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Facile Synthesis of Large and Thin TiS2 Sheets via a Gas/Molten Salt Interface Reaction

Highly crystalline hexagonal titanium disulfide (TiS) sheets were synthesized at the gas/liquid interface between TiCl vapor and the dissolved NaS in equimolar – melts at temperatures between 700°C and 850°C. TiS sheets with sizes of about 10–20 μm and thicknesses of about 50–200 nm have been collec... Full description

Journal Title: Journal of the American Ceramic Society May 2015, Vol.98(5), pp.1423-1428
Main Author: Tan, Mingsheng
Other Authors: Wang, Zhiyong , Peng, Junjun , Jin, Xianbo
Format: Electronic Article Electronic Article
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ID: ISSN: 0002-7820 ; E-ISSN: 1551-2916 ; DOI: 10.1111/jace.13499
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recordid: wj10.1111/jace.13499
title: Facile Synthesis of Large and Thin TiS2 Sheets via a Gas/Molten Salt Interface Reaction
format: Article
creator:
  • Tan, Mingsheng
  • Wang, Zhiyong
  • Peng, Junjun
  • Jin, Xianbo
subjects:
  • Thin-Sheet
  • Hexagonal-Crystal-Structure
  • Fused-Salts
  • Titanium
  • Disulfides
  • Interface-Reaction
  • Mass-Transfer
  • Ultrasonic
  • Interphase
  • Membranes
  • Feinblech
  • Hexagonales Kristallsystem
  • Salzschmelze
  • Titan
  • Disulfide
  • Grenzflächenreaktion
  • Stoffübergang
  • Ultraschall
  • Zwischenphase
  • Membran
  • Engineering
  • Visual Arts
ispartof: Journal of the American Ceramic Society, May 2015, Vol.98(5), pp.1423-1428
description: Highly crystalline hexagonal titanium disulfide (TiS) sheets were synthesized at the gas/liquid interface between TiCl vapor and the dissolved NaS in equimolar – melts at temperatures between 700°C and 850°C. TiS sheets with sizes of about 10–20 μm and thicknesses of about 50–200 nm have been collected at 700°C–750°C, and much bigger (50–100 μm in sizes) and thicker (1–5 μm in thickness) TiS sheets were obtained at 850°C. The mass transfer preferential growth of an interphase layer and the thermodynamically preferential enlargement of the (001) plane of the hexagonal TiS crystal were thought to have led the formation of large and thin TiS sheets in this proposed gas/liquid interface process. Due to the density difference, the ripe TiS sheets sank into the melt allowing the continuing preparation of TiS sheets. These TiS sheets could spontaneously assemble to TiS membranes or be ultrasonically exfoliated to few‐layer TiS sheets with thicknesses less than 5 nm. The presented approach should be potentially extendable to the synthesis of large and thin sheets of other layered metal dichalcogenides in large scale.
language:
source:
identifier: ISSN: 0002-7820 ; E-ISSN: 1551-2916 ; DOI: 10.1111/jace.13499
fulltext: fulltext
issn:
  • 0002-7820
  • 00027820
  • 1551-2916
  • 15512916
url: Link


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titleFacile Synthesis of Large and Thin TiS2 Sheets via a Gas/Molten Salt Interface Reaction
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descriptionHighly crystalline hexagonal titanium disulfide (TiS) sheets were synthesized at the gas/liquid interface between TiCl vapor and the dissolved NaS in equimolar – melts at temperatures between 700°C and 850°C. TiS sheets with sizes of about 10–20 μm and thicknesses of about 50–200 nm have been collected at 700°C–750°C, and much bigger (50–100 μm in sizes) and thicker (1–5 μm in thickness) TiS sheets were obtained at 850°C. The mass transfer preferential growth of an interphase layer and the thermodynamically preferential enlargement of the (001) plane of the hexagonal TiS crystal were thought to have led the formation of large and thin TiS sheets in this proposed gas/liquid interface process. Due to the density difference, the ripe TiS sheets sank into the melt allowing the continuing preparation of TiS sheets. These TiS sheets could spontaneously assemble to TiS membranes or be ultrasonically exfoliated to few‐layer TiS sheets with thicknesses less than 5 nm. The presented approach should be potentially extendable to the synthesis of large and thin sheets of other layered metal dichalcogenides in large scale.
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subjectThin-Sheet ; Hexagonal-Crystal-Structure ; Fused-Salts ; Titanium ; Disulfides ; Interface-Reaction ; Mass-Transfer ; Ultrasonic ; Interphase ; Membranes ; Feinblech ; Hexagonales Kristallsystem ; Salzschmelze ; Titan ; Disulfide ; Grenzflächenreaktion ; Stoffübergang ; Ultraschall ; Zwischenphase ; Membran ; Engineering ; Visual Arts;
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titleFacile Synthesis of Large and Thin TiS2 Sheets via a Gas/Molten Salt Interface Reaction
descriptionHighly crystalline hexagonal titanium disulfide (TiS) sheets were synthesized at the gas/liquid interface between TiCl vapor and the dissolved NaS in equimolar – melts at temperatures between 700°C and 850°C. TiS sheets with sizes of about 10–20 μm and thicknesses of about 50–200 nm have been collected at 700°C–750°C, and much bigger (50–100 μm in sizes) and thicker (1–5 μm in thickness) TiS sheets were obtained at 850°C. The mass transfer preferential growth of an interphase layer and the thermodynamically preferential enlargement of the (001) plane of the hexagonal TiS crystal were thought to have led the formation of large and thin TiS sheets in this proposed gas/liquid interface process. Due to the density difference, the ripe TiS sheets sank into the melt allowing the continuing preparation of TiS sheets. These TiS sheets could spontaneously assemble to TiS membranes or be ultrasonically exfoliated to few‐layer TiS sheets with thicknesses less than 5 nm. The presented approach should be potentially extendable to the synthesis of large and thin sheets of other layered metal dichalcogenides in large scale.
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abstractHighly crystalline hexagonal titanium disulfide (TiS) sheets were synthesized at the gas/liquid interface between TiCl vapor and the dissolved NaS in equimolar – melts at temperatures between 700°C and 850°C. TiS sheets with sizes of about 10–20 μm and thicknesses of about 50–200 nm have been collected at 700°C–750°C, and much bigger (50–100 μm in sizes) and thicker (1–5 μm in thickness) TiS sheets were obtained at 850°C. The mass transfer preferential growth of an interphase layer and the thermodynamically preferential enlargement of the (001) plane of the hexagonal TiS crystal were thought to have led the formation of large and thin TiS sheets in this proposed gas/liquid interface process. Due to the density difference, the ripe TiS sheets sank into the melt allowing the continuing preparation of TiS sheets. These TiS sheets could spontaneously assemble to TiS membranes or be ultrasonically exfoliated to few‐layer TiS sheets with thicknesses less than 5 nm. The presented approach should be potentially extendable to the synthesis of large and thin sheets of other layered metal dichalcogenides in large scale.
doi10.1111/jace.13499
pages1423-1428
date2015-05