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<p>Bioaerosols represent a major health issue because they contain viruses, bacteria, biological fragments or residues and fungal spores. Humans are exposed to nearly 10<sup>4</sup> viable bacteria and 10<sup>4</sup> viable fungi per cubic metre of indoor air. Here, we review bioaerosols with emphasis on their sources, behaviour, detection methods, mitigation, transmission, and photocatalytic disinfection. Disinfection methods include fibrous photocatalytic membranes with interception efficiency comparable to commercial masks and high bactericidal efficiency, Z-scheme and S-scheme heterojunctions-based materials, biofilms loaded with composite catalysts, and photocatalytic filters coupled with air ionizers. Bioaerosols inactivation reaches 99.99% in 4&#xa0;h under ultraviolet light, and 99.3% in 14.1&#xa0;s under visible light using advanced heterojunction photocatalysts.</p>

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Photocatalytic inactivation and disinfection of bioaerosols: a review

  • 期刊论文

  • 发表日期：

    2025年7月5日

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  • Amit Kumar,
  • Piyush Verma,
  • Ravinder Kaushik

摘要

Bioaerosols represent a major health issue because they contain viruses, bacteria, biological fragments or residues and fungal spores. Humans are exposed to nearly 104 viable bacteria and 104 viable fungi per cubic metre of indoor air. Here, we review bioaerosols with emphasis on their sources, behaviour, detection methods, mitigation, transmission, and photocatalytic disinfection. Disinfection methods include fibrous photocatalytic membranes with interception efficiency comparable to commercial masks and high bactericidal efficiency, Z-scheme and S-scheme heterojunctions-based materials, biofilms loaded with composite catalysts, and photocatalytic filters coupled with air ionizers. Bioaerosols inactivation reaches 99.99% in 4 h under ultraviolet light, and 99.3% in 14.1 s under visible light using advanced heterojunction photocatalysts.