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Method for growing titanium dioxide nano-particles on surface of titanium or titanium alloy substrate

A substrate surface and titanium dioxide technology, which is applied in the field of growing titanium dioxide nanoparticles on the surface of titanium or titanium alloy substrates, can solve the problems of repeated recycling of unfavorable catalysts, small and easy to agglomerate, and difficult to settle, and achieve strong practicability, low cost, and high processing temperature low effect

Active Publication Date: 2020-09-11
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, people use sol-gel method to prepare titanium dioxide nanopowder, but because titanium dioxide nanopowder has the disadvantages of being small and easy to agglomerate, difficult to settle, and difficult to recycle, it is not conducive to the repeated recycling of catalysts in practical applications.

Method used

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  • Method for growing titanium dioxide nano-particles on surface of titanium or titanium alloy substrate
  • Method for growing titanium dioxide nano-particles on surface of titanium or titanium alloy substrate
  • Method for growing titanium dioxide nano-particles on surface of titanium or titanium alloy substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Preparation of titanium dioxide nanogel layer on pure titanium surface by treating with hydrogen peroxide and hydrochloric acid

[0049] Using 25×25×3mm pure titanium as the substrate, it was polished with 400 mesh, 800 mesh, 1200 mesh, and 2000 mesh SiC sandpaper, and then ultrasonically cleaned in absolute ethanol and deionized water for 20 minutes to remove oil stains.

[0050] Configure 30%H 2 o 2 and 0.1M HCl mixed solution 30ml (each 15ml), put the titanium substrate into the mixed solution, and move it into an oven at 80°C, keep it warm for 40min, take it out, and wash it with deionized water. Then put the cleaned sample into an oven at 150°C and keep it warm for 1h. like figure 1 As shown, after pure titanium is etched by hydrogen peroxide and hydrochloric acid, a porous sponge-like surface structure is formed with a depth of about 200 nm.

Embodiment 2

[0052] Titanium dioxide nano-films prepared by treating pure titanium surface with sodium chloride solution for 1 hour with hydrothermal treatment

[0053] In this example, the steps for preparing a titanium dioxide nanogel layer on the surface of pure titanium are shown in Example 1, and the appearance is as follows figure 1 As shown, the specific preparation steps are:

[0054] Using 25×25×3mm pure titanium as the substrate, it was polished with 400 mesh, 800 mesh, 1200 mesh, and 2000 mesh SiC sandpaper, and then ultrasonically cleaned in absolute ethanol and deionized water for 20 minutes to remove oil stains.

[0055] Configure 30%H 2 o 2 and 0.1M HCl mixed solution 30ml (each 15ml), put the titanium substrate into the mixed solution, and move it into an oven at 80°C, keep it warm for 40min, take it out, and wash it with deionized water. Then put the cleaned sample into an oven at 150°C and keep it warm for 1h.

[0056] Prepare 5% sodium chloride solution, add it into ...

Embodiment 3

[0058] Preparation of Titanium Dioxide Nanofilms by Hydrothermally Treating Pure Titanium Surface with Sodium Chloride Solution for 5 Hours

[0059] In this example, the steps for preparing a titanium dioxide nanogel layer on the surface of pure titanium are shown in Example 1, and the appearance is as follows figure 1 As shown, the specific preparation steps are:

[0060] Using 25×25×3mm pure titanium as the substrate, it was polished with 400 mesh, 800 mesh, 1200 mesh, and 2000 mesh SiC sandpaper, and then ultrasonically cleaned in absolute ethanol and deionized water for 20 minutes to remove oil stains.

[0061] Configure 30%H 2 o 2 and 0.1M HCl mixed solution 30ml (each 15ml), put the titanium substrate into the mixed solution, and move it into an oven at 80°C, keep it warm for 40min, take it out, and wash it with deionized water. Then put the cleaned sample into an oven at 150°C and keep it warm for 1h.

[0062] Configure 5% sodium chloride solution, add it into a pol...

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Abstract

The invention discloses a method for growing titanium dioxide nano-particles on the surface of a titanium or titanium alloy substrate. The method comprises the following steps of carrying out hydrothermal treatment on the surface of the titanium or titanium alloy substrate by using a hydrothermal solution to grow and form the titanium dioxide nano-particles on the surface of the substrate, and thehydrothermal solution adopts a salt solution containing chloride ions and / or fluoride ions. According to the method, the nano-particles which are uniform and compact in distribution and controllablein size can be obtained on the surface of the titanium or titanium alloy substrate; the method is simple and convenient in process, low in treatment temperature, low in cost, clean, environment-friendly, high in practicability and high in operability, can be used for regulating and controlling the nano-particles with different sizes on the titanium surface, can be used for modifying the surface ofthe titanium and titanium alloy substrate, and provides a new method for titanium surface treatment.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a titanium or titanium alloy substrate with titanium dioxide nanoparticles grown on its surface and a method for growing titanium dioxide nanoparticles on the surface of the titanium or titanium alloy substrate. Background technique [0002] The hydrothermal method uses a specific solution as a reaction medium in a specific container, and creates a high-temperature and high-pressure reaction environment by heating, thereby promoting the dissolution and recrystallization of some insoluble or slightly soluble substances. The surface microstructure constructed by the hydrothermal method is complex and fine, with various shapes, generally in the nanometer scale, and the size-controllable surface nanoparticles can be obtained by adjusting the experimental parameters such as reaction temperature, time, pressure, and reaction medium. [0003] Titanium dioxide nanoparticles a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/12C23C18/04B82Y40/00
CPCC23C18/1216C23C18/04B82Y40/00Y02E10/542
Inventor 赵文杰顾青山王艳君吴文婷王立平薛群基
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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