Ultra-fast microwave synthesis of ZnO nanowires and their dynamic response toward hydrogen gas

Ahsanulhaq Qurashi, Nouar Tabet, M. Faiz, Toshinari Yamzaki

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

Ultra-fast and large-quantity (grams) synthesis of one-dimensional ZnO nanowires has been carried out by a novel microwave-assisted method. High purity Zinc (Zn) metal was used as source material and placed on microwave absorber. The evaporation/oxidation process occurs under exposure to microwave in less than 100 s. Field effect scanning electron microscopy analysis reveals the formation of high aspect-ratio and high density ZnO nanowires with diameter ranging from 70 to 80 nm. Comprehensive structural analysis showed that these ZnO nanowires are single crystal in nature with excellent crystal quality. The gas sensor made of these ZnO nanowires exhibited excellent sensitivity, fast response, and good reproducibility. Furthermore, the method can be extended for the synthesis of other oxide nanowires that will be the building block of future nanoscale devices.

Original languageEnglish
Pages (from-to)948-954
Number of pages7
JournalNanoscale Research Letters
Volume4
Issue number8
DOIs
Publication statusPublished - 27 Apr 2009
Externally publishedYes

Fingerprint

dynamic response
Nanowires
Dynamic response
Hydrogen
nanowires
Gases
Microwaves
microwaves
hydrogen
synthesis
gases
high aspect ratio
Chemical sensors
structural analysis
Structural analysis
Oxides
Zinc
Aspect ratio
absorbers
Evaporation

Keywords

  • FESEM
  • H gas sensor
  • Microwave synthesis
  • Nanowires
  • TEM
  • XPES
  • ZnO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Ultra-fast microwave synthesis of ZnO nanowires and their dynamic response toward hydrogen gas. / Qurashi, Ahsanulhaq; Tabet, Nouar; Faiz, M.; Yamzaki, Toshinari.

In: Nanoscale Research Letters, Vol. 4, No. 8, 27.04.2009, p. 948-954.

Research output: Contribution to journalArticle

Qurashi, Ahsanulhaq ; Tabet, Nouar ; Faiz, M. ; Yamzaki, Toshinari. / Ultra-fast microwave synthesis of ZnO nanowires and their dynamic response toward hydrogen gas. In: Nanoscale Research Letters. 2009 ; Vol. 4, No. 8. pp. 948-954.
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