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

9 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

Keywords

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

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Rapid microwave assisted synthesis of Zn<sub>1-x</sub>In<sub>x</sub>O heterostructured nanotetrapods and their hydrogen sensing properties'. Together they form a unique fingerprint.

  • Cite this