Synthesis and Characterization of Jeffamine Core PAMAM Dendrimer-Silver Nanocomposites (Ag JCPDNCs) and Their Evaluation in The Reduction of 4-Nitrophenol

Authors : Mustafa Ulvi GÜRBÜZ, Ali Serol ERTÜRK

Pages : 885-894

Doi:10.18596/jotcsa.428572

View : 21 | Download : 8

Publication Date : 2018-01-01

Article Type : Research Paper

Abstract :This paper presents the synthesis, characterization and catalytic evaluation of Jeffamine core PAMAM dendrimer-silver nanocomposites insert ignore into journalissuearticles values(Ag JCPDNCs);. Generation-4 Jeffamine core PAMAM dendrimer insert ignore into journalissuearticles values(JCPD or P4.NH 2 ); was used as the stabilizing templating agent for the synthesis of Ag-JCPDNCs. Characterization of the synthesized Ag JCPDNC was performed by UV visible insert ignore into journalissuearticles values(UV-Vis); spectroscopy and high resolution transmission electron microscopy insert ignore into journalissuearticles values(HRTEM);. The catalytic activity of dendrimer nanocomposite insert ignore into journalissuearticles values(DNC); was assessed on the reduction of 4-nitrophenol insert ignore into journalissuearticles values(4-NP); to 4 aminophenol insert ignore into journalissuearticles values(4-AMP); in the presence of sodium borohydride insert ignore into journalissuearticles values(NaBH 4 ); as reducing agent by monitoring the conversion at λ 400 nm. The prepared Ag JCPDNCs displayed a good catalytic activity insert ignore into journalissuearticles values(K = 0.12 x 10 -2 s -1 ); for the model reduction reaction of 4-NP with the particle size distribution of 4.72 ± 0.81 nm, which offer a mixed type insert ignore into journalissuearticles values(interior and exterior); of DNC formation. The Ag JCPDNCs can be a valid complete alternative to their existing candidates in the literature with their different polymeric organics components and be great potential for the future studies as new materials.
Keywords : Poly amidoamine, Dendrimers PAMAMs, Dendrimer Nanocomposite DNC, Jeffamine, 4 nitrophenol, Kinetic