Department of Electrical and Computer Engineering, Pusan National University, Geumjeong-gu, Busan-46241, South Korea.
Dalton Trans. 2019 Oct 7;48(39):14808-14819. doi: 10.1039/c9dt03306h.
The effect of the cobalt nitrate hexahydrate/zinc nitrate hexahydrate molar ratio on the physicochemical features of the zeolitic imidazole framework (ZIF) was studied. ZIFs were prepared by using 2-methyl imidazole as the cross-linker at room temperature without any additives in methanol solution. From the obtained results, it was found that the Co/Zn ratio has a tremendous impact on the surface area, crystallinity, pore diameter and electrochemical performance of ZIFs. Upon increasing the Co/Zn content the surface area, pore volume, pore diameter and specific capacitance decreased. The maximum BET surface area was found to be 1043.65 m2 g-1 for ZIF Co/Zn = 0.5. The present work offers a new intuition in relation to the role of the Co/Zn ratio in the synthesis method of ZIFs.
研究了六水合硝酸钴/六水合硝酸锌摩尔比对沸石咪唑酯骨架（ZIF）的物理化学性质的影响。在甲醇溶液中，使用 2-甲基咪唑作为交联剂，在室温下无需任何添加剂即可制备 ZIF。从得到的结果中发现，Co/Zn 比对于 ZIF 的表面积、结晶度、孔径和电化学性能有巨大的影响。随着 Co/Zn 含量的增加，表面积、孔体积、孔径和比电容减小。发现 ZIF Co/Zn=0.5 的最大 BET 表面积为 1043.65 m2·g-1。本工作为 Co/Zn 比在 ZIF 合成方法中的作用提供了新的认识。
