Detail publikace

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

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

Jazyk

en

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.

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",
  annote="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.",
  chapter="157121",
  doi="10.1021/acs.jpcc.9b00592",
  howpublished="print",
  number="14",
  volume="123",
  year="2019",
  month="april",
  pages="9552--9559",
  type="journal article in Web of Science"
}