DataVXChemistry of MaterialsPaper
journal article·2026-07-14

Postsynthesis Construction of Distorted Fe Sites in NiAl Layered Double Hydroxides for the Oxygen Evolution Reaction

Juan Wen, Fang Wang, Jingyuan Li, Yujie Wen, Xiaoli Xia, Zhonghan Feng, Zhengting Zhang, Xiaokang Ke, Wei Li, Sheng Tang, Luming Peng

Chemistry of Materials· Volume 38· Issue 13
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Source abstract

Abstract

Regulating the local coordination environment of active sites is an effective strategy to enhance the intrinsic activity of layered double hydroxides (LDHs) for the oxygen evolution reaction (OER). Here we report a controlled postsynthesis Fe incorporation approach that uses NiAl-LDH as a structurally robust host to construct NiAl(a)-Fe(e)-LDH with distorted local Fe coordination environments through alkali treatment and ultrasonic assistance. The resulting catalyst exhibits superior OER performance compared to counterparts with similar Fe content, highlighting the critical role of Fe coordination. Solid-state NMR and X-ray absorption fine structure reveal that ultrasonic-assisted Fe incorporation induces Fe–O lattice distortion and modifies the local electronic states of Fe. Density functional theory calculations show that these distorted environments upshift the d-band center and lower the *OOH formation energy barrier, thereby accelerating OER kinetics. This work establishes a direct correlation between local Fe coordination, electronic structure, and catalytic activity and provides a general strategy for active-site engineering in LDH-based OER electrocatalysts.
Source: openalex_inverted_index · Quality: baseline

Research context

Catalysis & surfaces

OpenAlex topics: Layered Double Hydroxides Synthesis and Applications · Electrocatalysts for Energy Conversion · Ammonia Synthesis and Nitrogen Reduction

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

Affiliations

State Key Laboratory of Coordination Chemistry, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Jiangsu Key Laboratory of Clean Energy Catalysis and Intelligent Green Chemical Engineering, School of Chemistry and Chemical Engineering

Nanjing University

School of Environmental and Chemical Engineering

Jiangsu University of Science and Technology

Jiangsu Key Laboratory of Vehicle Emissions Control

Frontiers Science Center for Critical Earth Material Cycling (FSC-CEMaC)

Funding

National Key Research and Development Program of China Stem Cell and Translational Research · Research Funds for the Frontiers Science Center for Critical Earth Material Cycling, Nanjing University · NSFC?Royal Society Joint Program · Royal Society and Newton Fund for a Royal Society?Newton Advanced Fellowship · National Natural Science Foundation of China (NSFC) · Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions

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