Title of article
Synthesis and Characterization of Silver and Gold Nano-Structures on Chitosan-Porous Anodic Alumina Nano-Composite
Author/Authors
Qayyum, Somia Department of Chemistry - Mirpur University of Science and Technology (MUST), Mirpur, AJ&K-10250, PAKISTAN , Mehmood, Mazhar Department of Metallurgy and Materials Engineering - Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, PAKISTAN , Mirza, Muhammad A Department of Chemistry - Mirpur University of Science and Technology (MUST), Mirpur, PAKISTAN , Ashraf, Sumaira Department of Metallurgy and Materials Engineering - Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, PAKISTAN , Ahmed, Zahoor Department of Chemistry - Mirpur University of Science and Technology (MUST), Mirpur, AJ&K-10250, PAKISTAN , Tanvir, Tauseef Department of Metallurgy and Materials Engineering - Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, PAKISTAN , Choudhary, Muhammad A Department of Chemistry - Mirpur University of Science and Technology (MUST), Mirpur, PAKISTAN , Iqbal, Massod Department of Chemistry - Mirpur University of Science and Technology (MUST), Mirpur, PAKISTAN , Nisar, Faria Department of Chemistry - Mirpur University of Science and Technology (MUST), Mirpur, PAKISTAN , Nisa, Zaib un Department of Chemistry - Mirpur University of Science and Technology (MUST), Mirpur, PAKISTAN
Pages
14
From page
31
To page
44
Abstract
This study was designed to probe the fabrication of unique silver and gold nano-structures engaging a self-designed chitosan-porous anodic alumina nano-composite as template. Porous anodic alumina have been manufactured by di-step aluminum anodization in oxalic acid electrolytic bath. The surface properties of porous anodic alumina were reinforced by chitosan neutralized in sodium hydroxide. Multifarious nano-morphologies of silver as well as gold nano-structures were observed. Furthermore, the long chitosan biopolymer chains were degraded by γ-irradiations and the same procedure was employed for modification of porous anodic alumina with γ-degraded chitosan. The morphologies of fabricated silver and gold nano-structures were investigated by scanning electron microscopy, while their composition was evaluated with the help of energy dispersive X-ray spectroscopy. X-ray diffraction study exposed face centered cubic phase for both silver and gold nano-structures. Reflection mode UV-Vis spectroscopy was used to ascertain reflection grooves in the absorption range of silver and gold nano-structures respectively. The technique does not involve any harmful reagent and show different selectivity than methods in general practice. The achieved results apprised that the fabricated nano-structures offer the advantages of biocompatibility and eco-friendliness for numerous biomedical uses.
Keywords
Gold and silver nano-structures , Nano-composite , Chitosan , Di-step aluminum anodization , Porous anodic alumina
Serial Year
2019
Record number
2495921
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