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dc.contributor.authorGuo, Feng
dc.contributor.authorYang, Hui
dc.contributor.authorLiu, Lingmei
dc.contributor.authorHan, Yu
dc.contributor.authorAl-Enizi, Abdullah M.
dc.contributor.authorNafady, Ayman
dc.contributor.authorKruger, Paul E.
dc.contributor.authorTelfer, Shane G.
dc.contributor.authorMa, Shengqian
dc.date.accessioned2019-05-21T13:01:20Z
dc.date.available2019-05-21T13:01:20Z
dc.date.issued2019
dc.identifier.citationGuo F, Yang H, Liu L, Han Y, Al-Enizi AM, et al. (2019) Hollow capsules of doped carbon incorporating metal@metal sulfide and metal@metal oxide core–shell nanoparticles derived from metal–organic framework composites for efficient oxygen electrocatalysis. Journal of Materials Chemistry A 7: 3624–3631. Available: http://dx.doi.org/10.1039/c8ta11213d.
dc.identifier.issn2050-7488
dc.identifier.issn2050-7496
dc.identifier.doi10.1039/c8ta11213d
dc.identifier.urihttp://hdl.handle.net/10754/652980
dc.description.abstractDurable and inexpensive catalysts for the reduction of molecular oxygen and evolution of oxygen from water are desirable for electrochemical applications. However, going beyond state-of-the-art catalysts that are based on expensive noble metals remains a major challenge. Recently, nanostructured composites of conductive carbons and earth-abundant metals or metal oxides have emerged as promising electrocatalysts. Herein, we report a versatile and inexpensive synthetic method for the production of metal@metal sulfide core-shell nanoparticles (metal = cobalt, nickel) embedded in the walls of sulfur- and/or nitrogen-doped hollow carbon capsules. Metal oxide nanoparticle shells were also generated as an alternative to the metal sulfide shells. The fabrication of these materials was achieved via the thermal decomposition of sacrificial metal-organic framework nanocrystals coated with a metal-tannic acid coordination polymer shell, which delivered zerovalent metal nanoparticles embedded in the walls of the nitrogen-doped hollow carbon capsules. Subsequent pyrolysis processing in the presence of thiourea produced the metal sulfide nanoparticle shell. Alternatively, an oxide shell was generated under oxidizing conditions. The supported metal@metal sulfide and metal@metal oxide core-shell nanoparticles proved to be excellent catalysts for the electrochemical reduction of oxygen and evolution of oxygen from water, and they were far superior to analogous zerovalent metal nanoparticles. The materials produced accordingly allow the elucidation of key structure-activity relationships, and these insights reveal promising next-generation catalysts for important electrochemical processes that are derived from earth-abundant components.
dc.description.sponsorshipWe acknowledge the financial support from University of South Florida. We extend our sincere appreciation to the Deanship of Scientific Research at King Saud University for funding this project through Research Group (RG #236) and RSSU for their technical support.
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttps://pubs.rsc.org/en/Content/ArticleLanding/2019/TA/C8TA11213D#!divAbstract
dc.titleHollow capsules of doped carbon incorporating metal@metal sulfide and metal@metal oxide core–shell nanoparticles derived from metal–organic framework composites for efficient oxygen electrocatalysis
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentChemical Science Program
dc.contributor.departmentNanostructured Functional Materials (NFM) laboratory
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of Materials Chemistry A
dc.contributor.institutionDepartment of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL, 33620, , United States
dc.contributor.institutionChongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, 16 Juxian Rd, Fuling ChongQing, 408100, , China
dc.contributor.institutionChemistry Department, College of Science, King Saud University, Riyadh, 11451, , , Saudi Arabia
dc.contributor.institutionChemistry Department, Faculty of Science, Sohag, 82524, , China
dc.contributor.institutionMacDiarmid Institute for Advanced Materials and Nanotechnology, Department of Chemistry, University of Canterbury, Christchurch, 8140, , , New Zealand
dc.contributor.institutionMacDiarmid Institute for Advanced Materials and Nanotechnology, Institute of Fundamental Sciences, Massey University, Palmerston North, 4442, , , New Zealand
kaust.personLiu, Lingmei
kaust.personHan, Yu


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