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. 2021 Jul 29;9:728066. doi: 10.3389/fchem.2021.728066

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Copyright © 2021 Zhang, Zhang, Zhang, Ji, Zhang, Wang, Guo, Ni, Cai, Mu, Long and Wang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Classification of two-dimensional materials. (A) Nitrides. (B) Xenes. (C) Orangic materials. (D) Transition metal dichalcogenides (reproduced from (Jacoby, 2017) with permission from Royal Society of Chemistry). (E) MXenes (reproduced from (Huang et al., 2018) with permission from Royal Society of Chemistry).