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Zizhen Wu, Zhao Wang, Jun Shi, Huiping Deng. Construction of Bi2Fe4O9/MXene Schottky heterojunction: synergistic charge transfer for efficient photocatalytic degradation of ciprofloxacin. Green Energy&Environment. doi: 10.1016/j.gee.2026.02.002
Citation: Zizhen Wu, Zhao Wang, Jun Shi, Huiping Deng. Construction of Bi2Fe4O9/MXene Schottky heterojunction: synergistic charge transfer for efficient photocatalytic degradation of ciprofloxacin. Green Energy&Environment. doi: 10.1016/j.gee.2026.02.002
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Construction of Bi2Fe4O9/MXene Schottky heterojunction: synergistic charge transfer for efficient photocatalytic degradation of ciprofloxacin

doi: 10.1016/j.gee.2026.02.002

  • a. Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, Yunnan, China;

  • b. Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China;

  • c. Shanghai Institute of Pollution Control and Ecological Security, Key Laboratory of Yangtze River Water Environment Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China

Funds:

The National Key Research and Development Program of China (2020YFD1100501).

  • Received date 30 September 2025, Accepted date 03 February 2026, RevRecd date 22 December 2025, Available online 09 February 2026
    Abstract
  • MXene has become an emerging two-dimensional layered material of significant interest in the field of photocatalysis. Introducing Ti3C2-MXene at the semiconductor interface has become a promising strategy for enhancing the photocatalytic performance through charge carrier separation. In this study, a Bi2Fe4O9/1%Ti3C2 (BFT-1) Schottky heterojunction photocatalyst was successfully synthesized to efficiently remove ciprofloxacin (CIP) from water. Under visible-light irradiation for 50 min, the degradation of CIP by BFT-1 reached 85.7% (k = 0.032 min−1), which was 1.6 times that of the pure Bi2Fe4O9 (BFO). The morphological characterization and photoelectrochemical analyses confirmed the successful synthesis of BFT-1. The Schottky heterojunction facilitated electron transfer and inhibited carrier recombination. Meanwhile, the BFT-1/Vis system demonstrated good adaptability to various environmental substrates in water. The BFT-1 photocatalyst also exhibited excellent stability and reusability over multiple cycles, along with minimal metal ion leaching. This research demonstrated the great potential of the BFT-1/Vis system as an efficient solution for the treatment of antibiotic-contaminated wastewater.

     

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