Journal
CHEMPHYSCHEM
Volume 15, Issue 12, Pages 2542-2549Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201402147
Keywords
ab initio calculations; boron; carbon; doping; graphene
Funding
- West Bengal State Government
- Science and Engineering Research Board (SERB) [SB/FTP/PS028/2013]
- University Grants Commission, the Government of India
- TEQIP programme
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Introduction of defects and nitrogen doping are two of the most pursued methods to tailor the properties of graphene for better suitability to applications such as catalysis and energy conversion. Doping nitrogen atoms at defect sites of graphene and codoping them along with boron atoms can further increase the efficiency of such systems due to better stability of nitrogen at defect sites and stabilization provided by B-N bonding. Systematic exploration of the possible doping/codoping configurations reflecting defect regions of graphene presents a prevalent doping site for nitrogen-rich BN clusters and they are also highly suitable for modulating (0.2-0.9 eV) the band gap of defect graphene. Such codoped systems perform significantly better than the platinum surface, undoped defect graphene, and the single nitrogen or boron atom doped defect graphene system for dioxygen adsorption. Significant stretching of the O-O bond indicates a lowering of the bond breakage barrier, which is advantageous for applications in the oxygen reduction reaction.
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