Yazar "Metin, Aysegul U." için listeleme
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Anionic dye removal from aqueous solutions using modified zeolite: Adsorption kinetics and isotherm studies
Alver, Erol; Metin, Aysegul U. (Elsevier Science Sa, 2012)The natural zeolite was modified with hexamethylenediamine (HMDA) and used as adsorbent to remove anionic dyes, namely Reactive Red 239 (RR-239) and Reactive Blue 250 (RB-250). And, the adsorption equilibrium and kinetic ... -
Efficient Removal of Acidic Dye Using Low-Cost Biocomposite Beads
Metin, Aysegul U.; Ciftci, Hakan; Alver, Erol (Amer Chemical Soc, 2013)The objective of this study is to prepare and characterize chitosan/zeolite biocomposite beads and utilize them as adsorbent for removal of anionic dye, Acid Black 194 (AB194). Characterization studies of biocomposite beads ... -
Electrochemical copper (II) sensor based on chitosan covered gold nanoparticles
Ciftci, Hakan; Tamer, Ugur; Metin, Aysegul U.; Alver, Erol; Kizir, Nevin (Springer, 2014)This study outlines a new sensing platform based on glassy carbon electrodes modified by gold nanoparticles (AuNPs) for the determination of heavy metal. A glassy carbon electrode was modified by chitosan stabilized AuNPs. ... -
Fabrication and characterization of gold-nanoparticles/chitosan film: a scaffold for L929-fibroblasts
Turk, Mustafa; Tamer, Ugur; Alver, Erol; Ciftci, Hakan; Metin, Aysegul U.; Karahan, Siyami (Taylor & Francis Ltd, 2013)The objective of the present study was to fabricate a gold nanoparticle crosslinked chitosan (Ch/AuNPs) composite film simple and to evaluate its use as a carrier matrix for L929-fibroblasts. L929-fibroblasts were seeded ... -
Hydroxyapatite-based nanoparticles as a coating material for the dentine surface: An antibacterial and toxicological effect
Erdem, Umit; Dogan, Mustafa; Metin, Aysegul U.; Baglar, Serdar; Turkoz, Mustafa B.; Turk, Mustafa; Nezir, Saffet (ELSEVIER SCI LTD, 2020)In this study, nano sized hydroxyapatite (nHAp) and Ag(I) doped hydroxyapatite (Ag-nHAp) particles were synthesized by the precipitation method and used as a coating material for remineralization on caries-affected dentine ... -
Immobilization of laccase onto polyethyleneimine grafted chitosan films: Effect of system parameters
Metin, Aysegul U. (Polymer Soc Korea, 2013)Chitosan films were prepared via phase-inversion technique. The polyethyleneimine (PEI) was grafted onto chitosan films after activation with various agents, such as epichlorohydrin, genipin and glutaraldehyde. The PEI ... -
Immobilization studies and biochemical properties of free and immobilized Candida Rugosa lipase onto hydrophobic group carrying polymeric support
Metin, Aysegul U. (Polymer Soc Korea, 2013)In this study, the hydrophobic group carrying support was prepared for the immobilization of Candida rugosa lipase through the reversible adsorption method. Epoxy groups containing poly(glycidyl methacrylate-methyl ... -
Non-enzymatic sensing of glucose using a glassy carbon electrode modified with gold nanoparticles coated with polyethyleneimine and 3-aminophenylboronic acid
Ciftci, Hakan; Alver, Erol; Celik, Filiz; Metin, Aysegul U.; Tamer, Ugur (Springer Wien, 2016)A non-enzymatic electrochemical method was developed for sensing glucose by using a glassy carbon electrode modified with 3-aminophenylboronic acid (APBA) immobilized on polyethyleneimine (PEI)-coated gold nanoparticles. ... -
Synthesis and Characterization of Chitosan/Polyvinylpyrrolidone/Zeolite Composite by Solution Blending Method
Alver, Erol; Metin, Aysegul U.; Ciftci, Hakan (Springer, 2014)Polymer/clay composites have been studied for several decades; in the study, polymer/zeolite composite beads have been prepared by a simple solution blending method using chitosan, polyvinylpyrrolidone and zeolite particles ... -
Synthesis, Physical Properties, and Application of Aminated Poly(glycidyl methacrylate)/Zeolite Composite
Metin, Aysegul U. (Wiley, 2016)Poly(glycidyl methacrylate)/zeolite (PGMA/Z) composite was prepared by free radical polymerization and it was further modified to contain amino groups on its surface, by reacting to hexamethylenediamine. FTIR, TG, and SEM ...