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<p>In this study, we synthesized a ZIF-8/graphene (Gr) composite and evaluated its photocatalytic degradation performance toward levofloxacin (LVX) under low-intensity UV light. The composite exhibited improved charge separation and enhanced reactive oxygen species (·OH, ·O<sub>2</sub><sup>−</sup>, h<sup>+</sup>) generation compared to its individual components. Under optimal conditions (20&#xa0;mg catalyst, 5&#xa0;mg/L LVX, neutral pH), a 25.70% degradation was achieved after 120&#xa0;min of irradiation, following pseudo-first-order (PFO) kinetics. While the degradation efficiency was modest, the catalyst operated effectively under low-energy conditions and demonstrated selective antibacterial activity against <i>E. coli</i> in dark conditions. These findings suggest that ZIF-8/Gr composites hold promise as dual-functional materials for pollutant mitigation and microbial control in niche wastewater applications, particularly where energy availability is limited. Further work is needed to enhance degradation efficiency and assess long-term operational stability.</p>

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ZIF-8/graphene composite for photocatalytic degradation under low intensity UV irradiation and antibacterial applications 

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月30日

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  • Calvin Manasseh Manivel,
  • Alvin Lim Teik Zheng,
  • Renuga Kannan,
  • Sivasangar Seenivasagam,
  • Taufiq Yap Yun Hin,
  • Supakorn Boonyuen,
  • Jacqueline Lease,
  • Yoshito Andou,
  • Kar Ban Tan

摘要

In this study, we synthesized a ZIF-8/graphene (Gr) composite and evaluated its photocatalytic degradation performance toward levofloxacin (LVX) under low-intensity UV light. The composite exhibited improved charge separation and enhanced reactive oxygen species (·OH, ·O2−, h+) generation compared to its individual components. Under optimal conditions (20 mg catalyst, 5 mg/L LVX, neutral pH), a 25.70% degradation was achieved after 120 min of irradiation, following pseudo-first-order (PFO) kinetics. While the degradation efficiency was modest, the catalyst operated effectively under low-energy conditions and demonstrated selective antibacterial activity against E. coli in dark conditions. These findings suggest that ZIF-8/Gr composites hold promise as dual-functional materials for pollutant mitigation and microbial control in niche wastewater applications, particularly where energy availability is limited. Further work is needed to enhance degradation efficiency and assess long-term operational stability.