Photocatalyst for removing gas organic pollutants in space closed environment and preparation method thereof

Abstract

The invention discloses a photocatalyst for removing gas organic pollutants in a space closed environment and a preparation method thereof. The catalytic material is non-toxic and odorless and can bein long-term contact with a human body. The catalyst is good in catalytic performance and simple and convenient to prepare, a catalytic reaction can be automatically generated under the condition of light source irradiation, and products are water and carbon dioxide and are harmless to a human body and the catalyst can be used on a large scale at low cost.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a photocatalyst for removing gaseous organic pollutants in a closed space environment and a preparation method thereof. Background technique [0002] Gas organic pollutants are the main components of indoor pollution. In the field of manned spaceflight, once gas pollution in the cabin occurs in the orbital environment, due to airtightness and the residence time of the human body, it will be far longer than the ground environment, and the space environment with the combined effects of microgravity, cosmic rays, noise and other factors will be more severe. Harmful to the health of astronauts, long-term exposure to such pollutants will significantly increase the possibility of carcinogenic, teratogenic, and mutagenic. [0003] At present, indoor organic pollutants are often removed by ventilation, but obviously this method cannot be applied to the environment inside the space cap...

AI Technical Summary

Problems solved by technology

But at the same time, the use of titanium dioxide as a catalyst for catalysis faces defects such as a large band gap (so the requirement for excitation energy is high), and electron-hole recombination is easy, so further modification is required.

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