HYDROGEN GAS SENSING OF ZnO NANOWIRES SYNTHESIS BYHYDROTHERMAL TECHNIQUE

摘要

Zinc oxide nanowires were synthesized by simple hydrothermal method at 65oC for 12hour. We have used the neutrient solution of zinc-nitrate ((Zn(NO3)2) with hexamethylenetetramine (C6H12N4) in equimolar ratio. Growth pattern of ZnO NWs were epitaxial andinvestigated by X-ray diffraction for crystal structure that shows the zinc oxide nanowiresare in hexagonal (wurtzite) structure form. UV-visible photometer spectro calculate theabsorption (amalgamation) spectrum of zinc oxide nanowires. The surface morphology ofas synthesized zinc oxide nanowires was measured by Field Emission Scanning ElectronMicroscopy (FE-SEM). The sensor manufactured by zinc oxide (ZnO) nanowires grownby hydrothermal technique was utilized for hydrogen gas sensing at 150oC for about 1000ppm concentration. The detector manufacture for hydrogen sensing shows a reversiblecycle. The affect of working temperature was also tested on hydrogen gas sensingproperties of ZnO nanowires.