Photocatalytic inactivation technologies for bioaerosols: advances and perspective

Bioaerosol control systems are urgently needed to inactivate airborne pathogenic microorganisms to prevent secondary contamination. Recently, with an increasing number of studies on the characteristics of bioaerosols, researchers have gained a better understanding of bioaerosols, which has promoted the development of bioaerosol control technology. Bioaerosol photocatalytic inactivation technology shows its superiority through excellent oxidation capacity, environmental friendliness, the absence of secondary contaminations, and good compatibility. However, there are very few available studies that comprehensively summarize and present the state of bioaerosol photocatalytic inactivation technology. This article mainly reviews the recent advances in advanced materials, combined technologies, carriers and reactors, applications and performance evaluations of photocatalytic inactivation technology. The efficiency, advantages and disadvantages of these factors are comprehensively discussed. This review also highlights the practical applications, addresses the challenges, and provides a perspective on bioaerosol photocatalytic inactivation for future research.