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Catalytic degradation of azo dyes by bimetallic nanoparticles loaded in smart polymer microgels

The contamination of water by azo dyes is increasing rapidly due to their waste use in textile industries. These dyes are very toxic for living things. Therefore, it is very important to remove these dyes from water. Various materials are reported for this purpose. Here, the most effective system of...

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Autor principal: Arif, Muhammad
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9850705/
https://www.ncbi.nlm.nih.gov/pubmed/36756456
http://dx.doi.org/10.1039/d2ra07932a
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author Arif, Muhammad
author_facet Arif, Muhammad
author_sort Arif, Muhammad
collection PubMed
description The contamination of water by azo dyes is increasing rapidly due to their waste use in textile industries. These dyes are very toxic for living things. Therefore, it is very important to remove these dyes from water. Various materials are reported for this purpose. Here, the most effective system of bimetallic nanoparticles in smart polymer microgels was prepared. The microgel system of N-isopropylmethacrylamide (NMA) (monomer) and methacrylic acid (MAa) (comonomer) was synthesized by a free radical precipitation polymerization method and then bimetallic (Ag/Ni) nanoparticles were encapsulated into the P(NMA-MAa) microgels by in situ reduction of both silver and nickel salts by NaBH(4) (reductant) after insertion of both (Ag(+)/Ni(2+)) ions. The P(NMA-MAa) microgels and Ag/Ni-P(NMA-MAa) hybrid microgels were characterized with FTIR, UV-vis, TGA, XRD, DLS, EDX, and STEM. The pH and temperature responsive behavior of Ag/Ni-P(NMA-MAa) was also evaluated. The catalytic efficiency of Ag/Ni-P(NMA-MAa) was assessed for degradation of methyl orange (MOr), congo red (CRe), eriochrome black T (EBlT) and methyl red (MRe) dyes under various conditions in aqueous medium. The apparent rate constant (k(0)) value for MOr, CRe, EBlT and MRe was found to be 0.925 min(−1), 0.486 min(−1), 0.540 min(−1) and 0.525 min(−1) respectively. The Ag/Ni-P(NMA-MAa) was found to be an excellent recyclable catalyst.
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spelling pubmed-98507052023-02-07 Catalytic degradation of azo dyes by bimetallic nanoparticles loaded in smart polymer microgels Arif, Muhammad RSC Adv Chemistry The contamination of water by azo dyes is increasing rapidly due to their waste use in textile industries. These dyes are very toxic for living things. Therefore, it is very important to remove these dyes from water. Various materials are reported for this purpose. Here, the most effective system of bimetallic nanoparticles in smart polymer microgels was prepared. The microgel system of N-isopropylmethacrylamide (NMA) (monomer) and methacrylic acid (MAa) (comonomer) was synthesized by a free radical precipitation polymerization method and then bimetallic (Ag/Ni) nanoparticles were encapsulated into the P(NMA-MAa) microgels by in situ reduction of both silver and nickel salts by NaBH(4) (reductant) after insertion of both (Ag(+)/Ni(2+)) ions. The P(NMA-MAa) microgels and Ag/Ni-P(NMA-MAa) hybrid microgels were characterized with FTIR, UV-vis, TGA, XRD, DLS, EDX, and STEM. The pH and temperature responsive behavior of Ag/Ni-P(NMA-MAa) was also evaluated. The catalytic efficiency of Ag/Ni-P(NMA-MAa) was assessed for degradation of methyl orange (MOr), congo red (CRe), eriochrome black T (EBlT) and methyl red (MRe) dyes under various conditions in aqueous medium. The apparent rate constant (k(0)) value for MOr, CRe, EBlT and MRe was found to be 0.925 min(−1), 0.486 min(−1), 0.540 min(−1) and 0.525 min(−1) respectively. The Ag/Ni-P(NMA-MAa) was found to be an excellent recyclable catalyst. The Royal Society of Chemistry 2023-01-19 /pmc/articles/PMC9850705/ /pubmed/36756456 http://dx.doi.org/10.1039/d2ra07932a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Arif, Muhammad
Catalytic degradation of azo dyes by bimetallic nanoparticles loaded in smart polymer microgels
title Catalytic degradation of azo dyes by bimetallic nanoparticles loaded in smart polymer microgels
title_full Catalytic degradation of azo dyes by bimetallic nanoparticles loaded in smart polymer microgels
title_fullStr Catalytic degradation of azo dyes by bimetallic nanoparticles loaded in smart polymer microgels
title_full_unstemmed Catalytic degradation of azo dyes by bimetallic nanoparticles loaded in smart polymer microgels
title_short Catalytic degradation of azo dyes by bimetallic nanoparticles loaded in smart polymer microgels
title_sort catalytic degradation of azo dyes by bimetallic nanoparticles loaded in smart polymer microgels
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9850705/
https://www.ncbi.nlm.nih.gov/pubmed/36756456
http://dx.doi.org/10.1039/d2ra07932a
work_keys_str_mv AT arifmuhammad catalyticdegradationofazodyesbybimetallicnanoparticlesloadedinsmartpolymermicrogels