Chinese Journal of Catalysis ›› 2022, Vol. 43 ›› Issue (4): 1111-1122.DOI: 10.1016/S1872-2067(21)63930-X

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Hydrochloric acid-mediated synthesis of ZnFe2O4 small particle decorated one-dimensional Perylene Diimide S-scheme heterojunction with excellent photocatalytic ability

Yangrui Xua, Xiaodie Zhua, Huan Yana, Panpan Wanga, Minshan Songb, Changchang Mac, Ziran Cheng, Jinyu Chua, Xinlin Liud,e,*(), Ziyang Lua,f,h,*()   

  1. aInstitute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
    bSchool of Science, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China
    cDepartment of Chemistry, Dongguk University, Seoul 04620, South Korea
    dSchool of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
    eDepartment of Mechanical & Materials Engineering, Portland State University, Portland, OR, USA
    fDepartment of Chemistry, University of Tennessee, Tennessee, Knoxville 37996, USA
    gDepartment of Architecture and Environment Engineering, Sichuan Vocational and Technical College, Suining 629000, Sichuan, China
    hJiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
  • Received:2021-07-18 Accepted:2021-07-18 Online:2022-03-05 Published:2022-03-01
  • Contact: Xinlin Liu, Ziyang Lu
  • Supported by:
    National Natural Science Foundation of China(21908080);Natural Science Foundation of Jiangsu Province(BK20180884);Zhenjiang Key Research & Development Project(SH2018021);Jiangsu Government Scholarship for Overseas Studies(JS-2018-243);Jiangsu Government Scholarship for Overseas Studies(JS-2018-241);Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment

Abstract:

The recyclable and stable ZnFe2O4 small particle decorated one-dimensional perylene diimide (PDI) S-scheme heterojunction (1D PDI/ZnFe2O4) is prepared by the hydrochloric acid-mediated (HCl-mediated) strategy, interestingly, the morphology of the 1D PDI/ZnFe2O4 can also be effectively regulated by HCl-mediated process, the existence of HCl can regulate PDI into a uniform rod structure, while the co-existence of HCl and PDI can limit ZnFe2O4 to become the uniform small particles. More importantly, based on the 1D rod structure of PDI and the small size effect of ZnFe2O4, carriers can migrate to the surface more easily, which can improve the photocatalytic activity. Meanwhile, due to the appropriate energy level structure, the S-scheme heterojunction structure is formed between PDI and ZnFe2O4, which eliminates meaningless photo-generated charge carriers through recombination and introduces strong redox to further enhance the photodegradation effect, thereby, 1D PDI/ZnFe2O4 exhibits excellent photocatalytic ability, under the visible light irradiation, the degradation rate of tetracycline (TC) with 1D PDI/ZnFe2O4 (66.67%) is 9.18 times that with PDI (7.26%) and 9.73 times that with ZnFe2O4 (6.85%). This work proposes new ideas for the assembly of magnetic organic-inorganic S-scheme heterojunction photocatalysts.

Key words: Hydrochloric acid-mediated strategy, Morphology regulation, Perylene diimide/ZnFe2O4, S-scheme heterojunction, Photocatalytic ability