二维硼碳基纳米结构上的吸附及其性质

综述金属原子与非金属原子和分子在石墨烯、BC₃平面等二维硼碳基纳米结构上的吸附所表现出的各种物理性质及可能的应用.纯净的石墨烯为零带隙的半金属、无磁且自旋轨道耦合效应非常弱,BC₃平面为间接带隙半导体,但金属原子与非金属原子和分子的吸附可能使石墨烯体系在Dirac点处打开带隙、具有强自旋轨道耦合效应,可能使石墨烯体系与二维BC₃体系具有磁有序、超导电性及应用在氢存储上.另外石墨烯表现出非常好的分子探测性能.

Adsorption on Two-dimensional Boron and Carbon Based Nanostructures and Properties

We review physical properties and potential applications of two-dimensional boron and carbon based nanostructures such as graphene and BC₃ sheet adsorbed with metal atoms, non-metal atoms or molecules. Pristine graphene is semi-metallic with zero band gap, which is nonmagnetic and has weak spin orbit coupling (SOC). BC₃ sheet is a semiconductor with an indirect band gap. As graphene and BC₃ sheet are adsorbed with metal atoms, non-metal atoms or molecules, graphene systems may have a band gap at Dirac point, strong SOC, magnetic order and superconductivity. Applications in hydrogen storage may be realized in graphene and BC₃ systems. In addition, it has been demonstrated that graphene can be used as gas sensors with significantly high precision.