SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 52 ›› Issue (12): 136-145.DOI: 10.1016/j.cjche.2021.10.030

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Improvement of synergistic effect photocatalytic/peroxymonosulfate activation for degradation of amoxicillin using carbon dots anchored on rod-like CoFe2O4

Weilong Shi2,4, Yanan Liu1, Wei Sun1, Yuanzhi Hong1, Xiangyu Li1, Xue Lin1, Feng Guo3, Junyou Shi1   

  1. 1. School of Material Science and Engineering, Beihua University, Jilin 132013, China;
    2. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    3. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    4. College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
  • Received:2021-08-28 Revised:2021-10-19 Online:2023-01-31 Published:2022-12-28
  • Contact: Xue Lin,E-mail:jlsdlinxue@126.com;Feng Guo,E-mail:gfeng0105@126.com;Junyou Shi,E-mail:bhsjy64@163.com
  • Supported by:
    The authors would like to acknowledge the founding support from the National Natural Science Foundation of China (Nos. 21906072, 22006057 and 31971616), the Natural Science Foundation of Jiangsu Province (BK20190982), “Doctor of Mass Entrepreneurship and Innovation” Project in Jiangsu Province, Henan Postdoctoral Foundation (202003013), Doctoral Scientific Research Foundation of Jiangsu University of Science and Technology (China) (1062931806 and 1142931803), the Science and Technology Research Project of the Department of Education of Jilin Province (JJKH20200039KJ), the Science and Technology Research Project of Jilin City (20190104120, 201830811) and the Project of Jilin Provincial Science and Technology Development Plan (20190201277JC, 20200301046RQ, YDZJ202101ZYTS070).

Improvement of synergistic effect photocatalytic/peroxymonosulfate activation for degradation of amoxicillin using carbon dots anchored on rod-like CoFe2O4

Weilong Shi2,4, Yanan Liu1, Wei Sun1, Yuanzhi Hong1, Xiangyu Li1, Xue Lin1, Feng Guo3, Junyou Shi1   

  1. 1. School of Material Science and Engineering, Beihua University, Jilin 132013, China;
    2. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    3. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    4. College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
  • 通讯作者: Xue Lin,E-mail:jlsdlinxue@126.com;Feng Guo,E-mail:gfeng0105@126.com;Junyou Shi,E-mail:bhsjy64@163.com
  • 基金资助:
    The authors would like to acknowledge the founding support from the National Natural Science Foundation of China (Nos. 21906072, 22006057 and 31971616), the Natural Science Foundation of Jiangsu Province (BK20190982), “Doctor of Mass Entrepreneurship and Innovation” Project in Jiangsu Province, Henan Postdoctoral Foundation (202003013), Doctoral Scientific Research Foundation of Jiangsu University of Science and Technology (China) (1062931806 and 1142931803), the Science and Technology Research Project of the Department of Education of Jilin Province (JJKH20200039KJ), the Science and Technology Research Project of Jilin City (20190104120, 201830811) and the Project of Jilin Provincial Science and Technology Development Plan (20190201277JC, 20200301046RQ, YDZJ202101ZYTS070).

Abstract: β-lactam antibiotics in aquatic environment have severely damaged ecological stability and caused a series of environmental pollution problems to be solved urgently. Herein, a novel composite photocatalyst prepared by loading carbon dots (CDs) onto rod-like CoFe2O4 (CFO), which can effectively degrade amoxicillin (AMX) by photocatalytic/peroxymonosulfate (PMS) activation under visible light irradiation. The degradation results exhibits that the optimal degradation efficiency with 97.5% within 80 min is achievd by the CDs-CFO-5 composite. Such enhanced activity is ascribed to the introduction of CDs that effectively improves the separation efficiency of photogenerated electron pairs and creates new active sites as electron bridges that improve the photocatalytic performance. More importantly, a strong synergistic between CDs and photo-induced electrons generated from CFO can further activiate PMS to provide more SO4-· and ·OH radicals for boosting the degradation ability towards AMX. The present study aims to elucidate positive role of CDs in photocatalytic/peroxymonosulfate activation during the degradation reaction.

Key words: Carbon dots (CDs), CoFe2O4(CFO), Peroxymonosulfate (PMS), Photocatalytic, Amoxicillin (AMX)

摘要: β-lactam antibiotics in aquatic environment have severely damaged ecological stability and caused a series of environmental pollution problems to be solved urgently. Herein, a novel composite photocatalyst prepared by loading carbon dots (CDs) onto rod-like CoFe2O4 (CFO), which can effectively degrade amoxicillin (AMX) by photocatalytic/peroxymonosulfate (PMS) activation under visible light irradiation. The degradation results exhibits that the optimal degradation efficiency with 97.5% within 80 min is achievd by the CDs-CFO-5 composite. Such enhanced activity is ascribed to the introduction of CDs that effectively improves the separation efficiency of photogenerated electron pairs and creates new active sites as electron bridges that improve the photocatalytic performance. More importantly, a strong synergistic between CDs and photo-induced electrons generated from CFO can further activiate PMS to provide more SO4-· and ·OH radicals for boosting the degradation ability towards AMX. The present study aims to elucidate positive role of CDs in photocatalytic/peroxymonosulfate activation during the degradation reaction.

关键词: Carbon dots (CDs), CoFe2O4(CFO), Peroxymonosulfate (PMS), Photocatalytic, Amoxicillin (AMX)