Rapid microwave assisted synthesis of Zn1-xInxO heterostructured nanotetrapods and their hydrogen sensing properties

M. Faiz, Ahsanulhaq Qurashi, Nouar Tabet

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Zn1-xInxO nanostructures have been synthesized in large quantity by a microwave-assisted evaporation method. A mixture of high purity zinc and indium metal flakes evaporated under ambient air using a microwave absorber placed in a conventional microwave oven. This is single step, fast and very effective method to produce large quantity (grams) of Zn1-xInxO nanotetrapods. The synthesized nanotetrapods powder was characterized by X-ray Photoelectron Spectroscopy (XPS), X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), and Transmission Electron Microscopy (TEM). The observations and analyses confirmed the formation of high aspect-ratio nanotetrapods and the incorporation of In into the ZnO creating heterostructure. Hydrogen gas sensor made from the nanotetrapods Zn1-xInxO showed reversible response and recovery. The results are consistent with a sensing mechanism controlled by the presence of a space charge region at the surface of the sensor.

Original languageEnglish
Pages (from-to)159-164
Number of pages6
JournalVacuum
Volume130
DOIs
Publication statusPublished - 1 Aug 2016

Fingerprint

Hydrogen
Microwaves
Microwave ovens
microwaves
Indium
hydrogen
synthesis
Chemical sensors
Electric space charge
Field emission
Powders
Heterojunctions
Zinc
Aspect ratio
Nanostructures
Evaporation
X ray photoelectron spectroscopy
Metals
flakes
sensors

Keywords

  • H gas sensor
  • Microwave synthesis
  • Nanotetrapods
  • XPS analysis
  • ZnInO

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Instrumentation
  • Surfaces, Coatings and Films

Cite this

Rapid microwave assisted synthesis of Zn1-xInxO heterostructured nanotetrapods and their hydrogen sensing properties. / Faiz, M.; Qurashi, Ahsanulhaq; Tabet, Nouar.

In: Vacuum, Vol. 130, 01.08.2016, p. 159-164.

Research output: Contribution to journalArticle

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