Preparation, Structure And The Performance Of Photocatalytic Degrading Pollutants Of Polymer/TiO₂ Photocatalytic Functional Composite Particles

It is well known that semiconductor TiO₂ with anatase form could photocatalytic degrade organic pollutants and has been widely used in our daily life. But TiO₂ only absorbs UV energy to generate electron-cavity pairs and electron-cavity pairs recombine easily which lead to the lower photocatalytic activity. Moreover, TiO₂ particles aggregate havily in the organic medium and they may degrade organic medium, so the use of TiO₂ in organic or polymer materials is badly restricted.In this paper, the acrylate monomers with electron attractive groups (such as MMA, MAA) and An with conjugate structure will be considered to modify TiO₂ and prepare the polylmer/TiO₂ composite particles with high photocatalytic activity and stable structure. The polyacrylate/TiO₂ and PAn/ TiO₂ composite particles were prepared by in-situ emulsion polymerization and and chemical oxidation respectively. The relationship between prepare methods; structure and performance of photocatalytic degrading pollutants of polymer/TiO₂ composite particles were studied. In addition, the anti-photocatalytic degrade performance of polymer/TiO₂ was also studied.Firstly, the suface of TiO₂ was modified by coupling agent that ensures the...