Chemical Research in Chinese Universities ›› 2022, Vol. 38 ›› Issue (6): 1349-1355.doi: 10.1007/s40242-022-2255-y

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High-performance Removal of Tetracycline Enabled by Fe0 Nanoparticles Supported on Carbon@ZIF-8

XIAO Meng1, QI Wenqian1, JIA Shuanghui2, PANG Mengting2, SHI Fengcheng3, MAO Hui1   

  1. 1. College of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China;
    2. College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, P. R. China;
    3. Key Laboratory for Harmful Components and Tar Reduction in Cigarette of Sichuan Province, China Tobacco Sichuan Industrial Co., Ltd., Chengdu 610066, P. R. China
  • Received:2022-07-28 Online:2022-12-01 Published:2022-12-06
  • Contact: MAO Hui, SHI Fengcheng E-mail:rejoice222@163.com;452898448@qq.com
  • Supported by:
    This work was supported by the National Key R&D Program of China(No. 2021YFC2103800) and the Technical Development Project of Sichuan University, China(No.2020HB09).

Abstract: Significant concerns have been raised over the removal of antibiotics, such as tetracyclines(TC) in aquatic environments. Herein, we synthesized a new type of heterogeneous catalyst by supporting Fe0 nanopartciles(FeNPs) onto carbon coated ZIF-8 (C@ZIF-8). The carbon layer formed by glucose was beneficial to maintain the morphology and porous structure of ZIF-8, which can also appropriately improve the hydrophobicity of ZIF-8 for enriching the TC. The as-prepared FeNPs-C@ZIF-8 catalyst featured an extreme large specific surface area(1122.16 m2/g), and the supported FeNPs with an average diameter of 6.13 nm exhibited a high dispersity on the supporting matrix of C@ZIF-8. For the removal of tetracycline, the large specific surface area of FeNPs-C@ZIF-8 allowed for an easy access of tetracycline to the FeNPs, while the highly dispersed FeNPs served as actived sites for the efficient degradation of tetracycline. A synergistic effect between adsorption and catalytic degradation of FeNPs(5%, mass fraction)-C@ZIF-8 was proven to be responsible for the high-performance removal of tetracycline with the removal efficiency high up to 93.02% at pH 5, 25℃. The FeNPs-C@ZIF-8 was capable of recycling after activation with supplementary Fe0, which still maintained a high removal efficiency of 75.52% in the 5th cycle within 20 min.

Key words: Fe0 nanoparticle, Carbon coated ZIF-8, Adsorption removal, Catalytic degradation, Tetracycline removal