Large π-conjugated conductive two-dimensional (2D) metal–organic frameworks (MOFs) via the bottom-up approach have recently emerged as novel and interesting 2D materials. For the first time, herein we demonstrate the design and successful bottom-up fabrication of a novel noble-metal-free nickel phthalocyanine-based 2D MOF (NiPc–MOF) for highly efficient water oxidation catalysis. This NiPc–MOF can be easily grown on various substrates. The thin film deposited on FTO showed high catalytic oxygen evolution reaction (OER) activity with a very low onset potential (<1.48 V, overpotential < 0.25 V), high mass activity (883.3 A g⁻¹), and excellent catalytic durability. To the best of our knowledge, this present 2D MOF film catalyst represents the best OER catalytic activity among molecular catalyst-based materials reported so far. This work represents the first synthesis of a nickel phthalocyanine-based 2D MOF material and application of the π-conjugated 2D MOF for water oxidation.

中文翻译：

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新型二维镍酞菁镍基金属-有机骨架，可高效催化水氧化†

通过自下而上的方法，大型的π共轭导电二维（2D）金属-有机骨架（MOF）成为了新颖而有趣的2D材料。在这里，我们首次展示了一种新型的无贵金属镍酞菁镍基二维MOF（NiPc–MOF）的设计和自下而上的成功制造，可用于高效水氧化催化。NiPc–MOF可以轻松在各种基材上生长。沉积在FTO上的薄膜显示出高的催化氧释放反应（OER）活性，且起始电势（<1.48 V，过电势<0.25 V）非常低，质量活度很高（883.3 A g ^-1），并具有出色的催化耐久性。据我们所知，这种2D MOF薄膜催化剂代表了迄今为止报道的基于分子催化剂的材料中最佳的OER催化活性。这项工作代表了基于镍酞菁的2D MOF材料的首次合成以及π共轭2D MOF在水氧化中的应用。