Precisely tailoring ZIF-67 nanostructures from cobalt carbonate hydroxide nanowire arrays: toward high-performance battery-type electrodes
Precisely tailoring ZIF-67 nanostructures from cobalt carbonate hydroxide nanowire arrays: toward high-performance battery-type electrodes
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DOI：
10.1039/c5ta04509f
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发表时间：
2015-08
影响因子：
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通讯作者：
Dongbo Yu;Liang Ge;Bin Wu;Liang Wu;Huanting Wang;T. Xu
中科院分区：
文献类型：
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作者：
Dongbo Yu;Liang Ge;Bin Wu;Liang Wu;Huanting Wang;T. Xu
具有不同形貌的金属有机框架的可控合成对于许多潜在的应用是非常期望的，但它仍然是一个很大的挑战。在这项研究中，我们首次报道了一种简单的和绿色的路线，在室温下合成ZIF-67的水不溶性碳酸氢钴纳米线在2-甲基咪唑的存在下转化。当碳酸氢钴纳米线生长到泡沫镍衬底上时，合成了四种不同的ZIF-67纳米线形貌。特别地，使用基于ZIF-67的纳米管阵列作为合成介孔Co 3 O 4纳米管阵列的实例，与由碳酸氢钴直接转化的Co 3 O 4纳米线阵列相比，其显示出作为电池型电极的大大增强的性能。我们的研究为制备具有可调形貌的金属有机框架提供了新的见解;此外，合成的ZIF-67基纳米结构是用于其他应用的有前途的材料。
The controllable synthesis of metal–organic frameworks with diverse morphologies is highly desirable for many potential applications, but it still remains a big challenge. In this study, we for the first time report a facile and green route to the synthesis of ZIF-67 at room temperature by transformation of water-insoluble cobalt carbonate hydroxide nanowires in the presence of 2-methylimidazole. When cobalt carbonate hydroxide nanowires were grown onto a Ni foam substrate, four different kinds of ZIF-67 nanocrystal morphologies were synthesized. In particular, a ZIF-67-based nanotube array was used as an example for synthesis of a mesoporous Co3O4 nanotube array, which showed greatly enhanced performance as a battery-type electrode in comparison to the directly converted Co3O4 nanowire array from cobalt carbonate hydroxide. Our study provides a new insight into the preparation of metal–organic frameworks with tunable morphologies; in addition, the as-synthesized ZIF-67-based nanostructures are promising materials for other applications.