PHOTOCATALYTIC SYSTEMS COMPRISING CYCLODEXTRIN, C8-C12 CARBOXYLIC ACID AND NANOPARTICLES OF METAL AND/OR OF METAL OXIDES; PREPARATION METHOD THEREOF; AND USE OF THE SYSTEMS TO REMEDIATE POLLUTED WATER

摘要

The present invention relates to systems and methods for remediating water by means of photocatalytic oxidation. Specifically disclosed are photocatalytic systems comprising a cyclodextrin, a C₈-C₁₂ carboxylic acid and nanoparticles (NPs) of metals and/or of metal oxides. The photocatalytic systems developed include: α-cyclodextrin/nonanoic acid/TiO₂ NPs/silver NPs (AgNPs), wherein the nanoparticles of TiO₂ and of Ag are stabilised by the inclusion complex formed by α-cyclodextrin/nonanoic acid; and α-cyclodextrin/nonanoic acid/TiO₂ NPs/mercaptoacetic acid/AgNPs, wherein the nanoparticles of TiO₂ and of Ag are stabilised by the complex formed by α-cyclodextrin/nonanoic acid/mercaptoacetic acid. The invention also relates to methods for preparing the photocatalytic systems, and to the use of same to remediate polluted water.