Browsing by Author "Avramova, I."
Now showing items 1-5 of 5
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CeOx/Al2O3 thin films on stainless steel substrate-dynamical X-ray photoelectron spectroscopy investigations
Avramova, I.; Süzer, Şefik; Guergova, D.; Stoychev, D.; Stefanov, P. (Elsevier, 2013)The CeOx/Al2O3 thin films on stainless steel with different ceria loading were subjected to a.c. (square wave) pulses at various frequencies in the range 10- 3 to 100 kHz while recording X-ray photoelectron spectra. The ... -
Combined XPS and contact angle studies of ethylene vinyl acetate and polyvinyl acetate blends
Ucar, I. O.; Doganci, M. D.; Cansoy, C. E.; Erbil, H. Y.; Avramova, I.; Süzer, Şefik (Elsevier, 2011-09-01)In this study, we prepared thin films by blending ethylene vinyl acetate copolymers (EVA) containing 12-33 (wt.%) vinyl acetate (VA) with polyvinyl acetate (PVAc) and high density polyethylene homopolymers. Large area ... -
Spectroscopic characterization of gold supported on tungstated zirconia
Kantcheva, M.; Milanova, M.; Avramova, I.; Mametsheripov, S. (Elsevier, 2012)Gold catalysts supported on tungstated zirconia (containing 5–20 wt% WO3) are prepared by cationic adsorption from aqueous solution of [Au(en)2]Cl3 complex. The materials are characterized by XRD, DRUV–vis spectroscopy ... -
Structural and optical properties of Cu-doped ZnAl2O4 and its application as photocatalyst for Cr(VI) reduction under sunlight
Akika, F. Z.; Benamira, M.; Lahmar, H.; Trari, M.; Avramova, I.; Süzer, Şefik (Elsevier, 2020)Cu-doped ZnAl2O4 spinel oxides (Zn(1-x)CuxAl2O4, 0.0 ≤ x ≤ 1.0) were synthesized by co-precipitation method at 800 °C. The X-ray diffraction analysis of the as-prepared powders confirmed a spinel structure with a space ... -
Structural and optical properties of Cu-substitution of NiAl2O4 and their photocatalytic activity towards Congo red under solar light irradiation
Akika, F. Z.; Benamira, M.; Lahmar, H.; Tibera, A.; Chabi, R.; Avramova, I.; Süzer, Şefik; Trari, M. (Elsevier, 2018)The present work focuses on the effect of Cu substitution on the crystal structure and photocatalytic activity of nano-spinel oxides Ni(1−x)CuxAl2O4 (x = 0.0-1.0). The synthesized compounds by co-precipitation route are ...