Preparation and formation mechanism of silver particles with spherical open structures / Roberto Irizarry in Industrial & engineering chemistry research, Vol. 50 N° 13 (Juillet 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8023-8033 Titre : Preparation and formation mechanism of silver particles with spherical open structures Type de document : texte imprimé Auteurs : Roberto Irizarry, Auteur ; Lourian Burwell, Auteur ; Madeline S. Leon-Velazquez, Auteur Année de publication : 2011 Article en page(s) : pp. 8023-8033 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Formation mechanism Preparation Résumé : A new type of highly dispersible silver particles has been developed consisting of two- and three-dimensional building blocks that form spherical shapes with open structures. The first morphology consists of uniform particles that are composed of anisotropic building blocks mainly in the form of a network of platelets forming a spherical, open-structured particle. These platelets are 100-2000 nm in length, with a crystallite size in the range 20-100 nm. The second morphology consists of isotropic components that are 100-500 nm in length, with a crystallite size in the range of 20-100 nm. In both cases, the silver powder was comprised of well-defined monosized particles and was highly dispersible. These powders were prepared by rapidly mixing a silver solution with an ascorbic acid/sodium citrate solution at low pH. A mechanism is proposed for the formation of these novel structures. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332127 [article] Preparation and formation mechanism of silver particles with spherical open structures [texte imprimé] / Roberto Irizarry, Auteur ; Lourian Burwell, Auteur ; Madeline S. Leon-Velazquez, Auteur . - 2011 . - pp. 8023-8033. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8023-8033 Mots-clés : Formation mechanism Preparation Résumé : A new type of highly dispersible silver particles has been developed consisting of two- and three-dimensional building blocks that form spherical shapes with open structures. The first morphology consists of uniform particles that are composed of anisotropic building blocks mainly in the form of a network of platelets forming a spherical, open-structured particle. These platelets are 100-2000 nm in length, with a crystallite size in the range 20-100 nm. The second morphology consists of isotropic components that are 100-500 nm in length, with a crystallite size in the range of 20-100 nm. In both cases, the silver powder was comprised of well-defined monosized particles and was highly dispersible. These powders were prepared by rapidly mixing a silver solution with an ascorbic acid/sodium citrate solution at low pH. A mechanism is proposed for the formation of these novel structures. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332127

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