Three‐Dimensional Ordered Assembly of Thin‐Shell Au/TiO₂ Hollow Nanospheres for Enhanced Visible‐Light‐Driven Photocatalysis

An Au/TiO 2 nanostructure was constructed to obtain a highly efficient visible‐light‐driven photocatalyst. The design was based on a three‐dimensional ordered assembly of thin‐shell Au/TiO 2 hollow nanospheres (Au/TiO 2 ‐3 DHNSs). The designed photocatalysts exhibit not only a very high surface area but also photonic behavior and multiple light scattering, which significantly enhances visible‐light absorption. Thus Au/TiO 2 ‐3 DHNSs exhibit a visible‐light‐driven photocatalytic activity that is several times higher than conventional Au/TiO 2 nanopowders.