Fuel cells and electrochemical water splitting have attracted wide attention to address the demand of global energy and the depletion of fossil fuels. These promising and renewable energy alternatives implicate three pivotal reactions: oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The design and synthesis of materials for efficient catalysis toward HER, OER, and ORR are of paramount importance. To address these aims, electro- and photoelectro-catalysts based on the controlled pyrolysis of bimetallic amorphous metal–organic frameworks (MOFs) are developed. The present study provides a general method for the design and synthesis of bimetallic amorphous MOFs by merging our liquid–liquid interface synthesis method and the metalloligand approach. As a proof of concept, NEU-5 (= [Zn(FeTpyCOOH)(PF₆)₂]_n), NEU-6 (= [Zn(Ru(terpy*)₂)(PF₆)₂]_n), NEU-7 (= [Fe(Ru(terpy*)₂)(PF₆)₂]_n) and NEU-8 (= [Ti(Ru(terpy*)₂)(PF₆)₂]_n) are successfully synthesized, and subsequently pyrolyzed to prepare Fe₂P@PNDCN, RuP@PNDCN, Fe₃O₄/RuO₂@NEU-7 and Ru₂O/TiN/TiO₂@NEU-8, respectively. These electro- and photoelectro-catalysts exhibit excellent activity for ORR, OER and HER in both acidic and alkaline media.

中文翻译：

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衍生自双金属无定形金属-有机骨架的电催化剂和光催化剂

燃料电池和电化学水分解已引起广泛关注，以满足全球能源需求和化石燃料的枯竭。这些有前途且可再生的能源替代方案涉及三个关键反应：氧还原反应（ORR），氧释放反应（OER）和氢释放反应（HER）。设计和合成用于有效催化HER，OER和ORR的材料至关重要。为了实现这些目标，开发了基于双金属无定形金属-有机骨架（MOF）的受控热解的电催化剂和光催化剂。本研究通过结合我们的液-液界面合成方法和金属配体方法，为双金属非晶MOF的设计和合成提供了一种通用方法。作为概念证明，NEU-5（= [Zn（FeTpyCOOH）（PF₆） ₂ ] _n），NEU-6（= [Zn（Ru（terpy *） ₂）（PF ₆） ₂ ] _n），NEU-7（= [Fe（Ru（terpy *） ₂）（PF ₆） ₂ ] _n）和NEU-8（= [Ti（Ru（terpy *） ₂）（PF ₆） ₂ ] _n）成功合成，然后热解制备Fe ₂ P @ PNDCN，RuP @ PNDCN，Fe ₃ O ₄ / RuO ₂ @ NEU-7和Ru ₂ O / TiN / TiO ₂@ NEU-8。这些电催化剂和光催化剂在酸性和碱性介质中对ORR，OER和HER均具有出色的活性。