Recent Progress on Germanene and Functionalized Germanene: Preparation, Characterizations, Applications, and Challenges
Recent Progress on Germanene and Functionalized Germanene: Preparation, Characterizations, Applications, and Challenges
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锗烯和功能化锗烯的最新进展：制备、表征、应用和挑战
DOI：
10.1002/smll.201805147
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发表时间：
2019-08-01
期刊：
影响因子：
13.3
通讯作者：
Dou, Shi Xue
中科院分区：
文献类型：
--
作者：
Liu, Nana;Bo, Guyue;Dou, Shi Xue
具有石墨烯结构的单原子厚度二维锗基材料锗烯和功能化锗烯由于其大的能带隙和易于定制的电子性质而引起了人们的广泛关注。与石墨烯中的碳原子不同，锗原子在锗烯中倾向于采用混合的sp（2）/sp（3）杂化，这使得它在表面上具有化学活性，并允许它的电子状态容易通过化学功能化进行调节。锗烯和功能化锗烯在储能和催化方面的应用取得了令人瞩目的成就。本文综述了锗烯在不同金属衬底上的外延生长及其独特的电学性质。然后，氢官能化锗烯（锗烷或GeH）和其他配体封端形式的锗烯的制备策略和基本性质。最后，分析了它们在储能和催化方面的应用进展，包括实验结果和理论预测。
A new family of single-atom-thick 2D germanium-based materials with graphene-like atomic arrangement, germanene and functionalized germanene, has attracted intensive attention due to their large bandgap and easily tailored electronic properties. Unlike carbon atoms in graphene, germanium atoms tend to adopt mixed sp(2)/sp(3) hybridization in germanene, which makes it chemically active on the surface and allows its electronic states to be easily tuned by chemical functionalization. Impressive achievements in terms of the applications in energy storage and catalysis have been reported by using germanene and functionalized germanene. Herein, the fabrication of epitaxial germanene on different metallic substrates and its unique electronic properties are summarized. Then, the preparation strategies and the fundamental properties of hydrogen-functionalized germanene (germanane or GeH) and other ligand-terminated forms of germanene are presented. Finally, the progress of their applications in energy storage and catalysis, including both experimental results and theoretical predictions, is analyzed.