Structural and optical properties of hydrothermally synthesized mesoporous Si/TiO2 nanowire composites

M. N. Asiah, M. H. Mamat, Zuraida Khusaimi, S. Abdullah, M. Rusop, Ahsanulhaq Qurashi

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

One dimensional (1D) Si/TiO2 nanowire composite has been successfully synthesized using novel hydrothermal method. The reaction between TiO2 nanopowder and silicon nanopowder in a concentrated NaOH aqueous solution were carried out at 150 °C for 6 h. The diameter of Si/TiO2 composite was larger compared to TiO2 nanowires and increased as the amount of Si increased. The XRD results showed insertion of Si into TiO2 matrix produced Si/TiO2 composite dominant of well crystallized rutile phase rather than anatase phase. The Raman spectroscopy and the XRD result revealed that the Si/TiO2 composite nanowires have good crystalline structure. The Si/TiO2 nanowires showed the absorption edge shifted to a longer wavelength and exhibit lower band gap compared to pure TiO2 nanowires.

Original languageBritish English
Pages (from-to)31-35
Number of pages5
JournalMicroelectronic Engineering
Volume136
DOIs
StatePublished - 25 Mar 2015

Keywords

  • Hydrothermal method
  • Si/TiO nanowires
  • TiO

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