Construction of Layered BN-Doped Graphene Sheets from an Acetylenic Compound Containing BN by a Semisynthetic Strategy.

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ID: 31453
2019
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Abstract
The structural modification of graphene at the atomic level is crucial for electrochemical applications. Doping heteroatoms to modify the structure of graphene has widely been adopted. However, the construction and controllable doping of heteroatom-doped graphene remains a challenge. Herein, a novel semisynthetic method is developed to synthesize a borazine (BN)-containing acetylenic compound as a precursor, and a series of BN-doped few-layered graphene nanosheets are prepared after annealing at different temperatures. To form graphene sheets, the in situ-forming MgBrCl salt is used as an intercalation agent to enlarge the mutual distance between molecules, which can inhibit the unwanted cross-linking reaction. Nanosheets with different thicknesses of 2.5, 3.5, and 4.1 nm can be obtained at annealing temperatures of 1500, 1200, and 1000 °C, respectively. The results demonstrate that the B and N atoms are co-doped in the graphene by the structure of BN, and the doping site can be changed with different annealing temperatures. The optical gap of graphene can be successfully opened by doping with BN, and the resultant material can be potentially utilized as a catalyst and semiconductor material. Furthermore, this new semisynthetic strategy will offer the opportunity to fabricate more carbon materials via controllable heteroatom doping.
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chen2019constructionacs Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Chen, Chen;Guo, Kangkang;Zhu, Yaping;Wang, Fan;Zhang, Weian;Qi, Huimin;
Journal ACS applied materials & interfaces
Year 2019
DOI
10.1021/acsami.9b10582
URL
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