High-Entropy Ultrathin Amorphous Metal–Organic Framework-Stabilized Ru(Mo) Dual-Atom Sites for Water Oxidation

Xueqin Mu; Min Yu; Xingyu Liu; Yuru Liao; Fanjiao Chen; Haozhe Pan; Ziyue Chen; Suli Liu; Dingsheng Wang; Shichun Mu

doi:10.1021/acsenergylett.4c02552

journal article·2024-12-13

High-Entropy Ultrathin Amorphous Metal–Organic Framework-Stabilized Ru(Mo) Dual-Atom Sites for Water Oxidation

Xueqin Mu, Min Yu, Xingyu Liu, Yuru Liao, Fanjiao Chen, Haozhe Pan, Ziyue Chen, Suli Liu, Dingsheng Wang, Shichun Mu

ACS Energy Letters· Volume 9· Issue 12

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Source abstract

Abstract

High-entropy metal–organic frameworks (HE-MOFs) offer immense potential in electrocatalysis due to their diverse metallic compositions and high densities of active sites. Integrating bimetallic single-atom catalysts (SACs) with HE-MOFs for enhanced oxygen evolution reaction (OER) performance remains challenging. Here, we stabilize atomically dispersed Ru and Mo in amorphous HE-MOF nanosheets (HE(Ru,Mo)-MOFs) via in situ-formed amorphous high-entropy oxides, elucidating the deprotonation mechanism. Evidence supports the presence of high-density O-bridged Ru and Mo dual-atom sites. The multimetallic composition induces electronic redistribution and balances the oxidation state of metal sites, enhancing intrinsic OER activity. HE(Ru,Mo)-MOFs exhibit low OER overpotentials of 267 mV@10 mA cm –2 and 266 mV@10 mA cm –2 in alkaline freshwater and industrial wastewater, respectively, with exceptional durability surpassing that of commercial RuO 2 catalysts. Mechanistic insights reveal that high atomic dispersion facilitates rapid charge transfer and intermediate transformation, promising advanced catalysts for energy conversion.

Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials Catalysis & surfaces

OpenAlex topics: Metal-Organic Frameworks: Synthesis and Applications · Electrocatalysts for Energy Conversion · Electrochemical Analysis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

Key Laboratory of Advanced Functional Materials of Nanjing, Nanjing Xiaozhuang University, Nanjing 211171, China

School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China

Department of Chemistry, Tsinghua University, Beijing 100084, China

Funding

Qinglan Project of Jiangsu Province of China · Natural Science Foundation of Jiangsu Province · State Key Laboratory of Advanced Technology for Materials Synthesis and Processing · National Natural Science Foundation of China · Key Subject of Ecology of Jiangsu Province · Excellent Scientific and Technological Innovation Team of Colleges and Universities of Jiangsu Province · Scientific and Technological Innovation Team of Nanjing · Innovation Project of Jiangsu Province

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