We report a Cu‐based metal–organic framework (MOF) decorated by CuO nanostructures as an efficient catalyst for the oxygen evolution reaction (OER). MIL‐53(Cu) was synthesized by a hydrothermal approach using 1,4‐bezenedicarboxylic acid as organic precursor and further annealed at 300°C to form CuO nanostructures on its surface. The produced electrocatalyst, CuO@MIL‐53(Cu), was characterized using various techniques. Under alkaline conditions, the developed electrocatalyst exhibited an overpotential of 801 and 336 mV versus RHE at 10 and 1 mA cm⁻², respectively. The reproducibility of the catalytic performance was validated using several electrodes. It was confirmed that the CuO hair‐like nanostructures grown on MIL‐53(Cu) using thermal treatment exhibit high OER activity, good kinetics and durability. CuO@MIL‐53(Cu) is an economic noble‐metal‐free OER electrocatalyst. It has potential for application as anode material for sustainable energy technologies like batteries, fuel cells and water electrolysis.

中文翻译：

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CuO毛状纳米结构修饰的铜基金属有机骨架：氧释放反应的电催化剂

我们报道了一种由CuO纳米结构修饰的铜基金属有机框架（MOF），它是氧释放反应（OER）的有效催化剂。MIL-53（Cu）是通过水热法合成的，使用1,4-苯二甲酸作为有机前体，并在300°C进一步退火以在其表面形成CuO纳米结构。使用多种技术对制得的电催化剂CuO @ MIL-53（Cu）进行了表征。在碱性条件下，相对于10和1 mA cm ^-2的RHE，已开发的电催化剂表现出801和336 mV的过电势， 分别。使用多个电极验证了催化性能的可重复性。可以确认，通过热处理在MIL-53（Cu）上生长的CuO毛状纳米结构具有较高的OER活性，良好的动力学和耐久性。CuO @ MIL-53（Cu）是一种经济的不含贵金属的OER电催化剂。它有潜力用作可持续能源技术（例如电池，燃料电池和水电解）的阳极材料。