Iron(III)-bipyridine incorporated metal–organic frameworks for photocatalytic reduction of CO2 with improved performance,Dalton Transactions

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Iron(III)-bipyridine incorporated metal–organic frameworks for photocatalytic reduction of CO2 with improved performance
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-12-8 , DOI: 10.1039/d0dt03500a
Yuan-Ping Wei _{1,

2,

3,

4,

5} , Sizhuo Yang _{6,

7,

8} , Peng Wang _{1,

2,

3,

4,

5} , Jin-Han Guo _{1,

2,

3,

4,

5} , Jier Huang _{6,

7,

8} , Wei-Yin Sun _{1,

2,

3,

4,

5}

Affiliation

Metal–organic frameworks (MOFs) represent an emerging class of platforms to assemble single site photocatalysts for artificial photosynthesis. In this work, we report a new CO₂ reduction photocatalyst (UiO-68-Fe-bpy) based on a robust Zr(IV)-MOF platform with incorporated Fe(bpy)Cl₃ (bpy refers to the 4′-methyl-[2,2′-bipyridine] moiety) via amine–aldehyde condensation. We show that this hybrid catalyst can reduce CO₂ to form CO under visible light illumination with excellent selectivity and enhanced activity with respect to its parent MOF and corresponding homogeneous counterpart. Using steady state and transient absorption (TA) spectroscopy, we show that the enhanced photocatalytic activity of UiO-68-Fe-bpy is attributed to the elongated excited state lifetime of Fe(bpy)Cl₃ after being incorporated to the UiO-68-NH₂ platform. This work demonstrates the great potential of MOFs as a next generation platform for solar fuel conversion.

中文翻译：

铁（III）-联吡啶掺入的金属-有机骨架可改善光催化还原CO2的性能

金属有机框架（MOF）代表了新兴的一类平台，用于组装用于人工光合作用的单部位光催化剂。在这项工作中，我们报告了一种新的CO ₂还原光催化剂（UiO-68-Fe-bpy），该催化剂基于坚固的Zr（IV）-MOF平台并结合了Fe（bpy）Cl ₃（bpy指4'-甲基- [2,2'-联吡啶]部分）通过胺-醛缩合反应。我们证明了这种杂化催化剂可以减少CO ₂相对于其母体MOF和相应的均相对应物，在可见光照射下形成CO具有优异的选择性和增强的活性。使用稳态和瞬态吸收（TA）光谱，我们表明UiO-68-Fe-bpy增强的光催化活性归因于掺入UiO-68-后Fe（bpy）Cl _3的激发态寿命延长。NH ₂平台。这项工作证明了MOF作为太阳能转换的下一代平台的巨大潜力。

更新日期：2020-12-17

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