Documents disponibles écrits par cet auteur

Prunus domestica fruit extract-mediated synthesis of gold nanoparticles and its catalytic activity for 4-nitrophenol reduction / Preeti Dauthal in Industrial & engineering chemistry research, Vol. 51 N° 40 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13014-13020 Titre : Prunus domestica fruit extract-mediated synthesis of gold nanoparticles and its catalytic activity for 4-nitrophenol reduction Type de document : texte imprimé Auteurs : Preeti Dauthal, Auteur ; Mausumi Mukhopadhyay, Auteur Année de publication : 2012 Article en page(s) : pp. 13014-13020 Note générale : industrial chemistry Langues : Anglais (eng) Mots-clés : Catalyst  activity  Nanoparticle  Extract Résumé : Gold nanoparticles (Au-NPs) were synthesized at room temperature using Prunus domestica (plum) fruit extract as reducing agent. The UV―visible absorption spectrum showed a characteristic optical absorption peak of Au-NPs at 543 nm. The X-ray diffraction pattern suggested the formation and crystallinity of Au-NPs. Spherical Au-NPs synthesized with an average particle size of 20 ± 6 nm were confirmed by transmission electron microscopy. Fourier transform infrared spectroscopy analysis supported the role of water-soluble polyols and amino adds of plum fruit extract for bioreduction and stabilization of Au-NPs. The catalytic activity of Au-NPs was investigated for 4-nitrophenol (4-NP) reduction using UV―visible absorption spectroscopy. Biosynthesized Au-NPs showed a dose-dependent catalytic activity. Catalytic reduction followed pseudo-first-order kinetics with respect to 4-NP. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451450 [article] Prunus domestica fruit extract-mediated synthesis of gold nanoparticles and its catalytic activity for 4-nitrophenol reduction [texte imprimé] / Preeti Dauthal, Auteur ; Mausumi Mukhopadhyay, Auteur . - 2012 . - pp. 13014-13020. industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13014-13020 Mots-clés : Catalyst  activity  Nanoparticle  Extract Résumé : Gold nanoparticles (Au-NPs) were synthesized at room temperature using Prunus domestica (plum) fruit extract as reducing agent. The UV―visible absorption spectrum showed a characteristic optical absorption peak of Au-NPs at 543 nm. The X-ray diffraction pattern suggested the formation and crystallinity of Au-NPs. Spherical Au-NPs synthesized with an average particle size of 20 ± 6 nm were confirmed by transmission electron microscopy. Fourier transform infrared spectroscopy analysis supported the role of water-soluble polyols and amino adds of plum fruit extract for bioreduction and stabilization of Au-NPs. The catalytic activity of Au-NPs was investigated for 4-nitrophenol (4-NP) reduction using UV―visible absorption spectroscopy. Biosynthesized Au-NPs showed a dose-dependent catalytic activity. Catalytic reduction followed pseudo-first-order kinetics with respect to 4-NP. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451450