▎ 摘　　要

A porous octahedron-folding layered reduced graphene oxide/MIL-96(Al) anchoring Pd, PdBi, PdSn, and PdSnBi nanoparticles (NPs) was prepared by self-assembly and the in situ reduction method and then applied as an electrocatalyst for ethylene glycol (EG) electrooxidation. Comparison of the electrocatalytic activities and stabilities of monometallic and bimetallic counterparts and commercial Pd/C shows that trimetallic PdSnBi@rGO/MIL-96 (PdSnBi/rGM) owns the highest peak current density of up to 195.5 mA cm(-2), which is 7.21 times as high as that of Pd/C, and still retains more than 73.4% of original current density after a 3600 s CA test, superior to Pd/C performance (22.3%). Apparently, through PdSnBi NPs loading and the rGM structure modification, PdSnBi/rGM exhibits superior electrocatalytic performance toward EGOR. The outstanding performance is thanks to the strong electronic effects among Pd, Bi, and Sn, the higher affinity of Bi/Bi(OH)(3) and SnO2 NPs to oxygen-containing species, and the prominent octahedron-folding layered structure and faster electron transfer capability. Besides, the electrooxidation mechanism of EG and the removal process of adsorbed CO(ads) on the Pd surface are proposed. The novel structure design and efficient performance provide an important reference for developing advanced energy catalysts.