Papers by Ozge Kerkez
RSC Advances, 2016
Long TiO2 nanotubes (TNs) were successfully prepared by the reaction of TiO2 and NaOH.
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Chemical Engineering Communications, 2014
ABSTRACT Ag2O modified TiO2 nanoparticles were synthesized by precipitation and wet impregnation ... more ABSTRACT Ag2O modified TiO2 nanoparticles were synthesized by precipitation and wet impregnation method. They were characterized by X-ray diffraction technique, UV-vis diffuse reflectance spectrophotometry and Fourier transform infrared spectroscopy. Inductively coupled plasma mass spectrometry was performed to quantify Ag amount in the photocatalysts. The photocatalysts occurred in the concentration range of 0.05%–2% in the Ag/Ti molar ratio. The photocatalytic activity was investigated for the degradation of methylene blue as a model organic dye. Optimum reaction conditions were determined to provide maximum dye degradation efficiencies under visible light. Under visible light illumination, C2-Ag2O/TiO2 (Ag/Ti = 0.1/100) showed the highest activity. Reaction rate constants were calculated and compared for various reaction conditions.
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Reaction Kinetics, Mechanisms and Catalysis, 2013
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Journal of Physics and Chemistry of Solids, 2014
ABSTRACT In the present study, a two step method was applied to synthesize Cu2+ modified TiO2 nan... more ABSTRACT In the present study, a two step method was applied to synthesize Cu2+ modified TiO2 nanorod array thin films for photocatalytic processes. TiO2 nanorod array thin films were synthesized by a hydrothermal method and then modified with ultrasonic assisted sequential cation adsorption method. The samples were characterized by XRD, UV-vis DRS, SEM, PL Spectroscopy and ICP-MS analysis. The photoelectrochemical properties of the samples were evaluated by linear sweep voltammetry and Mott-Schottky analysis; photocatalytic activities were tested by methylene blue degradation under visible light. The photocurrent density of the TiO2/FTO sample modified with 50 mM Cu2+ solution was 26 times higher than that of the unmodified TiO2/FTO. Additionally, methylene blue degradation efficiency under visible light was increased 40% with respect to the efficiency of the unmodified sample. The mechanism of the photocatalytic activity enhancement of Cu2+ modified TiO2 nanorod films was discussed.
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Journal of Nanoparticle Research, 2014
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Chemical Engineering Research and Design, 2014
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International Journal of Environmental Science and Technology, 2015
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Reaction Kinetics, Mechanisms and Catalysis , Dec 2013
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Journal of Nanoparticle Research, 2014
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Desalination and Water Treatment, Jan 1, 2012
An organic dye, methylene blue (MB), was separated from a model aqueous solution by using adsorpt... more An organic dye, methylene blue (MB), was separated from a model aqueous solution by using adsorption method with low cost resin adsorbents. The adsorption of MB was studied with Amberlite XAD-16 and Amberlite XAD-7 HP. The aim of the study is to achieve a high removal value of the dye and comparing these two adsorbents for MB adsorption. Adsorption of
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Reaction Kinetics, Mechanisms and Catalysis, Jan 1, 2010
Page 1. Effects of boehmite synthesis conditions on the epoxidation of styrene ˙Ismail Boz O¨ z... more Page 1. Effects of boehmite synthesis conditions on the epoxidation of styrene ˙Ismail Boz O¨ zge Kerkez Received: 9 November 2009 / Accepted: 16 March 2010 / Published online: 9 April 2010 Ó Akadémiai Kiadó, Budapest, Hungary 2010 ...
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Publications by Ozge Kerkez
Desalination and Water Treatment, 2012
An organic dye, methylene blue (MB), was separated from a model aqueous solution by using adsorpt... more An organic dye, methylene blue (MB), was separated from a model aqueous solution by using adsorption method with low cost resin adsorbents. The adsorption of MB was studied with Amberlite XAD-16 and Amberlite XAD-7 HP. The aim of the study is to achieve a high removal value of the dye and comparing these two adsorbents for MB adsorption. Adsorption of MB was investigated in terms of equilibrium and kinetics conditions. Adsorption isotherms were determined and correlated with equations such as Freundlich, Langmuir and Temkin isotherm models. Langmuir isotherm has good agreement with R 2 value over 0.99. Pseudo second order model was fitted for this adsorption system. Here we showed that 99% removal of MB can be achieved with Amberlite XAD-16. SEM studies revealed the morphological observations of the unloaded adsorbent and the changes in the adsorbed polymeric resin. FTIR spectrums of adsorbents before and after the adsorption supported the SEM results.
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Papers by Ozge Kerkez
Publications by Ozge Kerkez