Detail publikačního výsledku

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.

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2020

Vydáno

11.04.2019

ISSN

1932-7447

Periodikum

Journal of Physical Chemistry C

Svazek

123

Číslo

14

Stát

Spojené státy americké

Strany od

9552

Strany do

9559

Strany počet

8

URL

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

Plný text v Digitální knihovně

http://hdl.handle.net/

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",
  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"
}

Dokumenty

Formation of tungsten