Morphology-controllable 3D flower-like TiO2 for UV shielding application

Calliandra like rutile TiO2 hierarchical microspheres with different diameters were successfully prepared by hydrothermal method via altering reaction time. All these as synthesized unique hierarchical microspheres displayed higher UV shielding capability compared with commercial P25 and anatase TiO2. Noticeably, the UV shielding efficiency of these microspheres had a close relation to their diameters and packing density of constituted nanorods. The S-24h-C sample exhibited the highest UV shielding efficiency, which could not only block all UV light below 400 nm but also show poor photocatalytic activity under UV light radiation, indicating its great applied potential in UV-blocking materials.

In this work, we prepare 3D hierarchical flower-like TiO2 with controllable shape by a facile hydrothermal method with the assistance of PVP, and systematically research the relationship between morphologic structure of 3D rutile TiO2 and their UV shielding properties.Figure optionsDownload as PowerPoint slide