Chemical Research in Chinese Universities ›› 2025, Vol. 41 ›› Issue (4): 741-750.doi: 10.1007/s40242-025-5021-0

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Hydrothermal Synthesis of Inorganic Imprinted Bi4Ti3O12 Nanosheets for Efficient Selective Photocatalytic Degradation of Ciprofloxacin

WANG Yufan1, ZHOU Guosheng2, XU Yangrui1, CHENG Yu1, SONG Minshan3, JIN Jie1, LIU Xinlin4, LU Ziyang1,5   

  1. 1. School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, P. R. China;
    2. Zhejiang Key Laboratory for Island Green Energy and New Materials, Taizhou University, Taizhou 318000, P. R. China;
    3. School of Management, Jiangsu University, Zhenjiang 212013, P. R. China;
    4. School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, P. R. China;
    5. Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, P. R. China
  • Received:2025-02-08 Accepted:2025-03-19 Online:2025-08-01 Published:2025-07-24
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No. 22278190), the Qing Lan Project of Jiangsu Province, China (No. 2023), the Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Zhenjiang Carbon Emissions Peak/Carbon Neutrality Science and Technology Innovation Special Fund Project, China (No. CQ2022009), the Project of Research on Educational Reform and Talent Development of School of Emergency Management of Jiangsu University, China (No. JG-03-11), and the Special Scientific Research Project of School of Emergency Management of Jiangsu University, China (No. KY-C-12).

Abstract: Bismuth titanate shows great potential in the treatment of pollutants due to its good photocatalytic activity and stability. However, the non-selective degradation ability limits its application in pollutant treatment. Here, flake inorganic imprinted bismuth titanate (FII-BTO) with nanosheet structure was prepared by combining the inorganic imprinting technique with hydrothermal method. The formation of specific imprinting cavities on the surface of FII-BTO catalyst could specifically recognize and adsorb ciprofloxacin (CIP), and effectively improved the photoresponse and charge separation efficiency. The photodegradation rate of CIP by FII-BTO is 55.76%, and the reaction kinetic rate was increased by twice. Furthermore, compared with non-imprinted materials, FII-BTO selectively adsorbed CIP with Kselectivity value of 1.81, showing good selective photocatalytic degradation performance. This work provides valuable insights into the development of inorganic imprinting technology for selective degradation of pollutants, and provides promising directions for future catalyst applications.

Key words: Bismuth titanate, Inorganic imprinting technology, Ciprofloxacin, Selective photocatalysis, Nanosheet