Volume 2 Number 12 December 2017
Poly (vinylalcohol)-, Polystyrene/Theta Type Zirconium Phosphate Nanocomposite Membranes
Authors: S. K. Shakshooki ; F. Masaudi ; F. El-Akari ; A. Jangher
Novel nanosized theta-type zirconium phosphate, θ-Zr(HPO4)2.1.88H2O (θ-typeZrP), was prepared and characterized. Its average size particles calculated from XRD broadening method using the Scherer’s equation , found to be 60 nm . Transparent flexible thin films of poly(vinylalcohol) (PVA)-, polystyrene(PS) / theta-type zirconium phosphate nanocomposite membranes were obtained from mixing PVA-, PS solutions with different weight percentages of θ-typeZrP equal to (5,10,15,20% in wt), respectively. The resultant nanocomposite membranes were characterized by XRD and TGA,. The inorganic filler, θ-typeZrP, was well dispersed in the organic polymers matrix , show good thermal and mechanical properties better than that of the original polymers. These nanocomposites are promising for utilizations in fuel cells and as sorbents.
Photocatalysis of Chlorazole Black E Dyes Using Titanium Dioxide Doped With Iron (Fe-TiO2)
Authors: Amana B. S. ; Yilleng M. ; Ayebe B. ; Tanko S. F. ; putshaka J. D. ; Akabuogu E. P.
Fe-TiO2 catalyst was implemented for photo mineralization of chlorazole black E dye. Percentage conversion. 67.2% , 74.8% and 62.8% using 1%, 3% and 5% Fe-TiO2 under Visible light and 73.3%, 67.2% and 62.8% using 1%, 3% and 5% Fe-TiO2 under UV light after irradiation for 80 Minutes respectively. Fe-TiO2 under UV/Visible light has proven to be effective through the investigation which was synthesize through wet-impregnation, calcined and characterized to determine the group resulting from bond vibrations using FT-IR and crystalline phase of the catalyst via XRD pattern. It was then subjected to photo-degradation to optimize various experimental parameters such as effects of metal loads, light source and time. The obtained result are shown in decreasing order of activity 3% Fe-TiO2 > 1%Fe-TiO2 >5%Fe-TiO2. Which indicate that 3% Fe-TiO2 shows more photo-degradation at UV/Visible but does more better at visible region with respect to time.