首页|Utilizing synergistic effects of bifunctional polymer hydrogel PAM-PAMPS for selective capture of Pb(II)from wastewater

Utilizing synergistic effects of bifunctional polymer hydrogel PAM-PAMPS for selective capture of Pb(II)from wastewater

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The preparation of hydrogel adsorbents with admirable performance for efficient selective remove Pb(Ⅱ)in complex wastewater still remains a great challenge.Herein,a novel bifunctional modified polymer hydrogel PAM-PAMPS was prepared by crosslinking acrylamide(AM)and 2-acrylamido-2-methylpropanesulfonic acid(AMPS).Compared with PEG,PAA and PAMPS,PAM-PAMPS exhibited both the maximum adsorption capacity of Pb(Ⅱ)(541.90mg/g)and satisfactory selectivity for Pb(Ⅱ)in mul-tiple heavy metal ions coexistence solutions.Various characterizations indicated that-SO3H and-NH2 as active sites on PAM-PAMPS occur the synergistic effects of ion-exchange and coordination with Pb(Ⅱ)during the adsorption process,respectively.The adsorption energy Ead(PAM-PAMPS)obtained from density functional theory(DFT)calculations was lower than the other three hydrogels,manifesting that PAM-PAMPS formed the most stable complex with Pb(Ⅱ),which further demonstrated that Pb(Ⅱ)preferred to combine with PAM-PAMPS to selective capture of Pb(Ⅱ).The practice utilization of PAM-PAMPS was as-sessed by wastewater of electroplate containing Pb(Ⅱ).Meanwhile,the removal ratio of PAM-PAMPS was maintained at about 89％ after 4 adsorption-desorption cycles.This study establishes a new and effective idea for the design and fabrication of bifunctionalized modified polymer hydrogels.

Synergistic effectsBifunctionalPolymer hydrogelSelective capturePb(Ⅱ)

Xin Li、Xuan Ding、Junkun Zhou、Hui Shi、Zhenxi Dai、Jiayi Liu、Yongcun Ma、Penghui Shao、Liming Yang、Xubiao Luo

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Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle,Nanchang Hangkong University,Nanchang 330063,China

School of Life Science,Jinggangshan University,Ji'an 343009,China

National science Fund for Distinguished Young ScholarsNational Science Foundation of ChinaNational Key Research and Development Program of ChinaNational Science Foundation of Jiangxi Province

52125002521000432019YFC190790020224BAB203048

2024

10.1016/j.cclet.2023.109158

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(7)