Preparation of nano films from ZnO / MWCNT and study their applications as a gas sensor

Thin nanoparticles of zinc oxide were prepared using sol-gel. The samples were prepared with different nano thin film (62 ,71 , 85)nm, Various weight ratios were added from the MWCNT to the colloidal solution and at a rate of (0.423% , 0.921% , 1.624% . 2.357%). These solutions were deposited by using the spin coating technique on the glass substrate..For the purpose of knowing the sensitivity and the extent of response of these samples to detect the different vapors of some toxic gases (ethanol ,methanol , acetone and nitrogen). Nano thin film were prepared by using spin coting technique. The synthetic properties of these membranes were studied using X-ray diffraction. The results showed that the prepared membranes were crystallized and close to the standard values. Among the AFM samples, the surface roughness was increased, Making it more sensitive. The ability of the response of the ZnO / MWCNT membranes to all fish to respond to the fumes of these gases was studied. The highest response was found in the ethanol vapor and at the thickness 71nm and at the weight ratio 1.624% for methanol.

کلیدواژه ها:

zno ، MWCNT ، Vapors ، Sensor ، Thickness