Catalytic Reduction of Toxic Dyes Using Highly Responsive and Stable Ag Nanocomposite
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Catalytic Reduction of Toxic Dyes Using Highly Responsive and Stable Ag Nanocomposite Manal F. Abou Taleb1,2 · Faten Ismail Abou El Fadl2 · Hanan A. Albalwi1 Received: 14 August 2020 / Revised: 9 October 2020 / Accepted: 14 October 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The objective of study is preparing multi-responsive, nontoxic, and highly stable nanocomposite hydrogels for effective reduction and decolonization of broad spectrum of toxic dyes. The nanocomposite hydrogels are composed of N-isopropy acrylamide, acrylic acid, and silver/chitosan nano-dispersion and prepared by the effect of Gamma radiation at a dose rate of 2.6 kGy/h. The physical and chemical properties of the various prepared nanocomposites hydrogels were studied by various techniques as SEM, TEM, XRD, and FTIR. The swelling properties of the nanocomposites hydrogels were studied under various conditions as pH and temperature. Given the physical properties of multifunctional thermo-responsive N-isopropy acrylamide, acrylic acid hydrogel, and its Ag nanocomposite, they hold the strong potential for toxic dyes degradation as Erioglaucine as a model dye. In this paper, we review various silver and thermo-responsive poly (N- isopropylacrylamide/ Acrylicacid /silver), (PNIPAM/AA/Ag) nanocomposites and highlight their high activity as a catalyst for degradation of various types of dyes. Keywords N-Iosopropyl acrylamide · Acrylic acid · Silver nanoparticles · Catalytic reduction · Gamma radiation
1 Introduction Toxic dyes one of the dangerous pollutants in the Industrial effluents. As there are many types of dyes varies in chemical structure, stability, consequently, and toxicity, they became a fatal problem that affects the ecosystem. The effluent generated from the textile industry is the main source of pollutant dyes in industry which are heavily colored, containing high concentrations of salts, and exhibiting high biological oxygen demand/chemical oxygen demand values [1]. Thus, it is necessary to treat the dye-containing wastewater before being released it to the environment. Researchers have done many efforts to remove toxic dyes from wastewater by using different techniques such as precipitation, nano-filtration, * Manal F. Abou Taleb [email protected] 1
Department of Chemistry, College of Science and Humanities in Al‑Kharj, Prince Sattam Bin Abdulaziz University, Al‑kharj 11942, Saudi Arabia
Polymer Chemistry Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority, Nasr City, P.O. Box 7551, Cairo 11762, Egypt
2
electro-sorption, adsorption, coagulation, flocculation, ion exchange, membrane separation, and filtration [1]. Catalysis is a distinctive technology for decolonization and degradation of organic contaminants. This process can decay organic dyes completely to H2O, CO2, and other nontoxic inorganic compounds without causing a secondary pollution [2, 3]. Currently, the removal process of dyes based on catalytic degradation,
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