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Energetics, Charge Transfer, and Magnetism of Small Molecules Physisorbed on Phosphorene

Open access
Cai, Yongqing, Ke, Qingqing, Zhang, Gang, Zhang, Yong-Wei·2015·The Journal of Physical Chemistry C

Abstract

First-principles calculations are performed to investigate the interaction of physisorbed small molecules, including CO, H 2, H 2 O, NH 3, NO, NO 2, and O 2, with phosphorene, and their energetics, charge transfer, and magnetic moment are evaluated on the basis of dispersion-corrected density functional theory. Our calculations reveal that CO, H 2, H 2 O, and NH 3 molecules act as a weak donor, whereas O 2 and NO 2 act as a strong acceptor. While the NO molecule donates electrons to graphene, it receives electrons from phosphorene. Among all the investigated molecules, NO 2 has the strongest interaction through hybridizing its frontier orbitals with the 3p orbital of phosphorene. The nontrivial and distinct charge transfer occurring between phosphorene and these physisorbed molecules not only renders phosphorene promising for application as a gas sensor but also provides an effective route for modulating the polarity and density of carriers in phosphorene. In addition, the intermediate binding energy of hydrogen molecules on phosphorene implies stable hydrogen storage at ambient conditions and subsequent facile release.

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Metadata

Authors
Cai, Y., Ke, Q., Zhang, G., & Zhang, Y.-W.
Venue
The Journal of Physical Chemistry C
Published
2015-01-30
Volume
119
Issue
6
Pages
3102-3110
ISSN
  • 1932-7447 (ISSN-L)
  • 1932-7455
OpenAlex
W2089667279
Cited by
408
References
45
FWCI
19.32
Type
journal article
Language
en
Open access
green

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