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

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...

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