Tin oxide thin films were deposited on glass substrate at (400 ºC) by using chemical spray pyrolysis technique and its composed with cobalt oxide in different ratio. The structural, morphologic and optical properties of thin films are investigated by: (XRD) X-Ray Diffraction, (AFM) Atomic Force Microscopy, (UV-Vis )Ultraviolet – Visible Spectroscopy. XRD patterns indicate that the structure of tin oxide thin film is tetragonal. All prepared films were nano materials as stated by Scherrer equation. It might have been found by AFM analysis, those surface roughness increase with increasing of cobalt ratio. By provision about Tauc plots, optical band gaps for thin
The present study enclosed the employment of low cost industrial waste rice husk for the removal of Eriochrome Black T by adsorption technique. The impact of some parameters was studied like agitation time, biosorbent dose and temperature. The bioadsorption information were analyzed by langmuir and Freundlich isotherm models at equilibrium. The adsorption capacities (Qm) obtained from the Langmuir isotherm plots were 40.00, 39.68, 38.91 and 38.00 mg/g respectively at pH adequate to of 7.0 at 30, 40, 50and 60 C°. The study of the temperature diversity incontestible that the EBT adsorption is endothermicand spontaneous with distended irregularity at the solid-solution interface. thermodynamic quantities as change in (ΔH°), change in entropy (ΔS°) and change in free energy (ΔG°) were additionallyinvestigated. Free energy change showed that bioadsorption of Eriochrome Black T was spontaneous in any respect studied temperatures (30–60 C°).It was implicit that rice husk could also be appropriate as an adsorbent for removal of Eriochrome Black T.
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