Hexagonal nanoplates of NiO/CoO/Fe2O3 composite acting as an efficient photocatalytic and electrocatalytic water oxidation catalyst.
Hexagonal nanoplates of NiO/CoO/Fe2O3 composite acting as an efficient photocatalytic and electrocatalytic water oxidation catalyst.
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DOI：
10.1039/c5dt02046h
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发表时间：
2015-08
影响因子：
4
通讯作者：
Yukun Zhao;Yan Zhang;Yong Ding;Mindong Chen
中科院分区：
文献类型：
--
作者：
Yukun Zhao;Yan Zhang;Yong Ding;Mindong Chen
采用简单的共沉淀-水热法首次制备了具有不规则形状纳米颗粒的六方片状NiO/CoO/Fe 2 O3复合材料。通过多种技术（TEM、HRTEM、PXRD、EDX、ICP-AES、BET和XPS）表征NiO/CoO/Fe 2 O3复合物以确认其结构和组成。NiO/CoO/Fe 2 O3复合材料的这种结构可以提高水氧化的光催化和电催化性能。与NiO、CoO和Fe_2O_3相比，NiO/CoO/Fe_2O_3复合材料具有更低的过电位和更小的Tafel斜率（49 mV dec（-1））。同时，该复合材料具有有益的铁磁性质和上级稳定性;因此，它可以重复使用而没有任何活性损失。
A unique hexagonal sheet-shaped NiO/CoO/Fe2O3 composite with irregularly shaped nanoparticles was fabricated for the first time through a simple co-precipitation and hydrothermal method. The NiO/CoO/Fe2O3 composite was characterized by numerous techniques (TEM, HRTEM, PXRD, EDX, ICP-AES, BET, and XPS) to confirm its structure and composition. This structure of the NiO/CoO/Fe2O3 composite may enhance the photocatalytic and electrocatalytic performance for water oxidation. Compared with NiO, CoO and Fe2O3, the NiO/CoO/Fe2O3 composite exhibits a lower overpotential and a much smaller Tafel slope of 49 mV dec(-1) for water oxidation. At the same time, the composite possesses beneficial ferromagnetic properties and superior stability; thus, it can be used repeatedly without any loss in activity.