Investigating the growth mechanism and optical properties of carbon-coated titanium dioxide nanoparticles

Dalaver H. Anjum, Nasir K. Memon, Suk Ho Chung

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

TiO2 nanoparticles (NPs) were prepared using flame synthesis and then characterized using transmission electron microscopy. We found that the flame method yields both crystalline TiO2 and amorphous TiO 2 NPs. TEM analysis revealed that only the crystalline TiO 2 NPs were coated with carbon. Based on this observation, we proposed a growth model for the diffusion and precipitation of carbon atoms in TiO 2 NPs. The optical properties of TiO2 NPs were investigated by performing valence electron energy loss spectrometry analysis. We observed that carbon-coated TiO2 NPs have higher absorption in the visible range due to their lower band-gap energy.

Original languageEnglish
Pages (from-to)134-138
Number of pages5
JournalMaterials Letters
Volume108
DOIs
Publication statusPublished - 2013
Externally publishedYes

Fingerprint

titanium oxides
Titanium dioxide
Carbon
Optical properties
Nanoparticles
optical properties
nanoparticles
carbon
flames
Flame synthesis
Crystalline materials
Transmission electron microscopy
transmission electron microscopy
Spectrometry
titanium dioxide
Energy dissipation
Energy gap
energy dissipation
electron energy
valence

Keywords

  • Carbon-coating
  • Electron microscopy
  • Flame synthesis
  • Nanoparticles
  • Optical materials and properties
  • TiO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Investigating the growth mechanism and optical properties of carbon-coated titanium dioxide nanoparticles. / Anjum, Dalaver H.; Memon, Nasir K.; Chung, Suk Ho.

In: Materials Letters, Vol. 108, 2013, p. 134-138.

Research output: Contribution to journalArticle

Anjum, Dalaver H. ; Memon, Nasir K. ; Chung, Suk Ho. / Investigating the growth mechanism and optical properties of carbon-coated titanium dioxide nanoparticles. In: Materials Letters. 2013 ; Vol. 108. pp. 134-138.
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