Self-assembly of a cobalt(II)-based metal-organic framework as an effective water-splitting heterogeneous catalyst for light-driven hydrogen production.,Acta Crystallographica Section C

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Self-assembly of a cobalt(II)-based metal-organic framework as an effective water-splitting heterogeneous catalyst for light-driven hydrogen production.
Acta Crystallographica Section C ( IF 0.7 ) Pub Date : 2020-05-29 , DOI: 10.1107/s2053229620007044
Yong Dou ₁ , Lu Yang ₁ , Lan Qin ₁ , Yunhui Dong ₁ , Zhen Zhou ₁ , Daopeng Zhang ₁ , Suna Wang ₂

Affiliation

The solar photocatalysis of water splitting represents a significant branch of enzymatic simulation by efficient chemical conversion and the generation of hydrogen as green energy provides a feasible way for the replacement of fossil fuels to solve energy and environmental issues. We report herein the self‐assembly of a Co^II‐based metal–organic framework (MOF) constructed from 4,4′,4′′,4′′′‐(ethene‐1,1,2,2‐tetrayl)tetrabenzoic acid [or tetrakis(4‐carboxyphenyl)ethylene, H₄TCPE] and 4,4′‐bipyridyl (bpy) as four‐point‐ and two‐point‐connected nodes, respectively. This material, namely, poly[(μ‐4,4′‐bipyridyl)[μ₈‐4,4′,4′′,4′′′‐(ethene‐1,1,2,2‐tetrayl)tetrabenzoato]cobalt(II)], [Co(C₃₀H₁₆O₈)(C₁₀H₈N₂)]_n, crystallized as dark‐red block‐shaped crystals with high crystallinity and was fully characterized by single‐crystal X‐ray diffraction, PXRD, IR, solid‐state UV–Vis and cyclic voltammetry (CV) measurements. The redox‐active Co^II atoms in the structure could be used as the catalytic sites for hydrogen production via water splitting. The application of this new MOF as a heterogeneous catalyst for light‐driven H₂ production has been explored in a three‐component system with fluorescein as photosensitizer and trimethylamine as the sacrificial electron donor, and the initial volume of H₂ production is about 360 µmol after 12 h irradiation.

中文翻译：

钴（II）基金属-有机骨架的自组装，作为光驱制氢的一种有效的水分解多相催化剂。

通过有效的化学转化，光分解的太阳光催化代表了酶模拟的重要分支，而氢作为绿色能源的产生提供了替代化石燃料以解决能源和环境问题的可行方法。我们在此报告了由4,4'，4''，4'''-（乙烯-1,1,2,2-四丁基）四苯甲酸构造的基于Co ^II的金属有机骨架（MOF）的自组装酸[或四（4-羧基苯基）乙烯，H ₄ TCPE]和4,4'-联吡啶（bpy）分别作为四点连接和两点连接的节点。这种材料，即，聚[（μ-4,4'-联吡啶基）[μ ₈ -4,4'，4''，4''' - （乙烯-1,1,2,2-四基）tetrabenzoato]钴（II）]，[Co（C ₃₀ H ₁₆ O ₈）（C ₁₀ H ₈ N ₂）] _n，结晶为深红色块状晶体，具有高结晶度，并通过单晶X射线衍射，PXRD，IR，固态UV-Vis和循环伏安法进行了全面表征（CV）测量。该结构中的氧化还原活性Co ^II原子可用作通过水分解产生氢的催化位点。在荧光素为光敏剂，三甲胺为牺牲电子供体，H ₂初始体积为三组分的体系中，探索了这种新型MOF作为光驱动H ₂的非均相催化剂的应用。辐照12小时后的产量约为360 µmol。

更新日期：2020-05-29

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