Preparation And Photo-catalytic Properties Of The Visible Catalytic Materials Hybrid Gold Nanoparticles

One of the most attention environmental problems is water pollution. Advanced oxidation processes(AOPs) is a promising water pollution treatment. With the society advocate green oxidation process, TiO₂ photocatalysis and metallic porphyrin and phthalocyanine bionic catalysis among (AOPs) stand out from the crowd.TiO₂ is recognized as the ideal"environmentally friendly catalysts". However, it can only utilize ultraviolet light of sunlight, in order to improve its photocatalytic activity, we modify TiO₂ with gold nanoparticles . In visible area ,metallic porphyrin and phthalocyanine have good catalytic activity, according to research shows that porphyrin modify with suck group may raise activity,so this paper introduce carboxyl; Because of SPR effect , gold nanoparticles can oxidize pollutants under visible light illumination. Under strong ultraviolet light, electrons of gold can transfer from 5d to 6sp, so gold nanoparticles can use the full spectrum of the sun. Gold nanoparticles hybrid four carboxyl zinc porphyrin and phthalocyanine are expected to have a good photocatalytic effect.This paper is divided into four chapters : the first chapter details visible catalytic materials and nanometer gold research background, and this project issues basis and expounds the research plan ; The second chapter TEM, XPS, XRD characterization prove gold hybrid TiO₂-NTA synthesis success by ultraviolet reduction method and we examines the influence of pH and gold content on TiO₂-NTA photocatalytic and through quenches experiment we investigate the change of oxidation species before and after the load ; The third chapter we examines the preparation of metal phthalocyanine and discusses its best catalytic conditions with phenol as the substrate and air as oxygents under visible light and we also speculate the catalytic reaction mechanism . The fourth chapter we examines the preparation of gold hybrid four carboxyl zinc porphyrin and phthalocyanine , we also investigate the catalyst of single and double load under Xenon lamp and visable light irradiation...