화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.39, No.11, 3138-3145, November, 2022
DOI10.1007/s11814-022-1168-2  Export Citation
Synthesis of polyethylenimine-modified magnetic hydrogel nanocomposite absorbents for heavy metals removal
Tao Wan1, 2, †, Songsong He2, Tairan Wang2, Jian Wang2, Mingrui Yu2, Yang Jia2, and Qi Tang2
  • 1State Key Lab of Geohazard Prevention & Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, Sichuan, China
  • 2Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, Chengdu University of Technology, Chengdu 610059, Sichuan, China
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Polyethylenimine(PEI)-modified magnetic hydrogel nanocomposite absorbents (PEI-mHNAs) were fabricated based on poly(acrylamide-co-acrylic acid) and PEI-modified magnetic nanoparticles by radical copolymerization. FTIR and XRD results preliminarily confirmed the target structure of PEI-mHNAs without destroying the structure of magnetic nanoparticles during modification and radical copolymerization. PEI-mHNAs with many rough porous and interstitial structure had high adsorption capacity of Cu(II) (217mg/g), Cd(II) (232mg/g) and Pb(II) (459mg/g). PEI-mHNAs had the best absorption capacity for heavy metal ions in the synthesis condition of acrylic acid/acrylamide mass ratio of 60 : 40, 0.8% initiator, AA neutralization degree of 70%, 0.75% crosslinker, and 15% PEImodified magnetic nanoparticles. Moreover, PEI-mHNAs had good magnetic responsiveness, high thermal stability and reusability, which make it a potential application in removing heavy metal ions from the contaminated wastewater.
Keywords:Polyethylenimine;Hydrogel;Nanocomposite;Absorbent;Heavy Metals
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