- Journal of the Turkish Chemical Society Section A: Chemistry
- Vol: 5 Issue: 2
- Synthesis and Characterization of Jeffamine Core PAMAM Dendrimer-Silver Nanocomposites (Ag JCPDNCs) ...
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 : 8 | Download : 1
Publication Date : 2018-01-01
Article Type : Research
Abstract :This paper presents the synthesis, characterization and catalytic evaluation of Jeffamine core PAMAM dendrimer-silver nanocomposites (Ag JCPDNCs). Generation-4 Jeffamine core PAMAM dendrimer (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 (UV-Vis) spectroscopy and high resolution transmission electron microscopy (HRTEM). The catalytic activity of dendrimer nanocomposite (DNC) was assessed on the reduction of 4-nitrophenol (4-NP) to 4 aminophenol (4-AMP) in the presence of sodium borohydride (NaBH 4 ) as reducing agent by monitoring the conversion at λ 400 nm. The prepared Ag JCPDNCs displayed a good catalytic activity (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 (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