Controllable Synthesis of Hexagonal WO3 Nanoplates for Efficient Visible-Light-Driven Photocatalytic Oxygen Production
Controllable Synthesis of Hexagonal WO3 Nanoplates for Efficient Visible-Light-Driven Photocatalytic Oxygen Production
复制标题
六方 WO3 纳米板的可控合成用于高效可见光驱动光催化制氧
DOI：
10.1002/asia.201601471
复制
发表时间：
2017-02-16
影响因子：
4.1
通讯作者：
Yang, Hua Gui
中科院分区：
文献类型：
--
作者：
Wang, Yu Lei;Wang, Xue Lu;Yang, Hua Gui
Facilitating charge-carrier separation and transfer is fundamentally important to improve the photocatalytic performance of semiconductor materials. Herein, two-dimensional hexagonal WO3 nanoplates were synthesized by a two-step route: rapid evaporation and solidphase sintering. The as-prepared WO3 exhibits an enhanced activity of photocatalytic water oxidation compared to bulk monoclinic WO3. The electron dynamics analysis reveals that a more efficient charge-carrier separation in the former can be obtained, the origin of which can be attributed to an increased number of surface defects in hexagonal WO3 nanoplates. This work not only presents a novel and simple method to produce two-dimensional hexagonal WO3 nanoplates, but also demonstrates that surface defects and two-dimensional geometric structures can promote the charge separation, which may be extended to the design of other efficient photocatalysts.
