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dc.contributor.authorCheng, Y.
dc.contributor.authorZhao, S.
dc.contributor.authorLi, H.
dc.contributor.authorHe, S.
dc.contributor.authorVeder, Jean-Pierre
dc.contributor.authorJohannessen, B.
dc.contributor.authorXiao, J.
dc.contributor.authorLu, S.
dc.contributor.authorPan, J.
dc.contributor.authorChisholm, M.
dc.contributor.authorYang, S.
dc.contributor.authorLiu, C.
dc.contributor.authorChen, J.
dc.contributor.authorJiang, San Ping
dc.identifier.citationCheng, Y. and Zhao, S. and Li, H. and He, S. and Veder, J. and Johannessen, B. and Xiao, J. et al. 2019. Unsaturated edge-anchored Ni single atoms on porous microwave exfoliated graphene oxide for electrochemical CO2. Applied Catalysis B: Environmental. 243: pp. 294-303.

© 2018 Elsevier B.V. Supported single atom catalysts (SACs), emerging as a new class of catalytic materials, have been attracting increasing interests. Here we developed a Ni SAC on microwave exfoliated graphene oxide (Ni-N-MEGO) to achieve single atom loading of ~6.9 wt%, significantly higher than previously reported SACs. The atomically dispersed Ni atoms, stabilized by coordination with nitrogen, were found to be predominantly anchored along the edges of nanopores (< 6 nm) using a combination of X-ray absorption spectroscopy (XAS) and aberration-corrected scanning transmission electron microscopy (AC-STEM). The Ni-N-MEGO exhibits an onset overpotential of 0.18 V, and a current density of 53.6 mA mg-1 at overpotential of 0.59 V for CO2 reduction reaction (CO2RR), representing one of the best non-precious metal SACs reported so far in the literature. Density functional theory (DFT) calculations suggest that the electrochemical CO2-to-CO conversion occurs more readily on the edge-anchored unsaturated nitrogen coordinated Ni single atoms that lead to enhanced activity toward CO2RR.

dc.publisherElsevier BV
dc.titleUnsaturated edge-anchored Ni single atoms on porous microwave exfoliated graphene oxide for electrochemical CO2
dc.typeJournal Article
dcterms.source.titleApplied Catalysis B: Environmental
curtin.departmentJohn de Laeter Centre
curtin.accessStatusFulltext not available

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