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<p>Ciprofloxacin contamination in water poses a significant environmental challenge, demanding efficient and sustainable remediation methods. Increased interest has been drawn towards visible-light-driven photocatalysis as a very effective and sustainable method of treating wastewater. Herein, this work describes the successful construction of a highly efficient BiOBr/MoS<sub>2</sub>/GO ternary nanocomposite through a simple hydrothermal method for the effective removal of CIP from wastewater. The resulting BiOBr/MoS<sub>2</sub>/GO nanocomposite exhibited superior removal percentage of ciprofloxacin upon visible light illumination, reaching approximately 93.95% efficiency after 120&#xa0;min under optimal conditions (pH-7, 10&#xa0;ppm-pollutant concentration, 40&#xa0;mg-catalyst dose). Furthermore, this improved activity was due to the synergistic interaction amongst BiOBr, MoS<sub>2</sub>, and GO, which facilitated effective charge separation with an extended light absorption capability. The prepared nanocomposite also exhibited a specific surface area of 9.93 m<sup>2</sup>/g with a nanoplate-cluster-sheet structure, presenting mesoporous characteristics that favoured active site exposure and charge transfer. In addition, the radical scavenging experiments confirmed that superoxide and hydroxyl radicals were the predominant reactive species in accomplishing the degradation process. This selective reactivity, coupled with optimized operational parameters, underscores the promising potential for BiOBr/MoS<sub>2</sub>/GO nanocomposite in the remediation of CIP from wastewater.</p> Graphical Abstract <p></p>

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Designing a visible light driven BiOBr/MoS2/GO ternary nanocomposite for photo degradation of ciprofloxacin

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • Akshay Verma,
  • Pooja Dhiman,
  • Genene Tessema Mola,
  • Tongtong Wang,
  • Gaurav Sharma

摘要

Ciprofloxacin contamination in water poses a significant environmental challenge, demanding efficient and sustainable remediation methods. Increased interest has been drawn towards visible-light-driven photocatalysis as a very effective and sustainable method of treating wastewater. Herein, this work describes the successful construction of a highly efficient BiOBr/MoS2/GO ternary nanocomposite through a simple hydrothermal method for the effective removal of CIP from wastewater. The resulting BiOBr/MoS2/GO nanocomposite exhibited superior removal percentage of ciprofloxacin upon visible light illumination, reaching approximately 93.95% efficiency after 120 min under optimal conditions (pH-7, 10 ppm-pollutant concentration, 40 mg-catalyst dose). Furthermore, this improved activity was due to the synergistic interaction amongst BiOBr, MoS2, and GO, which facilitated effective charge separation with an extended light absorption capability. The prepared nanocomposite also exhibited a specific surface area of 9.93 m2/g with a nanoplate-cluster-sheet structure, presenting mesoporous characteristics that favoured active site exposure and charge transfer. In addition, the radical scavenging experiments confirmed that superoxide and hydroxyl radicals were the predominant reactive species in accomplishing the degradation process. This selective reactivity, coupled with optimized operational parameters, underscores the promising potential for BiOBr/MoS2/GO nanocomposite in the remediation of CIP from wastewater.

Graphical Abstract