• 文献标题:   Research progress on penta-graphene and its related materials: Properties and applications
  • 文献类型:   Review
  • 作  者:   NAZIR MA, HASSAN A, SHEN YH, WANG Q
  • 作者关键词:   pentagraphene, negative poisson s ratio, nanoauxeticity, piezoelectricity, heterojunction
  • 出版物名称:   NANO TODAY
  • ISSN:   1748-0132 EI 1878-044X
  • 通讯作者地址:  
  • 被引频次:   19
  • DOI:   10.1016/j.nantod.2022.101501 EA MAY 2022
  • 出版年:   2022

▎ 摘  要

The most direct and efficient strategy in designing and synthesizing new materials is to change the structural building units, which could lead to a new paradigm shift. Penta-graphene (PG) is such an example where the structural unit is pentagon rather than hexagon as in graphene. Since we proposed the unique structure of penta-graphene, a two-dimensional (2D) carbon allotrope entirely composed of carbon pentacyclic rings [Proc. Natl. Acad. Sci. U. S. A. 112, 2372 (2015)], tremendous efforts have been made to explore the novel properties of PG and its derivatives such as penta-nanotubes, penta-nanoribbons, multilayer PG, functionalized PG, and polycrystalline PG. These materials exhibit novel physical and chemical properties, including nano-auxeticity, intrinsic piezoelectricity, ferroelectricity, spontaneous polarization, and catalysis, showing great potential for the applications in battery anode, spin-splitting/filtering, gas separation, biodetection, and heterojunctions. More importantly, PG has inspired a lot of efforts in the design and synthesis of other pentagon-based 2D materials with exceptional properties and promising applications (http://www. pubsd.com/). In this paper, we provide a comprehensive review on the progress made in this new field by focusing on the structure-property relationship. We discuss the main achievements that have provided an in-depth understanding of the novel properties and applications of pentagon-based materials, ranging from PG to PG derived materials, and PG's cousins (penta-silicene and penta-germanene). This review can not only help to better understand the property evolution of the elemental penta-sheets in the same group, but also provides a bird's eye view on how the structural unit changes the functionalities of materials. (c) 2022 Elsevier Ltd. All rights reserved.