Efficient CoO nanowire array photocatalysts for H2 generation
Efficient CoO nanowire array photocatalysts for H2 generation
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DOI：
10.1063/1.4898681
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发表时间：
2014-10
影响因子：
4
通讯作者：
Xueying Zhan;Zhenxing Wang;Fengmei Wang;Zhongzhou Cheng;Kai Xu;Qisheng Wang;M. Safdar;Jun He
中科院分区：
文献类型：
--
作者：
Xueying Zhan;Zhenxing Wang;Fengmei Wang;Zhongzhou Cheng;Kai Xu;Qisheng Wang;M. Safdar;Jun He
利用水热法和退火法制备了CoO纳米线阵列。CoO纳米线由组装的CoO纳米颗粒组成，并且可以通过退火温度来控制颗粒尺寸。CoO纳米线阵列具有易制备、可回收、稳定性高等优点。在不同温度下退火的CoO块体、CoO纳米线之间的光催化活性差异的起源可以归因于由于不同CoO颗粒尺寸导致的带边位置的显著偏移。我们的发现为钴基纳米结构的设计和制备提供了一条实用的途径。
CoO nanowire arrays for efficient water-splitting were fabricated via a facile hydrothermal and subsequent annealing method. The CoO nanowire is composed of assembled CoO nanoparticles and the particle size can be controlled by annealing temperatures. CoO nanowire array exhibits advantages of easy fabrication, recyclability, and high stability. The origin of the difference of photocatalytic activity among CoO bulk, CoO nanowires annealed under different temperatures, can be contributed to remarkable shift in the position of the band edge due to different CoO particle sizes. Our finding may provide an avenue in design and fabrication of Co-based nanosturctures for practical applications.