SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2022, Vol. 49 ›› Issue (9): 213-223.DOI: 10.1016/j.cjche.2021.11.026

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Highly efficient visible/near-infrared light photocatalytic degradation of antibiotic wastewater over 3D yolk-shell ZnFe2O4 supported 0D carbon dots with up-conversion property

Weilong Shi1,3, Jie Gao2, Haoran Sun3, Zhongyi Liu1, Feng Guo3, Lijing Wang1,4   

  1. 1. College of Chemistry, Zhengzhou University, Zhengzhou 450001, China;
    2. School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China;
    3. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    4. Henan Engineering Center of New Energy Battery Materials, Henan D&A Engineering Center of Advanced Battery Materials, College of Chemistry and Chemical Engineering, Institute of Architectural Engineering, Shangqiu Normal University, Shangqiu 476000, China
  • 收稿日期:2021-08-28 修回日期:2021-10-19 发布日期:2022-10-19
  • 通讯作者: Zhongyi Liu,E-mail:liuzhongyi@zzu.edu.cn;Feng Guo,E-mail:gfeng0105@126.com;Lijing Wang,E-mail:wanglijing1989@126.com
  • 基金资助:
    The authors would like to acknowledge the founding support from the National Natural Science Foundation of China (21906072 and 22006057), the Natural Science Foundation of Jiangsu Province (BK20190982), Henan Postdoctoral Foundation (202003013), "Doctor of Mass Entrepreneurship and Innovation" Project in Jiangsu Province, the Natural Science Basic Research Plan in Shaanxi Province of China (2021JM-047), Science and Technology Research Project of Henan Province (202102210055), and General project of Chinese postdoctoral program (2020M672263).

Highly efficient visible/near-infrared light photocatalytic degradation of antibiotic wastewater over 3D yolk-shell ZnFe2O4 supported 0D carbon dots with up-conversion property

Weilong Shi1,3, Jie Gao2, Haoran Sun3, Zhongyi Liu1, Feng Guo3, Lijing Wang1,4   

  1. 1. College of Chemistry, Zhengzhou University, Zhengzhou 450001, China;
    2. School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China;
    3. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    4. Henan Engineering Center of New Energy Battery Materials, Henan D&A Engineering Center of Advanced Battery Materials, College of Chemistry and Chemical Engineering, Institute of Architectural Engineering, Shangqiu Normal University, Shangqiu 476000, China
  • Received:2021-08-28 Revised:2021-10-19 Published:2022-10-19
  • Contact: Zhongyi Liu,E-mail:liuzhongyi@zzu.edu.cn;Feng Guo,E-mail:gfeng0105@126.com;Lijing Wang,E-mail:wanglijing1989@126.com
  • Supported by:
    The authors would like to acknowledge the founding support from the National Natural Science Foundation of China (21906072 and 22006057), the Natural Science Foundation of Jiangsu Province (BK20190982), Henan Postdoctoral Foundation (202003013), "Doctor of Mass Entrepreneurship and Innovation" Project in Jiangsu Province, the Natural Science Basic Research Plan in Shaanxi Province of China (2021JM-047), Science and Technology Research Project of Henan Province (202102210055), and General project of Chinese postdoctoral program (2020M672263).

摘要: The development of effective visible and near-infrared photocatalysts is highly promising in the current field of photocatalysis. Herein, carbon dots/ZnFe2O4 (CDs/ZFO) with coating zero dimensional (0D) CDs on the surface of three dimensional (3D) yolk-shell ZFO spheres was designed and synthesized via a self-templated solvothermal method. The as-prepared CDs/ZFO composites displayed outstanding visible and near-infrared photocatalytic degradation activity of tetracycline (TC), and the optimal 3% CDs/ZFO sample with loading 3% (mass) CDs displayed the highest photocatalytic TC degradation ability under visible light (79.5% within 120 min) and near-infrared light (41% within 120 min). The enhancement of photocatalytic activity for CDs/ZFO composite is mainly ascribed to the fact that 0D/3D yolk-shell CDs/ZFO structure not only effectively reflect the incident light to increase the utilization efficiency of solar light, but also utilize the up-conversion photoluminescence and electronic conductivity properties of CDs to broaden sunlight absorption range and promote separation and transfer of electron-hole pairs.

关键词: Carbon dots, ZnFe2O4, York-shell, Near-infrared, Photocatalytic

Abstract: The development of effective visible and near-infrared photocatalysts is highly promising in the current field of photocatalysis. Herein, carbon dots/ZnFe2O4 (CDs/ZFO) with coating zero dimensional (0D) CDs on the surface of three dimensional (3D) yolk-shell ZFO spheres was designed and synthesized via a self-templated solvothermal method. The as-prepared CDs/ZFO composites displayed outstanding visible and near-infrared photocatalytic degradation activity of tetracycline (TC), and the optimal 3% CDs/ZFO sample with loading 3% (mass) CDs displayed the highest photocatalytic TC degradation ability under visible light (79.5% within 120 min) and near-infrared light (41% within 120 min). The enhancement of photocatalytic activity for CDs/ZFO composite is mainly ascribed to the fact that 0D/3D yolk-shell CDs/ZFO structure not only effectively reflect the incident light to increase the utilization efficiency of solar light, but also utilize the up-conversion photoluminescence and electronic conductivity properties of CDs to broaden sunlight absorption range and promote separation and transfer of electron-hole pairs.

Key words: Carbon dots, ZnFe2O4, York-shell, Near-infrared, Photocatalytic