Manganese deception on graphene and implications in catalysis

Simple item page
dc.citation.firstpage623en_US
dc.citation.journalTitleCarbonen_US
dc.citation.lastpage631en_US
dc.citation.volumeNumber132en_US
dc.contributor.authorYe, Ruquanen_US
dc.contributor.authorDong, Juncaien_US
dc.contributor.authorWang, Luqingen_US
dc.contributor.authorMendoza-Cruz, Rubénen_US
dc.contributor.authorLi, Yilunen_US
dc.contributor.authorAn, Peng-Feien_US
dc.contributor.authorYacamán, Miguel Joséen_US
dc.contributor.authorYakobson, Boris I.en_US
dc.contributor.authorChen, Dongliangen_US
dc.contributor.authorTour, James M.en_US
dc.date.accessioned2019-12-12T17:25:31Zen_US
dc.date.available2019-12-12T17:25:31Zen_US
dc.date.issued2018en_US
dc.description.abstractHeteroatom-doped metal-free graphene has been widely studied as the catalyst for the oxygen reduction reaction (ORR). Depending on the preparation method and the dopants, the ORR activity varies ranging from a two-electron to a four-electron pathway. The different literature reports are difficult to correlate due to the large variances. However, due to the potential metal contamination, the origin of the ORR activity from “metal-free” graphene remains confusing and inconclusive. Here we decipher the ORR catalytic activities of diverse architectures on graphene derived from reduced graphene oxide. High angle annular dark field scanning transmission electron microscopy, X-ray absorption near edge structure, extended X-ray absorption fine structure, and trace elemental analysis methods are employed. The mechanistic origin of ORR activity is associated with the trace manganese content and reaches its highest performance at an onset potential of 0.94 V when manganese exists as a mononuclear-centered structure within defective graphene. This study exposes the deceptive role of trace metal in formerly thought to be metal-free graphene materials. It also provides insight into the design of better-performing catalyst for ORR by underscoring the coordination chemistry possible for future single-atom catalyst materials.en_US
dc.identifier.citationYe, Ruquan, Dong, Juncai, Wang, Luqing, et al.. "Manganese deception on graphene and implications in catalysis." <i>Carbon,</i> 132, (2018) Elsevier: 623-631. https://doi.org/10.1016/j.carbon.2018.02.082.en_US
dc.identifier.digitalnihms948821en_US
dc.identifier.doihttps://doi.org/10.1016/j.carbon.2018.02.082en_US
dc.identifier.urihttps://hdl.handle.net/1911/107876en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Elsevieren_US
dc.subject.keywordMetal-free catalysten_US
dc.subject.keywordOxygen reduction reactionen_US
dc.subject.keywordHeteroatom-doped grapheneen_US
dc.subject.keywordMetal-free grapheneen_US
dc.titleManganese deception on graphene and implications in catalysisen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
nihms948821.pdf
Size:
1.01 MB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
Chemistry Publications
Materials Science and NanoEngineering Publications