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<p>This article reports the successful synthesis of a novel photocatalytic composite material, ZnMoO<sub>4</sub>/Bi<sub>2</sub>S<sub>3,</sub> using a hydrothermal method. The optimal 15% ZnMoO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub> was highly efficient for antibiotic ciprofloxacin (CIP) decomposition under UV light illumination, which was much more remarkable than the pristine ZnMoO<sub>4</sub> and Bi<sub>2</sub>S<sub>3</sub>, respectively. The results revealed that the introduction of ZnMoO<sub>4</sub> on the surface of Bi<sub>2</sub>S<sub>3</sub> could broaden the light absorption range and boost the separation of photoinduced charge carriers to promote photocatalysis efficiency. In addition, the factors influencing the initial pH, catalyst dosage, CIP concentration, and various co-existing factors on the CIP degradation removal performance of 15% ZnMoO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub> were investigated. After four runs of adsorption–photodegradation towards CIP, 15% ZnMoO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub> still exhibited superior reduction activity and reusability. A possible photodegradation mechanism of degradation of CIP over 15% ZnMoO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub> was proposed and clarified through the electrochemical tests, XPS determination and active species trapping experiments. This study not only prepared an efficient photocatalyst but also further demonstrated the effectiveness of photocatalytic technology in antibiotic wastewater treatment.</p>

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Photocatalytic degradation performance of the novel ZnMoO4/Bi2S3 composite material for ciprofloxacin

  • 期刊论文

  • 发表日期：

    2025年1月3日

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  • Jianming Liu,
  • Jingwen Xue,
  • Xinyue Zhang,
  • Jianzhu Zhang,
  • Kun Tang,
  • Lin Deng

摘要

This article reports the successful synthesis of a novel photocatalytic composite material, ZnMoO4/Bi2S3, using a hydrothermal method. The optimal 15% ZnMoO4/Bi2S3 was highly efficient for antibiotic ciprofloxacin (CIP) decomposition under UV light illumination, which was much more remarkable than the pristine ZnMoO4 and Bi2S3, respectively. The results revealed that the introduction of ZnMoO4 on the surface of Bi2S3 could broaden the light absorption range and boost the separation of photoinduced charge carriers to promote photocatalysis efficiency. In addition, the factors influencing the initial pH, catalyst dosage, CIP concentration, and various co-existing factors on the CIP degradation removal performance of 15% ZnMoO4/Bi2S3 were investigated. After four runs of adsorption–photodegradation towards CIP, 15% ZnMoO4/Bi2S3 still exhibited superior reduction activity and reusability. A possible photodegradation mechanism of degradation of CIP over 15% ZnMoO4/Bi2S3 was proposed and clarified through the electrochemical tests, XPS determination and active species trapping experiments. This study not only prepared an efficient photocatalyst but also further demonstrated the effectiveness of photocatalytic technology in antibiotic wastewater treatment.