论文部分内容阅读
Mesocrystals,which are assemblies of crystallographically oriented nanocrystals,have received increasing attention due to their unique properties such as high crystallinity,high porosity,oriented subunit alignment,and similarity to highly sophisticated biominerals.However,the controlled synthesis of TiO 2 mesocrystals has not been realized until recently,probably because of the difficulty in accurately controlling the reaction processes that produce TiO 2 crystals.In this review,recent advances in the synthesis and applications of TiO 2 mesocrystals are summarized with particular attention paid to the mechanisms of their formation.Three typical pathways for the preparation of TiO 2 mesocrystals are discussed,namely topotactic transformation,direct synthesis in solution,and growth on supports.The potential applications of TiO 2 mesocrystals in lithium ion batteries,photocatalysis,enzyme immobilization,and antireflection materials are also described.
Mesocrystals, which are assemblies of crystallographically oriented nanocrystals, have been attracted increasing attention due to their unique properties such as high crystallinity, high porosity, oriented subunit alignment, and similarity to highly sophisticated biominerals.However, the controlled synthesis of TiO 2 mesocrystals has not been realized until recently, probably because of the difficulty in accurately controlling the reaction processes that produce TiO 2 crystals. In this review, recent advances in the synthesis and applications of TiO 2 mesocrystals are summarized with particular attention paid to the mechanisms of their formation. typical pathways for the preparation of TiO 2 mesocrystals are discussed, that topotactic transformation, direct synthesis in solution, and growth on supports. potential applications of TiO 2 mesocrystals in lithium ion batteries, photocatalysis, enzyme immobilization, and antireflection materials are also described.