Herein we report a new, simple, low cost and one step way to obtain silica-supported silver nanoparticles (AgNPs) on commercial polyethyleneimine-functionalized silica beads (SiO2-PEI) under mild experimental conditions. The novel AgNPs/(SiO2-PEI) material has been thoroughly analyzed using FE-SEM, BET, XRD, XPS and XE-AES analysis. The reduction of Methylene Blue (MB) to Leuco Methylene Blue (LMB) in the presence of NaBH4 was chosen for testing the catalytic properties of AgNPs/(SiO2-PEI) towards dyes decoloration. Moreover, the prepared supported nanocatalyst was also found to exhibit excellent catalytic activity towards decoloration of some azo dyes such as E110 and E122.
Mild fabrication of silica-silver nanocomposites as active platforms for environmental remediation / Adriana Mignani; Silvia Fazzini; Barbara Ballarin; Elisa Boanini; Maria Cristina Cassani; Chiara Maccato; Davide Barreca; Daniele Nanni. - In: RSC ADVANCES. - ISSN 2046-2069. - STAMPA. - 5:(2015), pp. 9600-9606. [10.1039/c4ra14069a]
Mild fabrication of silica-silver nanocomposites as active platforms for environmental remediation
MIGNANI, ADRIANA;FAZZINI, SILVIA;BALLARIN, BARBARA;BOANINI, ELISA;CASSANI, MARIA CRISTINA;NANNI, DANIELE
2015
Abstract
Herein we report a new, simple, low cost and one step way to obtain silica-supported silver nanoparticles (AgNPs) on commercial polyethyleneimine-functionalized silica beads (SiO2-PEI) under mild experimental conditions. The novel AgNPs/(SiO2-PEI) material has been thoroughly analyzed using FE-SEM, BET, XRD, XPS and XE-AES analysis. The reduction of Methylene Blue (MB) to Leuco Methylene Blue (LMB) in the presence of NaBH4 was chosen for testing the catalytic properties of AgNPs/(SiO2-PEI) towards dyes decoloration. Moreover, the prepared supported nanocatalyst was also found to exhibit excellent catalytic activity towards decoloration of some azo dyes such as E110 and E122.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
