摘要 : Novel anatase TiO2 hollow boxes and tree-like structures assembled by hollow tubes with a surface area as high as 241.89 m(2)/g can be synthesized in large scale by a simple hydrothermal. method. A distinctive growth mechanism tak... 展开 Novel anatase TiO2 hollow boxes and tree-like structures assembled by hollow tubes with a surface area as high as 241.89 m(2)/g can be synthesized in large scale by a simple hydrothermal. method. A distinctive growth mechanism taking advantage of the gaps and cracks in rectangular particulates with a composition of (TiO2)(2)center dot C4H6O5 center dot 6H(2)O as template has been proposed, which results in a particular structure with a double-layer wall and several inserted layers or separated rooms in the anatase TiO2 hollow boxes. The effects of the reaction time, temperature, and molar ratio between D,L-malic acid and TiCl4 on the formation of anatase TiO2 have been investigated in detail. The results demonstrate that a larger molar ratio Of D,L-malic acid and TiCl4 benefits the formation of TiO2 hollow boxes with larger aspect ratios. Anatase TiO2 tree-like structures assembled by hollow tubes can be obtained when the molar ratio is kept at 5.4. Moreover, these distinctive structures show excellent photocatalytic properties, which would find potential applications in photocatalytic fields. 收起