微球
光催化
材料科学
多孔性
气溶胶
纳米颗粒
化学工程
喷雾干燥
纳米技术
复合材料
化学
催化作用
工程类
有机化学
作者
Chao Tang,Longfei Liu,Yali Li,Zhenfeng Bian
标识
DOI:10.1016/j.apcatb.2016.08.006
摘要
TiO2 mesocrystals significantly enhanced the charge separation owing to the oriented superstructures (less internal defects) and porous properties (more active sites), which was useful for applications from photocatalysis to optoelectronics. In this work, ultrasound assisted aerosol-spray method followed by topotactic transformations was adopted to fabricate TiO2 hierarchical hollow microspheres. The unique structure was assembled by TiO2 mesocrystal nanosheets. The TiO2 mesocrystal hollow microspheres can greatly improve the photocatalytic performance. Furthermore, with the addition of Au3+ species in the precursor solution, ultrafine Au nanoparticles (3–4 nm) were uniformly deposited on the surface of TiO2 hollow microspheres. It shows great significance for the development and application of the TiO2 mesocrystals.
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