Publication detail

Formation of Tungsten Oxide Nanowires by Electron-Beam-Enhanced Oxidation of WS2 Nanotubes and Platelets

KOLÍBAL, M. BUKVIŠOVÁ, K. KACHTÍK, L. ZAK, A. NOVÁK, L. ŠIKOLA, T.

Original Title

Formation of Tungsten Oxide Nanowires by Electron-Beam-Enhanced Oxidation of WS2 Nanotubes and Platelets

Type

journal article in Web of Science

Language

English

Original Abstract

Oxidation of van der Waals-bonded layered semiconductors plays a key role in deterioration of their superior optical and electronic properties. The oxidation mechanism of these materials is, however, different from nonlayered semiconductors in many aspects. Here, we show a rather unusual oxidation of tungsten disulfide (WS2) nanotubes and platelets in a high vacuum chamber at a presence of water vapor and at elevated temperatures. The process results in the formation of small tungsten oxide nanowires on the surface of WS2. Utilizing realtime scanning electron microscopy, we are able to unravel the oxidation mechanism, which proceeds via reduction of initially formed WO3 phase into W18O49 nanowires. Moreover, we show that the oxidation reaction can be localized and enhanced by an electron-beam irradiation, which allows for on-demand growth of tungsten oxide nanowires.

Keywords

THERMAL-OXIDATION; GRAIN-BOUNDARIES; GROWTH; MOS2; NANOPARTICLES; SULFIDATION; MORPHOLOGY; REDUCTION; EVOLUTION; EFFICIENT

Authors

KOLÍBAL, M.; BUKVIŠOVÁ, K.; KACHTÍK, L.; ZAK, A.; NOVÁK, L.; ŠIKOLA, T.

Released

11. 4. 2019

ISBN

1932-7447

Periodical

Journal of Physical Chemistry C (print)

Year of study

123

Number

14

State

United States of America

Pages from

9552

Pages to

9559

Pages count

8

URL

https://pubs.acs.org/doi/abs/10.1021/acs.jpcc.9b00592

BibTex

@article{BUT157121,
  author="Miroslav {Kolíbal} and Kristýna {Bukvišová} and Lukáš {Kachtík} and Alla {Zak} and Libor {Novák} and Tomáš {Šikola}",
  title="Formation of Tungsten Oxide Nanowires by Electron-Beam-Enhanced Oxidation of WS2 Nanotubes and Platelets",
  journal="Journal of Physical Chemistry C (print)",
  year="2019",
  volume="123",
  number="14",
  pages="9552--9559",
  doi="10.1021/acs.jpcc.9b00592",
  issn="1932-7447",
  url="https://pubs.acs.org/doi/abs/10.1021/acs.jpcc.9b00592"
}