structure is single, which is easy to produce impurities and pollute the environment

Method used

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  • Method for preparing TiO2 multi-scale micro-nano composite structure on titanium substrate
  • Method for preparing TiO2 multi-scale micro-nano composite structure on titanium substrate
  • Method for preparing TiO2 multi-scale micro-nano composite structure on titanium substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: First, a femtosecond laser is used to etch the surface of a pure Ti sheet in deionized water to prepare a first-level micron structure. The laser parameters are: frequency: 1khz, pulse width 187fs, laser energy density: E=10.78J / cm 2 , scanning speed: v=400μm / s; then place the Ti sheet after laser etching in absolute ethanol and ultrasonically clean it for 5 minutes, and then use magnetron sputtering for 15 minutes to coat gold film on the surface of the Ti sheet after ultrasonic cleaning; The final Ti sheet was placed in a muffle furnace for heat treatment at a heating rate of 5°C / min. After the temperature was raised to 750°C, the temperature was kept for 4 hours, and then cooled with the furnace temperature to prepare a secondary nanostructure, and finally a rutile-type nanostructure loaded with gold particles was obtained. TiO 2 Multiscale composite micro-nanostructures.

Embodiment 2

[0027] Example 2: First, a femtosecond laser is used to etch the surface of a pure Ti sheet in deionized water to prepare a first-level micron structure. The laser parameters are: frequency: 1khz, pulse width 187fs, laser energy density: E=10.78J / cm 2, scanning speed: v=400μm / s; then place the Ti sheet after laser etching in absolute ethanol and ultrasonically clean it for 5 minutes, and then use magnetron sputtering for 15 minutes to coat gold film on the surface of the Ti sheet after ultrasonic cleaning; The final Ti sheet was placed in a muffle furnace for heat treatment at a heating rate of 5°C / min. After the temperature was raised to 800°C, it was kept for 8 hours, and cooled with the furnace temperature to prepare a secondary nanostructure, and finally obtained a rutile-type nanostructure loaded with gold particles. TiO 2 Multiscale composite micro-nanostructures.

Embodiment 3

[0028] Example 3: First, a femtosecond laser is used to etch the surface of a pure Ti sheet in deionized water to prepare a first-level micron structure. The laser parameters are: frequency: 1khz, pulse width 187fs, laser energy density: E=10.78J / cm 2 , scanning speed: v=400μm / s; then place the Ti sheet after laser etching in absolute ethanol and ultrasonically clean it for 5 minutes, and then use magnetron sputtering for 15 minutes to coat gold film on the surface of the Ti sheet after ultrasonic cleaning; The final Ti sheet was placed in a muffle furnace for heat treatment at a heating rate of 5°C / min. After the temperature was raised to 800°C, it was kept for 4 hours, and cooled with the furnace temperature to prepare a secondary nanostructure, and finally a rutile-type nanostructure loaded with gold particles was obtained. TiO 2 Multiscale composite micro-nanostructures.

[0029] Compared with Example 1 and 3, the laser parameters are the same, the heat treatment holding ...

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Abstract

The invention relates to the technical field of preparation of a surface micro-nano functional structure, in particular to a method for preparing a TiO2 multi-scale micro-nano composite structure on atitanium substrate. Firstly, a ultrafast laser is used for etching the surface of a pure Ti sheet in deionized water or absolute ethanol to prepare a first-level micro-structure, and ultrasonic cleaning is performed; then the surface of the laser-etched Ti sheet is subjected to gold film plating by magnetron sputtering; and finally, the Ti sheet after gold film plating is placed in a muffle furnace for heat treatment, a second-level nanostructure is prepared on the surface of the micro-structure to obtain the crystal type TiO2 multi-scale composite micro-nano structure.

Description

technical field [0001] The invention relates to the technical field of preparation of surface micro-nano functional structures, specifically a method for preparing TiO on a titanium substrate. 2 Methods for multiscale micro-nano composite structures. Background technique [0002] TiO 2 Because of its high chemical stability, non-toxic and harmless, low cost and other advantages, it is widely used in photocatalysis, photoelectric conversion, corrosion resistance and antifouling, medical treatment, military and other fields. [0003] At present, there are many kinds of three-dimensional TiO 2 Structural methods: mainly include hydrothermal method, sol-gel method and colloidal crystal template technology. The three-dimensional structure of titanium dioxide constructed by chemical methods such as hydrothermal method and sol-gel method is mainly a nano-scale spherical structure, which is prone to agglomeration and difficult to recycle and reuse. The TiO based on the colloidal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/02C23C14/16C23C14/35C23C14/58
CPCC23C14/021C23C14/165C23C14/35C23C14/5806C23C14/5853
Inventor 程永健宋娟
Owner JIANGSU UNIV
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