Discriminating sensing of explosive molecules using graphene-boron nitride-graphene heteronanosheets.

Discriminating sensing of explosive molecules using graphene-boron nitride-graphene heteronanosheets.
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DOI:
10.1039/d2ra06125b
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发表时间:
2022-12-06
期刊:
影响因子:
3.9
通讯作者:
--
中科院分区:
化学3区
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--
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自石墨烯-氮化硼异质结构合成以来,其有趣的电子性质引起了人们对实际纳米器件应用的极大关注。在这项工作中,我们将密度泛函理论(DFT)与格林函数方法结合起来,研究了石墨烯-氮化硼-石墨烯异烷片(h-NSHs)在区分单分子传感方面的潜力。我们的研究结果表明,石墨烯-氮化硼-石墨烯(h-NSHs)可以用于区分感应2,4-二硝基甲苯(DNT)、八氢-1,3,5,7-四硝基-1,3,5,7-四氮辛(HMX)、四硝基季戊四醇(PENT)和2,4,6-三硝基甲苯(TNT)分子。我们证明,随着BN区长度的增加,异烷片对这些爆炸性物质的敏感性增加。石墨烯-氮化硼-石墨烯(h-NSHs)异质结构可用于识别2,4-二硝基甲苯(DNT)、八氢-1,3,5,7-四硝基-1,3,5,7-四氮辛(HMX)、四硝基季戊四醇(PENT)和2,4,6-三硝基甲苯(TNT)分子。
Since the synthesis of graphene–boron nitride heterostructures, their interesting electronic properties have attracted huge attention for real-world nanodevice applications. In this work, we combined density functional theory (DFT) with a Green's function approach to examine the potential of graphene–boron nitride–graphene heteronanosheets (h-NSHs) for discriminating single molecule sensing. Our result demonstrates that the graphene–boron nitride–graphene (h-NSHs) can be used for discriminate sensing of the 2,4-dinitrotoluene (DNT), octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX), pentaerythritol tetranitrate (PENT), and 2,4,6-trinitrotoluene (TNT) molecules. We demonstrate that as the length of the BN region increases, the sensitivity of the heteronanosheets to the presence of these explosive substances increases. Graphene–boron nitride–graphene (h-NSHs) heterostructures can be used for discriminate sensing of 2,4-dinitrotoluene (DNT), octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX), pentaerythritol tetranitrate (PENT), and 2,4,6-trinitrotoluene (TNT) molecules.
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