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Jingrui Ye,Mengjuan Teng,Xingyue Qian,Chao Wan,Guangyu He,Haiqun Chen 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.120 No.-
Hydrogen evolution reactions (HER) via water splitting is of significance for electricity-to-fuel conversion. The pursuits of rationally design and facile synthesis method for efficient HER catalysts have long been asubject of interest. In this work, a bimetallic MOF-derived strategy was constructed to realize doping andalloying of transition metal in parallel and Pd-CuCeOx catalyst was prepared, in which Cu served as dopingelement in CeO2 and secondary metal in Pd-Cu alloy. For the as-synthesized Pd-CuCeOx, an overpotentialof 109 mV is needed to reach a current density of 10 mA cm2 with a Tafel slope of only 30.9 mVdec1. With the low content of precious metal, Pd-CuCeOx exhibited a high TOF value of 6.99 s1, which isabout 3.5 times higher than that of commercial Pt/C. The improved HER performance is attributed to thed-band structure modified by alloying and the enhanced electronic coupling caused by doping.