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Boka Fikadu B.♦, Mahendra G.♦, Nwaji N., Juyoung G.♦, Gicha B.♦, Hyojin K.♦, Asgaran S.♦, Hee-Joon C.♦, Lee J.♦, Defect Engineered Ru-CoMOF@MoS2 HeterointerfaceFacilitate Water Oxidation Process,
Chemistry Europe, ISSN: 1864-564X, DOI: 10.1002/cssc.202402533, pp.1-12, 2025 Abstract: Catalyst design plays a critical role in ensuring sustainable andeffective energy conversion. Electrocatalytic materials need tobe able to control active sites and introduce defects in bothacidic and alkaline electrolytes. Furthermore, producing efficientcatalysts with a distinct surface structure advances ourcomprehension of the mechanism. Here, a defect-engineeredheterointerface of ruthenium doped cobalt metal organic frame(Ru-CoMOF) core confined in MoS2 is reported. A tailored designapproach at room temperature was used to induce defects andform an electron transfer interface that enhanced the electro-catalytic performance. The Ru-CoMOF@MoS2 heterointerfaceobtains a geometrical current density of 10 mA-2 by providinghydrogen evolution reaction (HER) and oxygen evolutionreaction (OER) at small overpotentials of 240 and 289 mV,respectively. Density functional theory simulation shows thatthe Co-site maximizes the evolution of hydrogen intermediateenergy for adsorption and enhances HER, while the Ru-site, onthe other hand, is where OER happens. The heterointerfaceprovides a channel for electron transfer and promotes reactionsat the solid-liquid interface. The Ru-CoMOF@MoS2 modelexhibits improved OER and HER efficiency, indicating that itcould be a valuable material for the production of water-alkaline and acidic catalysts Affiliations:
Boka Fikadu B. | - | other affiliation | Mahendra G. | - | other affiliation | Nwaji N. | - | IPPT PAN | Juyoung G. | - | other affiliation | Gicha B. | - | other affiliation | Hyojin K. | - | other affiliation | Asgaran S. | - | other affiliation | Hee-Joon C. | - | other affiliation | Lee J. | - | Lexington High School (US) |
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