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Process for preparing nitrogen doped micropore titanium dioxide photocatalysis layer of visual light on base of titanium and titanium alloy

A technology of titanium dioxide and photocatalytic layer, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc. It can solve the problems of layer shedding, increase the weight of titanium and titanium alloys, etc., and achieve the removal of odor and harmful bacteria Effect

Inactive Publication Date: 2009-12-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the invention is to solve the problem of preparing TiO on the surface of titanium and titanium alloys at present. 2 The method of visible light photocatalytic layer increases the weight of titanium and titanium alloy and TiO 2 The layer is easy to fall off, and a method for preparing a nitrogen-doped microporous titanium dioxide visible light photocatalytic layer on a titanium and titanium alloy substrate is provided.

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  • Process for preparing nitrogen doped micropore titanium dioxide photocatalysis layer of visual light on base of titanium and titanium alloy

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specific Embodiment approach 1

[0008] Specific Embodiment 1: In this embodiment, the method for preparing a nitrogen-doped microporous titanium dioxide visible light photocatalytic layer on a titanium and titanium alloy substrate is realized according to the following steps: 1. Perform oxygen plasma ion implantation treatment on titanium and titanium alloy, and after implantation Inject 3×10 under the condition of voltage 10~30kV 17 ~8×10 17 ion / cm 2 ; 2. The helium plasma ion implantation is divided into three steps. In the first step, 5×10 17 ~7×10 17 ion / cm 2 , the second step is to inject 2×10 17 ~4×10 17 ion / cm 2 , the third step is to inject 2×10 17 ~4×10 17 ion / cm 2 ; 3. Annealing treatment, annealing at 500-600°C for 1-2 hours, and then annealing at 600-700°C for 1-2 hours; 4. Carrying out argon plasma under the condition of substrate bias voltage of 600-800V Erosion for 3-5 hours to obtain titanium and titanium alloys with micropores on the surface; 5. Nitrogen ion implantation treatment,...

specific Embodiment approach 2

[0010] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, 6×10 17 ion / cm 2 . Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0011] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the helium plasma ion implantation in step 2 is divided into three steps. In the first step, 6×10 17 ion / cm 2 , the second step is to inject 3×10 at the injection voltage of 30kV 17 ion / cm 2 , the third step is to inject 3×10 17 ion / cm 2 . Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention discloses a method for preparing a nitrogen-doped microporous titanium dioxide visible light photocatalytic layer on a titanium and titanium alloy substrate, and relates to a method for preparing a titanium dioxide visible light photocatalytic layer. It solves the problem that the TiO2 photocatalytic material prepared in the prior art will increase the launch weight of the space station and the problem that the material will fall off. Methods: 1. Titanium and titanium alloys are treated with oxygen plasma ion implantation; 2. Helium plasma ion implantation treatment; 3. Annealing treatment; 4. Argon plasma ablation to obtain titanium and titanium alloys with micropores on the surface; 5. Nitrogen ion implantation treatment, that is, preparing a nitrogen-doped microporous titanium dioxide visible light photocatalytic layer on the titanium and titanium alloy substrates. The material obtained by the invention does not fall off, and does not increase the launching weight of the space station.

Description

technical field [0001] The invention relates to a method for preparing a titanium dioxide visible light photocatalytic layer. Background technique [0002] With the continuous extension of the scope of my country's space exploration business, the development of long-term manned space stations in the future has been put on the agenda. Titanium and titanium alloys have low density, high specific strength, high fatigue strength, good crack growth resistance, and low temperature. The reasons for its good toughness and excellent corrosion resistance have become the first choice for the construction of space stations. The manned space station is a completely closed environment. The elimination of environmental odors and harmful bacteria in the space capsule is an important issue related to the living environment and physical health of astronauts. TiO 2 It is a widely used photocatalytic material at present, studies have shown that TiO 2 It can catalyze and decompose various enviro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/48C23F4/00B01J21/06A61L9/22
Inventor 马欣新李金龙孙明仁唐光泽
Owner HARBIN INST OF TECH