Polyacrylamide-Phytic Acid-Polydopamine Conducting Porous Hydrogel for Efficient Removal of Water-Soluble Dyes

Abstract Removal of toxic dyes from wastewater has become a hot topic in both academic and industrial fields since there is growing concern about the threat of sewage to human health. Herein, we demonstrate that the three-dimensional porous polyacrylamide-phytic acid-polydopamine (termed as PAAM/PA/...

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Autores principales:	Zhen Zhao, Leijiao Li, Girma Selale Geleta, Lina Ma, Zhenxin Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c6a5304cbc20477ebf1c8787efa441f3
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spelling	oai:doaj.org-article:c6a5304cbc20477ebf1c8787efa441f32021-12-02T15:06:03ZPolyacrylamide-Phytic Acid-Polydopamine Conducting Porous Hydrogel for Efficient Removal of Water-Soluble Dyes10.1038/s41598-017-08220-62045-2322https://doaj.org/article/c6a5304cbc20477ebf1c8787efa441f32017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08220-6https://doaj.org/toc/2045-2322Abstract Removal of toxic dyes from wastewater has become a hot topic in both academic and industrial fields since there is growing concern about the threat of sewage to human health. Herein, we demonstrate that the three-dimensional porous polyacrylamide-phytic acid-polydopamine (termed as PAAM/PA/PDA) hydrogel can be served as reusable adsorbent with high efficiency for either anionic or cationic dyes. Using methyl blue (MB), methylene blue (YMB), methyl violet (MV) and neutral red (NR) as model dyes, we investigate the effect of pH, temperature, dye concentration, and PAAM/PA/PDA hydrogel mass on the adsorption. The experimental maximum adsorption capacities are more than 350.67 mg g−1 for four selected dyes. Adsorption kinetic and thermodynamic analysis suggests that the dyes are adsorbed on the PAAM/PA/PDA hydrogel through the strong π-π stacking and anion-cation interaction, and the adsorption process satisfies a pseudo-second-order model. Furthermore, the free-standing PAAM/PA/PDA hydrogel can be easily removed from water after adsorption process, and regenerated by adjusting solution pH values.Zhen ZhaoLeijiao LiGirma Selale GeletaLina MaZhenxin WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zhen Zhao Leijiao Li Girma Selale Geleta Lina Ma Zhenxin Wang Polyacrylamide-Phytic Acid-Polydopamine Conducting Porous Hydrogel for Efficient Removal of Water-Soluble Dyes
description	Abstract Removal of toxic dyes from wastewater has become a hot topic in both academic and industrial fields since there is growing concern about the threat of sewage to human health. Herein, we demonstrate that the three-dimensional porous polyacrylamide-phytic acid-polydopamine (termed as PAAM/PA/PDA) hydrogel can be served as reusable adsorbent with high efficiency for either anionic or cationic dyes. Using methyl blue (MB), methylene blue (YMB), methyl violet (MV) and neutral red (NR) as model dyes, we investigate the effect of pH, temperature, dye concentration, and PAAM/PA/PDA hydrogel mass on the adsorption. The experimental maximum adsorption capacities are more than 350.67 mg g−1 for four selected dyes. Adsorption kinetic and thermodynamic analysis suggests that the dyes are adsorbed on the PAAM/PA/PDA hydrogel through the strong π-π stacking and anion-cation interaction, and the adsorption process satisfies a pseudo-second-order model. Furthermore, the free-standing PAAM/PA/PDA hydrogel can be easily removed from water after adsorption process, and regenerated by adjusting solution pH values.
format	article
author	Zhen Zhao Leijiao Li Girma Selale Geleta Lina Ma Zhenxin Wang
author_facet	Zhen Zhao Leijiao Li Girma Selale Geleta Lina Ma Zhenxin Wang
author_sort	Zhen Zhao
title	Polyacrylamide-Phytic Acid-Polydopamine Conducting Porous Hydrogel for Efficient Removal of Water-Soluble Dyes
title_short	Polyacrylamide-Phytic Acid-Polydopamine Conducting Porous Hydrogel for Efficient Removal of Water-Soluble Dyes
title_full	Polyacrylamide-Phytic Acid-Polydopamine Conducting Porous Hydrogel for Efficient Removal of Water-Soluble Dyes
title_fullStr	Polyacrylamide-Phytic Acid-Polydopamine Conducting Porous Hydrogel for Efficient Removal of Water-Soluble Dyes
title_full_unstemmed	Polyacrylamide-Phytic Acid-Polydopamine Conducting Porous Hydrogel for Efficient Removal of Water-Soluble Dyes
title_sort	polyacrylamide-phytic acid-polydopamine conducting porous hydrogel for efficient removal of water-soluble dyes
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/c6a5304cbc20477ebf1c8787efa441f3
work_keys_str_mv	AT zhenzhao polyacrylamidephyticacidpolydopamineconductingporoushydrogelforefficientremovalofwatersolubledyes AT leijiaoli polyacrylamidephyticacidpolydopamineconductingporoushydrogelforefficientremovalofwatersolubledyes AT girmaselalegeleta polyacrylamidephyticacidpolydopamineconductingporoushydrogelforefficientremovalofwatersolubledyes AT linama polyacrylamidephyticacidpolydopamineconductingporoushydrogelforefficientremovalofwatersolubledyes AT zhenxinwang polyacrylamidephyticacidpolydopamineconductingporoushydrogelforefficientremovalofwatersolubledyes
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Polyacrylamide-Phytic Acid-Polydopamine Conducting Porous Hydrogel for Efficient Removal of Water-Soluble Dyes

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