TY - JOUR

T1 - Comment on 'Two-dimensional carbon nitride C6N nanosheet with egg-comb-like structure and electronic properties of a semimetal [2021, Nanotechnology 32,215702]'

AU - Mortazavi, Bohayra

AU - Neek-Amal, Mehdi

N1 - Funding Information: BM appreciates the funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453). BM is greatly thankful to the VEGAS cluster at Bauhaus University of Weimar for providing the computational resources. BM is also thankful to the Dr Shojaei for sharing the atomic structure of the 6CN monolayer.

PY - 2022/7/2

Y1 - 2022/7/2

N2 - Recently, Bafekry et al (2021 Nanotechnology 32 215702) predicted a novel two-dimensional carbon nitride with an egg-comb-like structure and a C6N stoichiometry. Their density functional theory results reveal the thermal stability of this structure at 300 K. They also examined the thermoelectric properties of this monolayer up to 500 K. By adopting the same methodology employed in the original work by Bafekry et al (2021 Nanotechnology 32 215702), we show that this monolayer is thermally unstable and cannot be employed for practical applications. Aforementioned theoretical work also includes inaccuracies in the evaluation of thermoelectric properties of the C6N monolayer, as they did not consider the contribution of the lattice thermal conductivity.

AB - Recently, Bafekry et al (2021 Nanotechnology 32 215702) predicted a novel two-dimensional carbon nitride with an egg-comb-like structure and a C6N stoichiometry. Their density functional theory results reveal the thermal stability of this structure at 300 K. They also examined the thermoelectric properties of this monolayer up to 500 K. By adopting the same methodology employed in the original work by Bafekry et al (2021 Nanotechnology 32 215702), we show that this monolayer is thermally unstable and cannot be employed for practical applications. Aforementioned theoretical work also includes inaccuracies in the evaluation of thermoelectric properties of the C6N monolayer, as they did not consider the contribution of the lattice thermal conductivity.

KW - C6N

KW - nanosheet

KW - thermoelectric

UR - http://www.scopus.com/inward/record.url?scp=85128488312&partnerID=8YFLogxK

U2 - 10.1088/1361-6528/ac62b0

DO - 10.1088/1361-6528/ac62b0

M3 - Commentary in journal

C2 - 35354126

AN - SCOPUS:85128488312

VL - 33

JO - NANOTECHNOLOGY

JF - NANOTECHNOLOGY

SN - 0957-4484

IS - 27

M1 - 278001

ER -