alexa An approach toward construction of tuned chitosan polyaniline metal hybrid nanocomposites for treatment of meat industry wastewater
Chemical Engineering

Chemical Engineering

Journal of Analytical & Bioanalytical Techniques

Author(s): Tahia B Mostafa, Atef S Darwish

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Approaches applied to synthesize novel hybrid nanocomposites based on immobilizing copper and silver over (polyaniline-grafted amino-modified chitosan). Hybrid nanocomposites were characterized by FTIR, XRD, SEM and HR-TEM techniques. Results revealed that the nature of chitosan amino-modifiers strongly dominated polyaniline structure and metallo-size/shape. The aromatic modifier enforced chitosan surface to incurve allowed grafting of fully oxidized polyaniline above which copper dots and silver nanocubes were immobilized. The aliphatic modifier flattened and cracked chitosan surface permit grafting of partially oxidized polyaniline over which copper nanorodes and hexagonal silver nanoparticles were immobilized. Fortunately, hybrid nanocomposites exhibited excellent environmental impact during meat industrial wastewater treatment. Activity studies showed that metal nanoparticles immobilized onto (polyaniline-grafted aromatic amino-modified chitosan) displayed superior degrading action for bovine albumin due to the offensive attack of active oxygen species, generated from MNPs-H2O2 interactions, upon BSA skeletal chains yielding 100% tryptophane loss with production of 1.0 mg L1 tyrosine and 1200% increment in phenyl residues. Also, the nanosized metal particles immobilized onto (polyaniline-grafted aliphatic amino-modified chitosan) possessed 100% anti-bacterial activity against Bacillus subtilis and Escherichia coli because of the metallo-well exposable attitude beyond polyaniline-grafted modified chitosan interfaces.

This article was published in Chemical Engineering Journal and referenced in Journal of Analytical & Bioanalytical Techniques

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