Prismatic Al-MOF composite rGO immobilized PdBiMn alloy catalyst for facilitating ethylene glycol electrooxidation

Abstract

Establishing strong interfacial interactions through novel support materials and poly-metallic alloys is an effective method to boost the catalytic performance for electrocatalytic alcohols oxidation. Herein, PdBiMn particles embedded pleated layered rGO-modified novel prismatic Al-based metal-organic framework (Al2(OH)2(H2O)2[C10O8H2] or MIL-118A) composites were fabricated via a simple hydrothermal-impregnation reduction approach and employed in ethylene glycol oxidation reaction (EGOR). It is noticed that the strong electronic effects of PdBiMn alloys and the strong adsorption of oxygened species could alter the electronic structure of Pd and facilitate the removal of toxic species, while the rGO/MIL-118A strongly fixes abundant PdBiMn alloys, providing more active sites and accelerating the interfacial electron transfer. Impressively, the forward peak current density of trimetallic PdBiMn@rGO/MIL-118A catalyst is 239.62 mA cm−2, it is almost 8.86 times greater than that of Pd/C. Additionally, after 3600 s chronoamperometry test, the current density of trimetallic catalyst retains about 75.54% of the initial current density.