自愈水凝胶
普鲁兰
盐酸四环素
降级(电信)
催化作用
化学工程
化学
磁性纳米粒子
核化学
废水
材料科学
纳米颗粒
四环素
有机化学
废物管理
多糖
抗生素
生物化学
计算机科学
工程类
电信
作者
Siyao Cheng,Cheng Zhang,Junjian Li,Xin Pan,Xinrang Zhai,Yingzhi Jiao,Yan Li,Wei Dong,Xiaoliang Qi
标识
DOI:10.1016/j.carbpol.2021.117951
摘要
Magnetic nanoparticles that can be employed as Fenton-like catalysts Fenton-like catalysts are attractive materials for degrading antibiotics. In this study, we facilely prepared novel magnetic pullulan (MP) hydrogels by doping modified magnetic nanoparticles into pullulan matrices, which could enhance catalytic degradation performance and strengthen the stability of resulting hydrogels. This is the first time that MP hydrogels have been fabricated successfully and used as Fenton-like catalysts for tetracycline hydrochloride (TCH) degradation. MP hydrogels were characterized and their catalytic TCH degradation abilities were also investigated. The optimized conditions (pH value, Fe3O4 content, H2O2 content and TCH concentration) for TCH degradation were investigated. The optimized system showed excellent degradation efficiency for TCH. Further, the degradation mechanism was comprehensively studied. Finally, synthesized MP hydrogels showed impressive reusability and stability in the cycle experiment. Thus, our findings would open new possibilities to develop magnetic hydrogels in eliminating antibiotic contaminants.
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