{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T14:27:24Z","timestamp":1785421644173,"version":"3.56.0"},"reference-count":34,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2026,5,15]],"date-time":"2026-05-15T00:00:00Z","timestamp":1778803200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Shandong Province Postdoctoral Innovation Seed Cultivation Program","award":["SDZZ-ZR-202501462"],"award-info":[{"award-number":["SDZZ-ZR-202501462"]}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["22076105"],"award-info":[{"award-number":["22076105"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"award":["22076105"],"award-info":[{"award-number":["22076105"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Electrochemical water splitting for hydrogen production is a key technological route toward the large-scale generation of green hydrogen. However, the anodic oxygen evolution reaction (OER) suffers from sluggish kinetics and high overpotential, necessitating the development of non-noble metal catalysts that simultaneously possess low cost, high activity, and excellent stability. In this work, a nitrogen-doped graphene quantum dots@nickel\u2013iron layered double hydroxide (N-GQDs@NiFe-LDH) composite catalyst was in situ constructed via a facile hydrothermal strategy. Benefiting from the electronic modulation and structural confinement effects of N-GQDs, the intrinsic catalytic activity and structural stability of the catalyst were simultaneously enhanced. The as-prepared catalyst requires an overpotential of only 320 mV to deliver a current density of 500 mA cm\u22122 and maintains 98% of its initial activity after 100 h of chronoamperometric stability testing, demonstrating promising potential for practical applications. Multiscale characterizations revealed that N-GQDs formed strong electronic interactions with Ni\/Fe active sites at the interface, significantly enhanced interfacial electron transport, and accelerated the OER kinetics. This study demonstrates that the N-GQDs@NiFe-LDH catalytic system constructed via an interfacial heterostructure engineering strategy provides a new insight for the rational design and development of efficient non-noble-metal OER electrocatalysts.<\/jats:p>","DOI":"10.3390\/ma19102081","type":"journal-article","created":{"date-parts":[[2026,5,15]],"date-time":"2026-05-15T14:19:29Z","timestamp":1778854769000},"page":"2081","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Highly Dispersed N-Doped Graphene Quantum Dot-Assisted NiFe Bimetallic Sites for Efficient Water Oxidation"],"prefix":"10.3390","volume":"19","author":[{"given":"Yongbo","family":"Wang","sequence":"first","affiliation":[{"name":"College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China"},{"name":"Laoshan Laboratory, Qingdao 266100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Jin","sequence":"additional","affiliation":[{"name":"College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanfei","family":"Fan","sequence":"additional","affiliation":[{"name":"College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guanwei","family":"Cui","sequence":"additional","affiliation":[{"name":"College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bo","family":"Tang","sequence":"additional","affiliation":[{"name":"College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China"},{"name":"Laoshan Laboratory, Qingdao 266100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"319","DOI":"10.1016\/j.ijhydene.2025.02.257","article-title":"Green hydrogen for a sustainable future: A review of production methods, innovations, and applications","volume":"111","author":"Anand","year":"2025","journal-title":"Int. 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