Monoelemental 2D materials called Xenes have a graphene-like structure, intra-layer covalent bond, and weak van der Waals forces between layers. Materials composed of different groups of elements have different structures and rich properties, making Xenes materials a potential candidate for the next generation of 2D materials.

1. Structure and Classification of 2D Monoelemental Materials (Xenes). 2. Group IIIA of 2D Xenes Materials (Borophene, Aluminene, Gallenene, Indiene). 3. Group IVA of 2D Xenes Materials (Silicene, Germanene, Stanene, Plumbene). 4. Group VA of 2D Xenes Materials (Phosphorene, Arsenene, Antimonene, Bismuthene). 5. Group VIA of 2D Xenes Materials (Selinene and Tellurene Nanosheets). 6. Heterostructures Based on 2D Xenes Materials. 7. Defective 2D Xenes Materials. 8. 2D Xenes Materials Under Different Field Action.

Zongyu Huang is Professor and Director for the Department of Physics, School of Physics and Optoelectronics, Xiangtan University, China. She earned her B.S. degree in Physics from Hubei University, China, in 2004, her M.S. degree in Condensed Matter Physics from Wuhan University, China, in 2006, and her Ph.D. in Physics from Xiangtan University, China, in 2014. Her research interest is in physical properties and applications of two-dimensional (2D) materials via first principles calculation methods, and advanced synthesis and characterization methods. Her work is documented in over 50 peer-reviewed publications in international journals, such as Advanced Energy Materials and Nano Today.

Xiang Qi is Professor and Vice-Director of the Hunan Key Laboratory of Micro-Nano Energy Materials and Devices at Xiangtan University, China. He earned his B.S. and Ph.D. degrees from Wuhan University, China, in 2004 and 2009, respectively. Previously he was Visiting Professor at Monash University Australia (2016-2017), and Visiting Student at Nanyang Technological University, Singapore (2007). His research interests are focused on the field of 2D material and its applications, with particular emphasis on monoelement 2D materials and their derived structures in optoelectronic, clean renewable energy, and environmental science. Currently he has published over 60 papers with total citations over 6370 and an H-index of 42 based on the data from ISI Web of Science. Twenty of his publications have been cited over 100 times.

Jianxin Zhong is Professor in Condensed Matter and Materials Physics, Dean of the School of Physics and Optoelectronics, and Director of the Hunan Key Laboratory of Micro-Nano Energy Materials and Devices at Xiangtan University, China. He earned his B.S. degree in Physics from Xiangtan University, China, in 1985, his M.S. degree in Theoretical Physics from Xiangtan University and Hunan University, China, in 1989, and his Ph.D. degree in Solid State Physics from the University of Cergy-Pontoise, France, in 1995. Previously, he was Visiting Professor at the Max Planck Institute for Dynamics and Self-organization and the Chemnitz University of Technology, Germany (1997-1998), Research Scientist (1998-2007) and Distinguished Visiting Scientist (2008-2014) at Oak Ridge National Laboratory and the University of Tennessee, Knoxville. His research interest is in synthesis and properties of functional nanomaterials, focusing on 2D materials, topological insulators, and semiconductor nanomaterials for energy applications. Research tools include first principles methods, molecular dynamic simulations, and advanced synthesis and characterization methods. His work is documented in over 300 peer-reviewed publications in international journals. He has received numerous national and international awards of excellence over the years, including a 2007 MICRO/NANO 25 Award from R&D 100 Magazine, Progress in Science and Technology Award by the Ministry of Education of China, Hunan Provincial Natural Science Award, National Model Teacher Award, and National Distinguished Teacher Award.