Titanium dioxide nano-heterostructure with nanoparticles decorating nanowires for high-performance photocatalysis
Titanium dioxide nano-heterostructure with nanoparticles decorating nanowires for high-performance photocatalysis
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纳米粒子装饰纳米线的二氧化钛纳米异质结构用于高性能光催化
DOI：
10.1016/j.ijhydene.2018.04.150
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发表时间：
2018-05-31
影响因子：
7.2
通讯作者：
Zhao, Jinsheng
中科院分区：
文献类型：
--
作者：
Fu, Honghong;Yang, Liming;Zhao, Jinsheng
在这项工作中，我们合成了装饰TiO 2纳米线的TiO 2纳米颗粒纳米异质结构（TiO 2 NP/NW）。TiO 2纳米颗粒和纳米线都显示出{101}晶面主要暴露的微晶相。结果发现，纳米粒子与纳米线的比例影响TiO 2纳米粒子的分散和它们与TiO 2纳米线的结合，以及光生电荷的分离，并进一步影响材料的光催化活性。具有1：1（NP0.5/NW0.5）的TiO 2 NPs与NW比率的异质结构在罗丹明B降解和水裂解中均显示出高活性和优异的循环稳定性。一个可能的电荷转移机制的二氧化钛纳米粒子/纳米线的混合已提出澄清材料结构和性能之间的相关性。本研究不仅展示了一维纳米异质结构的优势，而且为设计和制备高性能的能源和环境催化剂提供了一种简便的方法。由爱思唯尔有限公司代表氢能出版有限责任公司出版。
In this work, we have synthesized a nano-heterostructure of TiO2 nanoparticles decorating TiO2 nanowires (TiO2 NPs/NWs). Both the TiO2 NPs and NWs show an anatase crystal phase with {101} facet predominately exposed. It is found that the ratio of NPs to NWs affects the dispersion of TiO2 NPs and their combination with TiO2 NWs, as well as the separation of photo-generated charges and further the photocatalytic activity of the material. The heterostructure with a TiO2 NPs to NWs ratio of 1:1 (NP0.5/NW0.5) shows high activity and excellent cycling stability in both Rhodamine B degradation and water splitting. A possible charge transfer mechanism on the TiO2 NPs/NWs hybrid has been proposed to clarify the correlation between material structure and performance. This work not only demonstrates the advantage of 0D-1D nano-heterostructures, but also provides a facile approach of designing and fabricating excellent catalysts for energy and environmental applications. Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.