Green and eco-friendly route for the synthesis of Ag@Vitamin B9-LDH hybrid and its chitosan nanocomposites: Characterization and antibacterial activity. (10th October 2018)

• Record Type: Journal Article
• Authors: Mallakpour, Shadpour; Hatami, Masoud
• Is Part Of: Polymer. Volume 154(2018)
• Page Start: 188
• Page End: 199
• Publication Date: 2018-10-10
• Subjects: Layered double hydroxide -- Ag nanoparticle -- Environmentally-friendly -- Nanocomposite -- Antibacterial activity; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2018.08.077
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: Firstly, Ag nanoparticle (Ag-NP) was synthesised with environmentally-friendly and green media extracted from Rosmarinus officinalis plants. The structure of Ag-NP was confirmed with the absorption peak related to the Surface Plasmon Resonance at 432 nm through UV–Vis analysis. Subsequence, Ag-NP was composited with pre-synthesised vitamin B9 (VB9) intercalated Layered Double Hydroxide (VB9-LDH) and Ag@VB9-LDH with different percentages was incorporated in the chitosan (CS) as bio-polymeric matrix. The improvement in the physio-chemical properties of prepared nanocomposites (NCs) was confirmed with different spectroscopic techniques. Finally, the effect of polymeric matrix on the antibacterial activity of this compound was examined against two Gram-negative and Gram-positive bacteria. The results of antibacterial test showed the remarkable antibacterial activity for all samples against both bacteria and NC 6 wt% showed greater inhibition zone diameter (19 mm and 11 mm) in compared to the pristine Ag@VB9-LDH (11 mm and 8 mm) for Gram-negative and Gram-positive, respectively. Highlights: Intercalation of LDH samples with biologic and organic Vitamin B9 molecule. Bio-friendly and low-cost synthesis of Ag-NP through R. officinalis extracted media. Increasing in the char parameter of CS NCs with Ag@VB9-LDH samples. Antibacterial activity of samples against bath E. Coli and S. Aureus bacteria. Increasing in the inhibition zone diameter to 19 mm for CS/Ag@VB9-LDH NC.