Erişim şekli için "info:eu-repo/semantics/closedAccess" Makale Koleksiyonu listeleme
Toplam kayıt 44, listelenen: 21-40
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Photocatalytic oxidation of aromatic alcohols to aldehydes in aqueous suspension of home-prepared titanium dioxide 1. Selectivity enhancement by aliphatic alcohols
(Elsevier Science BV, 2008)Oxygenated aqueous suspensions of home-prepared (HP) and commercial TiO2 catalysts were used in a batch photoreactor for carrying out the oxidation of benzyl alcohol (BA) and 4-methoxybenzyl alcohol (MBA) under different ... -
Photocatalytic oxidation of nitrobenzene and phenylamine: Pathways and kinetics
(John Wiley & Sons Inc, 2007)The oxidation of nitrobenzene and phenylamine has been carried out by heterogeneous photocatalysis in aqueous suspensions of commercial TiO2. The photoreactivity results indicate that two reaction pathways occur in parallel ... -
Photocatalytic selective oxidation of 4-methoxybenzyl alcohol to aldehyde in aqueous suspension of home-prepared titanium dioxide catalyst
(Wiley-V C H Verlag GMBH, 2007)The photocatalytic oxidation of 4-methoxybenzyl alcohol to p-anisaldehyde (PAA) was performed in water with organic-free suspensions of home-prepared and commercial titanium dioxide (TiO2) catalysts. The nanostructured ... -
Photodegradation of pharmaceutical drugs in aqueous TiO2 suspensions: Mechanism and kinetics
(Elsevier Science BV, 2007)The degradation and mineralization of Tamoxifen (TAM) and Gemfibrozil (GEM) drugs, whose molecular structures exhibit ethereal bonds, have been carried out by irradiating aqueous suspensions of TiO2 with near-UV light at ... -
Polyvalent integrin antagonist-decorated superparamagnetic iron oxide nanoparticles for triggering apoptosis in human leukemia cancer cells
(Springer, 2013)Integrin family members are the main mediators of cell adhesion to the extracellular matrix and active as intra- and extracellular signaling molecules in a variety of processes. They bind to their ligands by interacting ... -
Preparation of new molecularly imprinted quartz crystal microbalance hybride sensor system for 8-hydroxy-2 '-deoxyguanosine determination
(Elsevier Science BV, 2009)The routine measurement of 8-hydroxy-2'-deoxyguanosine (8-OHdG) in biological samples is a difficult analytical problem due to the low levels of the analyte and complex matrix. A new 8-OHdG imprinted quartz crystal ... -
Protonation, tautomerization and valence tautomerization of selected imidazo[4,5-f]quinolines. A theoretical study of gas and liquid basicity of imidazo[4,5-f]quinolines
(1993)The theoretical calculations on imidazo[4,5-f] quinolines has shown that the first protonation takes place at the pyridine, nitrogen atom rather than at the imidazole nitrogen atom. The preferred tautomeric form was found ... -
A quantitative method of photoadsorption determination for irradiated catalyst in liquid-solid system
(Elsevier Science BV, 2009)A method for determining the amount of substrate adsorbed onto the catalyst surface in liquid-solid photocatalytic system under reaction conditions (photoadsorption) is proposed. The method has been applied to the ... -
Rapid direct spectrophotometric determination of zirconium(IV) in alloys with 2,2/,3,4-tetrahydroxy-3/-sulpho-5/-carboxyazobenzene reagent
(2011)In this study, 2, 2', 3, 4-tetrahydroxy-3'-sulpho-5'-carboxyazobenzene (tetrahydroxyazon SC) has been synthesized for the first time and used for direct spectrophotometric determination of zirconium(IV). Tetrahydroxyazon ... -
Reaktif organobentonit katkıların sert poliüretan köpüğün bazı performans özellikleri üzerine etkisi
(Gazi Universitesi Muhendislik-Mimarlik, 2017)Bu çalışmada; bentonit, amin ve hidroksil fonksiyonelliğine sahip bileşikler ile modifiye edilmiş ve elde edilen organobentonitler sert poliüretan köpük nanokompozit (SPKN) sentezinde katkı olarak kullanılmışlardır. ... -
Reverse atom transfer radical polymerization of stearyl methacrylate using 2,2'-azobisisobutyronitrile as the initiator
(2002)The living/controlled radical polymerization of stearyl methacrylate was carried out with a conventional radical initiator (2,2'-azobisisobutyronitrile) in N,N-dimethylformamide in the presence of a 2,2'-bipyridine complex ... -
Selective photocatalytic oxidation of 4-substituted aromatic alcohols in water with rutile TiO2 prepared at room temperature
(Royal Soc Chemistry, 2009)Home-prepared (HP) rutile TiO2 catalysts were prepared at room temperature by using H2O and TiCl4 in different ratios and without addition of additives. The catalysts were used for carrying out the selective photocatalytic ... -
Selective photocatalytic oxidation of aromatic alcohols in solar-irradiated aqueous suspensions of Pt, Au, Pd and Ag loaded TiO2 catalysts
(Elsevier Science BV, 2017)The photocatalytic partial oxidation of 4-methoxybenzyl alcohol (MBA) and 4-nitrobenzyl alcohol (NBA) to corresponding aldehydes or acids was performed in water under simulated solar light at different pH's by using Pt, ... -
Selective separation of uranium containing glutamic acid molecular-imprinted polymeric microbeads
(Marcel Dekker Inc, 2003)… -
Selective solid-phase extraction of Cd(II) using double imprinting strategy
(2010)Molecular imprinting technology is a strategy for producing chemically selective binding sites, which recognize a particular molecule, in a macroporous polymer matrix. Molecular recognition-based separation techniques have ... -
Self-assembled titania-silica-sepiolite based nanocomposites for water decontamination
(Royal Soc Chemistry, 2009)This work describes the preparation of microchannel structured monolithic pieces by the "ice-segregation induced self-assembly'' (ISISA) process. The monoliths exhibit a hierarchical structure composed of homogeneously ... -
A semi-empirical and density functional theory study of 2,2',3,4-tetrahydroxy-3'-sulpho azobenzene derivatives and their zirconium complexes
(2013)In this study, certain theoretical properties of three tetrahydroxyazo derivatives and their zirconium complexes, such as stability, reactivity, geometry and energy have been calculated by MOPAC2009 with the PM6 method and ... -
Separation of catechins and methylxanthines in tea samples by capillary electrochromatography
(2009)In this paper, the simultaneous separation of several polyphenols such as (+)-catechin, (-)-epicatechin, (-)-epigallocatechin, theophylline, caffeine in green and black teas by capillary electrochromatography (CEC) was ... -
Spectrophotometric determination of the acidity dissociation constants of symmetric Schiff base derivatives
(Gazi University Eti Mahallesi, 2014)In this study, the acidity constants of series symmetric Schiff base derivatives have been determined using the UV-visible spectrophotometric method at a temperature of 25(±0.1) °C. The deprotonated acidity constants (pKa) ... -
Structural studies of water-soluble ß-brominated manganese porphyrins: Stabilities of MnTDCSPPBr8 and MnTSPPBr8 as homogeneous and supported reagents toward hydrogen peroxide and sodium hypochlorite
(2001)This article describes the structural stabilities of [2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetrakis(2,6-dichloro-3- sulfonatophenyl)porphinato]manganese(III) X (where X = H2O and/or OH-, depending on pH) (MnTDCSPPBr8) ...