| 摘要 |
The present invention relates to a fabrication of a titanium dioxide nanoparticle in which a silver nanoparticle and a graphene quantum dot are combined and an application of the titanium dioxide nanoparticle as a photocatalyst responsive to visible light, and provides a method fabricating the nanoparticle as a titanium dioxide nanoscale composite through a reduction of a silver ion and a combination with a graphene quantum dot via a hydrothermal synthesis reaction. Also, since the present invention represents a high efficiency under visible light when used as a photocatalyst, the invention suggests applicability of the titanium dioxide nanoparticle as a next-generation photocatalyst. The present invention provides a titanium dioxide nanoscale composite into which a graphene quantum dot and a silver nanoparticle are introduced. The titanium dioxide nanoscale composite has significantly superior photocatalytic efficiency under visible light due to a high activity and a slow recombination rate under visible light region through an introduction of the graphene quantum dot with an up-conversion property and the silver nanoparticle with a strong electron storage capacity, when compared to photocatalyst particles according to a conventional art. |
