Chemical synthesis of zinc oxide nanorods for enhanced hydrogen gas sensing

doi:10.1088/1674-1056/23/1/018504

Abstract Zinc oxide (ZnO) nanorods are prepared using equimolar solution of zinc nitrate ((Zn(NO₃)₂) and hexamethylenetetramine (C₆H₁₂N₄) by the hydrothermal technique at 80 ℃ for 12 h. Epitaxial growth is explored by X-ray diffraction (XRD) patterns, revealing that the ZnO nanorods have a hexagonal (wurtzite) structure. Absorption spectra of ZnO are measured by UV–visible spectrometer. The surface morphology is investigated by field emission scanning electron microscopy (FESEM). The synthesized ZnO nanorods are used for detecting the 150 ℃ hydrogen gas with a concentration over 1000 ppm. The obtained results show a reversible response. The influence of operating temperature on hydrogen gas detecting characteristic of ZnO nanorods is also investigated.

Keywords: zinc oxide hydrothermal synthesis nanorods hydrogen gas sensor

Received: 25 April 2013
Revised: 02 July 2013
Accepted manuscript online:

PACS:	85.85.+j	(Micro- and nano-electromechanical systems (MEMS/NEMS) and devices)
	85.35.-p	(Nanoelectronic devices)
	81.07.-b	(Nanoscale materials and structures: fabrication and characterization)

Fund: Projected supported by the HEC of Pakistan for international initiative research support programme (IRSIP).

Corresponding Authors: Musarrat Jabeen
E-mail: musarrat95@hotmail.com

Cite this article:

Musarrat Jabeen, Muhammad Azhar Iqbal, R Vasant Kumar, Mansoor Ahmed, Muhammad Tayyeb Javed Chemical synthesis of zinc oxide nanorods for enhanced hydrogen gas sensing 2014 Chin. Phys. B 23 018504

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