Method for deciding coating (or not) titanium dioxide type optical catalyst on metal surface

Abstract

A method for judging whether it is suitable to coat titanium dioxide catalyst on metal surface or not includes comparing work function of metal with work function of titanium dioxide catalyst, confirming that it is suitable to coat titanium dioxide catalyst on metal surface if metal work function is less than work function of titanium dioxide catalyst or otherwise confirming that it is not suitable to coat titanium dioxide catalyst on metal surface.

Description

technical field

[0001] The invention relates to a technology for coating the surface of various metal building materials with a titanium dioxide photocatalyst to make the surface photocatalytically functionalized, in particular to a method for judging whether the metal surface is suitable for coating a titanium dioxide photocatalyst. Background technique

[0002] Titanium dioxide-based photocatalysts are widely used on the surfaces of buildings and building materials because of their photocatalytic oxidation of pollutants and self-cleaning effect. Coating a layer of titanium dioxide film on the exterior wall tiles, exterior wall coatings, and curtain wall glass of buildings can not only play a self-cleaning role, but also photocatalyze the removal of NO in the air 2 and SO 2 ; Coating a layer of titanium dioxide film on the surface of floor tiles and concrete can also play a role in removing air pollutants. The above-mentioned building substrates are usually referred to as...