TY - JOUR ID - 159680 TI - Adsorption of cationic dye from aqueous solutions by green pH responsive hydrogels based on poly(2-acrylamido-2-methyl-1-propanesulfonic acid) JO - Nanochemistry Research JA - NCR LA - en SN - 2538-4279 AU - Muhammadi, Hamidreza AU - Ghorbanloo, Massomeh AU - Masami, Mori AU - Yahiro, Hidenori AD - Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, Iran. AD - Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, Matsuyama, Japan. Y1 - 2022 PY - 2022 VL - 7 IS - 2 SP - 107 EP - 121 KW - pH responsive KW - 1-Vinylimidazole, 2-Acrylamido-2-methyl-1-propane sulfonic acid KW - Rhodamine B adsorption KW - Quaternization DO - 10.22036/ncr.2022.02.006 N2 - Poly(2-acrylamido-2-methyl-1-propanesulfonic acid-co-1-vinylimidazole), hydrogels were synthesized via free radical polymerization reaction at different conditions and modified with di-alkyl halide. P(AMPS-Na+-co-VIm)-Ag and p(AMPS-H+-co-VIm)-Ag were prepared by reducing Ag(CH3COO) salts loaded into p(AMPS-Na+-co-VIm) and p(AMPS-H+-co-VIm) hydrogels and then reduced by NaBH4. Metal nanoparticles embedded p(AMPS-Na+-co-VIm)-Ag and p(AMPS-H+-co-VIm)-Ag were visualized by high resolution X-ray photoelectron spectroscopy (HRXPS) and transmission electron microscopy (TEM). The prepared porous hydrogels and related composites were utilized in the adsorption of Rhodamine B from aqueous solutions. Among non-quaternized hydrogels, p(AMPS-Na+-co-VIm) and its composite outperformed p(AMPS-H+-co-VIm) and p(AMPS-H+-co-VIm)-Ag. since high porosity increases absorption capacity, which depends on the size and shape of the pores. In addition, the effect of 1,4-dibromobutane quaternization on the catalytic performance of nano-composites was investigated. Finally, the catalyst was easily recovered from the reaction medium and re-used for a further four runs without significant loss of activity. The durability of the catalyst structure without leaching was confirmed by FT-IR spectra and atomic absorption spectroscopy, respectively. UR - http://www.nanochemres.org/article_159680.html L1 - http://www.nanochemres.org/article_159680_4375a13bfdbd60d1676a59de305b59fd.pdf ER -