Facile Synthesis of Rose-Like NiO Nanoparticles and Their Ethanol Gas-Sensing Property

【摘要】 In this study,rose-like nickel oxide（NiO） nanoparticles with diameters of 400-500 nm are prepared on ITO glass substrates by simple electrodeposition in MSO₄6H₂O solution at room temperature followed by oxidation in air.Scanning electron microscopy,x-ray diffraction and a transmission electron microscope are used for analyses of the NiO nanoparticles.The ethanol gas sensitivity of these nanoparticles is studied.The results indicate that the rose-like NiO nanoparticles could be used for the fabrication of ethanol gas sensors to monitor the low concentration of ethanol gas in air.Furthermore,at 5ppm,the NiO nanorose-based sensors show a high response to ethanol（R_g/R_a= 8.4）.更多还原

【Abstract】 In this study,rose-like nickel oxide（NiO） nanoparticles with diameters of 400-500 nm are prepared on ITO glass substrates by simple electrodeposition in MSO₄6H₂O solution at room temperature followed by oxidation in air.Scanning electron microscopy,x-ray diffraction and a transmission electron microscope are used for analyses of the NiO nanoparticles.The ethanol gas sensitivity of these nanoparticles is studied.The results indicate that the rose-like NiO nanoparticles could be used for the fabrication of ethanol gas sensors to monitor the low concentration of ethanol gas in air.Furthermore,at 5ppm,the NiO nanorose-based sensors show a high response to ethanol（R_g/R_a= 8.4）.更多还原