Metal-Induced Self-Assembly Template for Controlled Growth of ZIF-8 Nanorods,Chemistry of Materials

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Metal-Induced Self-Assembly Template for Controlled Growth of ZIF-8 Nanorods
Chemistry of Materials ( IF 7.2 ) Pub Date : 2020-08-26 , DOI: 10.1021/acs.chemmater.0c02782
Changjoon Keum ₁ , Hyesung Lee ₁ , Choah Kwon ₁ , Byungchan Han ₁ , Sang-Yup Lee ₁

Affiliation

A comprehensive method to prepare a one-dimensional (1D) metal–organic framework (MOF) has attracted research interest because the 1D MOFs are useful as precursor materials for the preparation of highly porous carbon nanorods with outstanding electrical conductivity and mechanical strength, making them particularly suitable for electrochemical applications. Herein, the synthesis of 1D zeolitic imidazolate framework-8 (ZIF-8) nanorods is reported using the metal-induced self-assembly templates of imidazole-functionalized perylenetetracarboxylic diimide (PDI-Hm). The size of PDI-Hm self-assemblies is finely tuned on the nanoscale by the method of metal-induced self-assembly whose surface-exposed metal ions were further exploited as nucleation sites for the growth of ZIF-8. Versatility of the metal-induced self-assembly template for the growth of other 1D MOFs was demonstrated using various transition-metal ions on demands. The size-controlled ZIF-8 nanorods were applied further as a precursor material to produce porous, nitrogen-doped carbon nanorods through the carbonization. The carbon nanorods show decent supercapacitor electrode material performance, with enhanced specific capacitance of 292.2 F g^–1, because of their unique 1D feature with reduced charge transfer resistance and large specific surface area derived from a downscaled template size under 100 nm.

中文翻译：

金属诱导的自组装模板，可控制ZIF-8纳米棒的生长

一种制备一维（一维）金属-有机骨架（MOF）的综合方法引起了研究兴趣，因为一维MOF可用作制备具有出色电导率和机械强度的高度多孔碳纳米棒的前体材料，从而使其成为一种有机材料。特别适合电化学应用。本文中，使用金属诱导的咪唑官能化per四羧酸二酰亚胺（PDI-Hm）自组装模板报道了1D沸石咪唑酸酯骨架8（ZIF-8）纳米棒的合成。PDI-Hm自组装体的大小可以通过金属诱导自组装的方法在纳米尺度上进行微调，该方法的表面暴露金属离子被进一步用作ZIF-8生长的成核位点。通过使用各种过渡金属离子，可以证明金属诱导的自组装模板可用于其他一维MOF的多功能性。将尺寸控制的ZIF-8纳米棒进一步用作前体材料，以通过碳化生产多孔的，掺杂氮的碳纳米棒。碳纳米棒显示出不错的超级电容器电极材料性能，比电容提高了292.2 F g^–1，因为其独特的一维特征具有降低的电荷转移电阻和较大的比表面积，这源于缩小后的模板尺寸（小于100 nm）。

更新日期：2020-09-22

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