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首页> 外文期刊>RSC Advances >Electrochemical and diffuse reflectance study on tetrahedral ε-Keggin-based metal–organic frameworks
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Electrochemical and diffuse reflectance study on tetrahedral ε-Keggin-based metal–organic frameworks

机译：基于四面体ε-Keggin的金属-有机骨架的电化学和漫反射研究

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Herein, two new polyoxometalate-based metal–organic frameworks consisting of Zn-ε-Keggin nodes and semi-rigid organic linkers, [TBA]3[PMo8VMo4VIO36(OH)4Zn4][CPBPC]2 (1) and [TBA]3[PMo8VMo4VIO37(OH)3Zn4][PTABAB][HPTABAB]·7H2O (2) (where CPBPC = 4′-(4-carboxylatophenoxy)-[1,1′-biphenyl]-4-carboxylate and PTABAB = 4,4′-((6-(phenylamino)-1,3,5-triazine-2,4-diyl)bis(azanediyl))dibenzoate), were successfully synthesized. In 1, Zn-ε-Keggin units were bridged by CPBPC fragments to form an eight-fold interpenetrating framework with diamond topology. In 2, the adjacent 2D layers are constructed from Zn-ε-Keggin units and PTABAB moieties interlocked with each other to generate a double layer, which was further packed in an AAA sequence. The electrochemical behaviours of these two compounds were studied, and they exhibit good electrocatalytic activities towards the reduction of nitrite ions. Moreover, their diffuse reflectance was also investigated to obtain their bandgaps of around 1.1 eV, suggesting that they are potential and promising semiconductor materials.
机译：在这里，两个新的基于多金属氧酸盐的金属有机框架由Zn-ε-Keggin节点和半刚性有机连接基[TBA] 3 [PMo < sub> 8 V Mo 4 VI < / sup> O 36 （OH） 4 Zn 4 < / sub> ] [CPBPC] 2 （1）和[TBA] 3 [PMo 8 V Mo 4 < sup> VI O 37 （OH） 3 Zn < sub> 4 ] [PTABAB] [HPTABAB]·7H 2 O（2）（其中CPBPC = 4′-（4-羧基苯乙氧基） ）-[1,1'-联苯] -4-羧酸盐和PTABAB = 4,4'-（（（6-（苯氨基）-1,3,5-三嗪-2,4-二基）双（氮杂二基））二苯甲酸酯），已成功合成。在1中，Zn-ε-Keggin单元被CPBPC片段桥接，形成了具有菱形拓扑的八重互穿框架。在图2中，相邻的2D层是由Zn-ε-Keggin单元和PTABAB部分彼此互锁生成双层构成的，该双层进一步以AAA顺序堆积。研究了这两种化合物的电化学行为，它们对还原亚硝酸根离子表现出良好的电催化活性。此外，还对它们的漫反射率进行了研究，以获得约1.1 eV的带隙，表明它们是潜在且有前途的半导体材料。

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