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

A technology of titanium dioxide and photocatalytic layer, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, metal material coating technology, etc., can solve the problems of layer shedding, increase the weight of titanium and titanium alloys, etc., and achieve the removal of odor and harmful The effect of bacteria

Inactive Publication Date: 2008-11-19
HARBIN INST OF TECH
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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 titan and titan 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 at a voltage of 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, the implantati...

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 relates to a method for preparing a nitrogen doped microporous titania visible light photocatalysis layer on a titanium and titanium alloy substrate, which relates to a method for preparing the titania visible light photocatalysis layer. The method solves the problems that TiO2 photocatalysis materials prepared by the prior art can increase the throw weight of a space station and can fall off. The method is as follows: firstly, oxygen plasma ion injection treatment is performed on titanium and titanium alloy; secondly, helium plasma ion injection treatment is performed; thirdly, annealing treatment is performed; fourthly, argon plasma denudation is performed and the titanium and the titanium alloy with micropores formed on the surfaces are obtained; fifthly, nitrogen ion injection treatment is performed, namely the nitrogen doped microporous titania visible light photocatalysis layer is obtained by preparation on the titanium and titanium alloy substrate. The materials obtained by the method can not fall off and do not increase the throw 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, the development of long-term manned space stations in the future has been put on the agenda. Titanium and titanium alloys have become the preferred materials for building space stations because of their low density, high specific strength, high specific fracture toughness, good fatigue strength, good crack growth resistance, good low temperature toughness and excellent corrosion resistance. The manned space station is a completely closed environment, and 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...

Claims

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Application Information

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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
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