{"title":"Interfacial Charge Transfer Modulation in Laser-Synthesized Catalysts for Efficient Oxygen Evolution","authors":"Dong Hyeon Lee, Rahul Kerkar, Deepak Arumugam, Theerthagiri Jayaraman, Shankar Ramasamy, Soorathep Kheawhom, Myong Yong Choi","doi":"10.1039/d4ta06794k","DOIUrl":null,"url":null,"abstract":"Advancements in laser-based material development have enabled precise engineering of catalysts, thus promoting efficient and sustainable water-splitting reactions. This study presents a green approach for synthesizing a layered double hydroxide (LDH)-based catalyst on nickel foam (NF) using pulse-laser irradiation in liquids and microwave processes. The enhanced catalytic efficiency of NiFe-based LDH compared to IrO2/NF is demonstrated by its low overpotential (η ~ 292 mV), high current density, and enhanced charge transfer kinetics. Density functional theory studies portrayed the tailoring phenomenon of Fe on the electronic structure of the material, boosting its performance in the oxygen evolution reaction (OER). This study further explores the effective tuning of Fe insertion on the structural, electronic, and catalytic properties of Ni(OH)2 and NiFe LDHs, revealing on the change in the band gap (from 1.77 eV to 1.81 eV) and intrinsic magnetic moment (from 8 B to 20.3B). Additionally, the catalytic assessment showed superior OER performance, a reduction in η, and a 57% efficiency improvement in NiFe LDH, aligning with experimental findings and demonstrating enhanced catalytic effect in NiFe LDH/Ni(OH)2/NF toward OER. These results highlight the promising potential of laser-mediated techniques in fabricating efficient and cost-effective OER catalysts for sustainable energy production.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":null,"pages":null},"PeriodicalIF":10.7000,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry A","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1039/d4ta06794k","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Advancements in laser-based material development have enabled precise engineering of catalysts, thus promoting efficient and sustainable water-splitting reactions. This study presents a green approach for synthesizing a layered double hydroxide (LDH)-based catalyst on nickel foam (NF) using pulse-laser irradiation in liquids and microwave processes. The enhanced catalytic efficiency of NiFe-based LDH compared to IrO2/NF is demonstrated by its low overpotential (η ~ 292 mV), high current density, and enhanced charge transfer kinetics. Density functional theory studies portrayed the tailoring phenomenon of Fe on the electronic structure of the material, boosting its performance in the oxygen evolution reaction (OER). This study further explores the effective tuning of Fe insertion on the structural, electronic, and catalytic properties of Ni(OH)2 and NiFe LDHs, revealing on the change in the band gap (from 1.77 eV to 1.81 eV) and intrinsic magnetic moment (from 8 B to 20.3B). Additionally, the catalytic assessment showed superior OER performance, a reduction in η, and a 57% efficiency improvement in NiFe LDH, aligning with experimental findings and demonstrating enhanced catalytic effect in NiFe LDH/Ni(OH)2/NF toward OER. These results highlight the promising potential of laser-mediated techniques in fabricating efficient and cost-effective OER catalysts for sustainable energy production.
期刊介绍:
The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.