The α Fe 2 O 3 sol was prepared by a sol gel method from FeCl 3 ·6H 2 O. Thin nano particulate films of the α Fe 2 O 3 were deposited on glass substrate by dip coating sol gel technique. The structure and morph...The α Fe 2 O 3 sol was prepared by a sol gel method from FeCl 3 ·6H 2 O. Thin nano particulate films of the α Fe 2 O 3 were deposited on glass substrate by dip coating sol gel technique. The structure and morphology of the thin films were characterized by XRD, UV Vis and AFM analysis methods. The XRD results revealed that the nano crystal with (104) preferential orientation has been formed on glass substrate. The UV Vis spectra showed that the nano particulate films obtained from Fe 2 O 3 aqueous colloidal sols are well transferred to glass substrate at dip coating rate of 80 mm/min. The α Fe 2 O 3 particles are ellipsoidal shaped, with particle size of about 5～7 nm. The multilayer films exhibited high sensitivity to ethanol vapor at room temperature.展开更多
文摘The α Fe 2 O 3 sol was prepared by a sol gel method from FeCl 3 ·6H 2 O. Thin nano particulate films of the α Fe 2 O 3 were deposited on glass substrate by dip coating sol gel technique. The structure and morphology of the thin films were characterized by XRD, UV Vis and AFM analysis methods. The XRD results revealed that the nano crystal with (104) preferential orientation has been formed on glass substrate. The UV Vis spectra showed that the nano particulate films obtained from Fe 2 O 3 aqueous colloidal sols are well transferred to glass substrate at dip coating rate of 80 mm/min. The α Fe 2 O 3 particles are ellipsoidal shaped, with particle size of about 5～7 nm. The multilayer films exhibited high sensitivity to ethanol vapor at room temperature.
