Au nanoparticles has a potential application in bio-sensor, catalysis, and optics field because of its unique optic and electric properties which closely depend on its size and shapes. TiO_2, as a semiconductor photocatalyst, was broadly concerned recently. The report indicates that the photo-induced activity may increase after Au particles deposition. In this paper, near-sphere shaped and non-sphere shaped Au nanoparticles were prepared. And self-assembly pattern was accquired. Comparison of photoca...