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Adsorption performance of M-doped (M = Ti and Cr) gallium nitride nanosheets towards SO2 and NO2: a DFT-D calculation

机译:M掺杂(M = Ti和Cr)氮化镓纳米片朝向SO2和NO2的吸附性能:DFT-D计算

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The structure, adsorption characteristics, electronic properties, and charge transfer of SO _(2) and NO _(2) molecules on metal-doped gallium nitride nanosheets ( M-GaNNS s; M = Ti and Cr) were scrutinized at the Grimme-corrected PBE/double numerical plus polarization (DNP) level of theory. Two types, M _(Ga) -GaNNS s and M _(N) -GaNNS s, of doped nanostructures were found. The M _(Ga) sites are more stable than the M _(N) sites. The results showed that adsorption of SO _(2) and NO _(2) molecules on Ti _(Ga,N) -GaNNS s is energetically more favorable than the corresponding Cr _(Ga,N) -GaNNS s. The stability order of complexes is energetically predicted to be as NO _(2) –Ti _(Ga) -GaNNS > NO _(2) –Ti _(N) -GaNNS > SO _(2) –Ti _(Ga) -GaNNS > NO _(2) –Cr _(N) -GaNNS > SO _(2) –Ti _(N) -GaNNS > NO _(2) –Cr _(Ga) -GaNNS > SO _(2) –Cr _(N) -GaNNS > SO _(2) –Cr _(Ga) -GaNNS . The electron population analysis shows that charge is transferred from M _(Ga,N) -GaNNS s to the adsorbed gases. The Ti _(Ga) -GaNNS is more sensitive than the other doped nanostructures to NO _(2) and SO _(2) gases. It is estimated that the sensitivity of Ti _(Ga) -GaNNS to NO _(2) gas is more than to SO _(2) gas.
机译:在GRIMME审查所以在金属掺杂氮化镓纳米片(M-GANNS S; M = Ti和Cr)上仔细仔细仔细审查在金属掺杂氮化镓纳米片(M-Ganns S; M = Ti和Cr)上的_(2)和NO _(2)分子的电荷转移校正PBE /双数值加偏振(DNP)理论水平。发现了两种类型的M _(GA) - 掺杂纳米结构的M _(GA)-GANNS S和M _(n)。 M _(GA)站点比M _(n)站点更稳定。结果表明,SO_(2)和NO _(2)分子的吸附在TI _(GA,N) - 对于S比相应的CR _(GA,N)有利更有利。复合物的稳定性顺序是大量的预测,也可以是否_(2)-ti_(ga) - 否_(2)-Ti _(n)-ganns> so_(2)-ti_(ga) -ganns>否_(2)-cr _(n)-ganns> so_(2)-ti _(n)-ganns> no _(2)-cr _(ga)-ganns> so_(2) -cr _(n)-ganns> so _(2)-cr _(ga)-ganns。电子群体分析表明,电荷从M _(Ga,n)转移到吸附的气体。 Ti _(Ga)-ganns比其他掺杂的纳米结构更敏感到No _(2)等_(2)气体。估计Ti _(Ga)对No _(2)气体的敏感性大于如此_(2)气体。

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