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Rapid, facile synthesis of silver nanostructure using hydrolyzable tannin / Emrah Bulut in Industrial & engineering chemistry research, Vol. 48 N° 12 (Juin 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 12 (Juin 2009) . - pp. 5686–5690 Titre : Rapid, facile synthesis of silver nanostructure using hydrolyzable tannin Type de document : texte imprimé Auteurs : Emrah Bulut, Auteur ; Mahmut Özacar, Auteur Année de publication : 2009 Article en page(s) : pp. 5686–5690 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Silver  nanoparticles  Distinct  synthesis  process  Facial  synthesis  process  Aqueous  medium  Tannin Résumé : A facial and distinct synthesis process of silver nanoparticles stabilized by tannin in aqueous medium is reported. Silver nitrate is solubilized in water as the source of silver ions, and tannin is solubilized in water as both a reducing agent and stabilizer matter. Due to hydroxyl groups and the dendritic macrostructure of tannin, it was used as both a reducer and stabilizer. The concentrations of tannin and of AgNO3 solution were changed to observe variation in particle size. However the role of the dendritic tannin molecule in forming silver nanoparticles was explained, and changes of the tannin molecule due to the redox reaction were determined by Fourier transform infrared (FTIR) measurements. The structure of synthesized silver nanoparticles has been investigated through scanning electron microscopy (SEM), and X-ray diffraction (XRD) analysis revealed the face-centered cubic (fcc) geometry of silver nanoparticles. Also a UV−vis spectrophotometer was used to obtain the absorption spectrum of silver nanoparticles. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801779f [article] Rapid, facile synthesis of silver nanostructure using hydrolyzable tannin [texte imprimé] / Emrah Bulut, Auteur ; Mahmut Özacar, Auteur . - 2009 . - pp. 5686–5690. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 12 (Juin 2009) . - pp. 5686–5690 Mots-clés : Silver  nanoparticles  Distinct  synthesis  process  Facial  synthesis  process  Aqueous  medium  Tannin Résumé : A facial and distinct synthesis process of silver nanoparticles stabilized by tannin in aqueous medium is reported. Silver nitrate is solubilized in water as the source of silver ions, and tannin is solubilized in water as both a reducing agent and stabilizer matter. Due to hydroxyl groups and the dendritic macrostructure of tannin, it was used as both a reducer and stabilizer. The concentrations of tannin and of AgNO3 solution were changed to observe variation in particle size. However the role of the dendritic tannin molecule in forming silver nanoparticles was explained, and changes of the tannin molecule due to the redox reaction were determined by Fourier transform infrared (FTIR) measurements. The structure of synthesized silver nanoparticles has been investigated through scanning electron microscopy (SEM), and X-ray diffraction (XRD) analysis revealed the face-centered cubic (fcc) geometry of silver nanoparticles. Also a UV−vis spectrophotometer was used to obtain the absorption spectrum of silver nanoparticles. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801779f

Synthesis and characterization of gallic acid resin and its interaction with palladium(II), rhodium(III) chloro complexes / Mustafa Can in Industrial & engineering chemistry research, Vol. 51 N° 17 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 17 (Mai 2012) . - pp. 6052–6063 Titre : Synthesis and characterization of gallic acid resin and its interaction with palladium(II), rhodium(III) chloro complexes Type de document : texte imprimé Auteurs : Mustafa Can, Auteur ; Emrah Bulut, Auteur ; Mahmut Özacar, Auteur Année de publication : 2012 Article en page(s) : pp. 6052–6063 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Gallic  acid  Adsorbent Résumé : Gallic acid (GA) and formaldehyde condensation reaction was carried out under alkaline condition to prepare the gallic acid–formaldehyde resol resin (GAR). Obtained resin was used as adsorbent for recovery of palladium(II) and rhodium(III) ions from chloride-containing solutions. This kind of recovery was very simple and useful for generating little secondary wastes. Interaction of adsorption also was investigated: Chloropalladium(II) species were reduced to Pd(0), while hydroxyl groups of GAR were oxidized during the adsorption. Proposed adsorption of the aquachlororhodium(III) species mostly takes place via ligand exchange mechanism. GAR, Rh-adsorbed GAR, and Pd-adsorbed GAR were characterized by scanning electron microscopy, energy-dispersive spectrometry, X-ray diffraction spectroscopy, and Fourier transform infrared–attenuated total reflection spectroscopy. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300437u [article] Synthesis and characterization of gallic acid resin and its interaction with palladium(II), rhodium(III) chloro complexes [texte imprimé] / Mustafa Can, Auteur ; Emrah Bulut, Auteur ; Mahmut Özacar, Auteur . - 2012 . - pp. 6052–6063. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 17 (Mai 2012) . - pp. 6052–6063 Mots-clés : Gallic  acid  Adsorbent Résumé : Gallic acid (GA) and formaldehyde condensation reaction was carried out under alkaline condition to prepare the gallic acid–formaldehyde resol resin (GAR). Obtained resin was used as adsorbent for recovery of palladium(II) and rhodium(III) ions from chloride-containing solutions. This kind of recovery was very simple and useful for generating little secondary wastes. Interaction of adsorption also was investigated: Chloropalladium(II) species were reduced to Pd(0), while hydroxyl groups of GAR were oxidized during the adsorption. Proposed adsorption of the aquachlororhodium(III) species mostly takes place via ligand exchange mechanism. GAR, Rh-adsorbed GAR, and Pd-adsorbed GAR were characterized by scanning electron microscopy, energy-dispersive spectrometry, X-ray diffraction spectroscopy, and Fourier transform infrared–attenuated total reflection spectroscopy. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300437u