过渡金属硫属化合物层间异质结构的可控制备和能源应用
发布时间：2018-07-18 15:01
【摘要】：随着石墨烯及其优异性质被发现以来,二维层状材料成为了材料科学领域研究的热点.二维层状材料每个片层内的原子通过化学键连接,片层间以弱范德华力相互堆垛.这种几何结构使得二维层状材料在晶格不匹配和生长方法不兼容的情况下,彼此之间仍然能够相互混合和匹配,从而衍生出很多范德华层间异质结构.这种异质结构利用了不同堆垛材料迥异的物理和化学性质,在电子、光电子器件、可再生能源储存和转化等领域得到了广泛的应用.需要指出的是,大面积、大畴区、可控制备本征层间异质结构是实现其实际应用的首要条件.本文总结了基于过渡金属硫属化合物(MX_2)和石墨烯(graphene)层间异质结构的最新研究成果,重点描述了MX_2/graphene和MX_2/MX_2层间异质结构的化学气相沉积(CVD)可控制备、新奇物理性质探索以及这两类异质结构在能源领域(电/光催化析氢反应)中的应用,并讨论了所存在的问题和未来发展方向.
[Abstract]:With the discovery of graphene and its excellent properties, two-dimensional layered materials have become a hot topic in the field of material science. The atoms in each layer of two-dimensional layered material are connected by chemical bonds and stacked in a weak van der Waals force. This geometric structure enables two-dimensional layered materials to mix and match each other even when the lattice mismatch and growth methods are incompatible, thus deriving many van der Waals interlayer heterostructures. This kind of heterostructure takes advantage of the different physical and chemical properties of different stacking materials and has been widely used in the fields of electronics optoelectronic devices renewable energy storage and conversion and so on. It should be pointed out that large area, large domain region and controllable preparation of intrinsic interlayer heterostructure are the most important conditions for its practical application. In this paper, the latest research results based on transition metal sulfur compounds (MX2) and graphene (graphene) interlayer heterostructures are summarized, and the chemical vapor deposition (CVD) controllable devices of MX-2 / MX-2 heterostructures are described emphatically. The novel physical properties and the applications of these two kinds of heterostructures in the field of energy (electro-photocatalytic hydrogen evolution) are discussed. The existing problems and the future development are also discussed.
【作者单位】： 北京大学工学院材料科学与工程系;北京大学化学与分子工程学院纳米化学研究中心;
【基金】：科技部重点研发计划(2016YFA0200103) 国家自然科学基金(51472008,51290272,21201012,51121091,51072004,51201069) 北京市科学技术委员会(Z151100003315013) 清华大学低维量子物理国家重点实验室开放基金(KF201601)资助
【分类号】：TB303
[Abstract]:With the discovery of graphene and its excellent properties, two-dimensional layered materials have become a hot topic in the field of material science. The atoms in each layer of two-dimensional layered material are connected by chemical bonds and stacked in a weak van der Waals force. This geometric structure enables two-dimensional layered materials to mix and match each other even when the lattice mismatch and growth methods are incompatible, thus deriving many van der Waals interlayer heterostructures. This kind of heterostructure takes advantage of the different physical and chemical properties of different stacking materials and has been widely used in the fields of electronics optoelectronic devices renewable energy storage and conversion and so on. It should be pointed out that large area, large domain region and controllable preparation of intrinsic interlayer heterostructure are the most important conditions for its practical application. In this paper, the latest research results based on transition metal sulfur compounds (MX2) and graphene (graphene) interlayer heterostructures are summarized, and the chemical vapor deposition (CVD) controllable devices of MX-2 / MX-2 heterostructures are described emphatically. The novel physical properties and the applications of these two kinds of heterostructures in the field of energy (electro-photocatalytic hydrogen evolution) are discussed. The existing problems and the future development are also discussed.
【作者单位】： 北京大学工学院材料科学与工程系;北京大学化学与分子工程学院纳米化学研究中心;
【基金】：科技部重点研发计划(2016YFA0200103) 国家自然科学基金(51472008,51290272,21201012,51121091,51072004,51201069) 北京市科学技术委员会(Z151100003315013) 清华大学低维量子物理国家重点实验室开放基金(KF201601)资助
【分类号】：TB303
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