Synthesis and study of the SnO2 nanowires growth

Ming Ru Yang, Sheng Yuan Chu, Ren Chuan Chang

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

In this study, tin dioxide (SnO2) nanowires were synthesized on a silicon substrate (1 1 1) using a direct gas reaction route on a large scale at 800 °C. These SnO2 nanowires were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman-scattering spectroscopy. XRD, SEM and TEM indicated that the products were tetragonal SnO2 nanowires with lattice parameters of a = 4.73 Å and c = 3.17 Å. Three vibration modes were observed at 478, 634, and 776 cm-1 in the Raman spectra of the samples. Complex impedance analysis of SnO2 nanowires well fitted with a simple RC electrical model. According to the current-voltage (I-V) measurements, it was found that the SnO2 nanowires were a good sensing for detecting carbon monoxide. The response to 500 ppm CO of the SnO2 nanowires reached 60%.

Original languageEnglish
Pages (from-to)269-273
Number of pages5
JournalSensors and Actuators, B: Chemical
Volume122
Issue number1
DOIs
Publication statusPublished - 2007 Mar 8

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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