College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, Zhejiang, China.
School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China.
J Environ Manage. 2024 Aug;366:121875. doi: 10.1016/j.jenvman.2024.121875. Epub 2024 Jul 16.
Currently, microbial contamination issues have globally brought out a huge health threat to human beings and animals. To be specific, microorganisms including bacteria and viruses display durable ecological toxicity and various diseases to aquatic organisms. In the past decade, the photocatalytic microorganism inactivation technique has attracted more and more concern owing to its green, low-cost, and sustainable process. A variety kinds of photocatalysts have been employed for killing microorganisms in the natural environment. However, two predominant shortcomings including low activity of photocatalysts and diverse impacts of water characteristics are still displayed in the current photocatalytic disinfection system. So far, various strategies to improve the inherent activity of photocatalysts. Other than the modification of photocatalysts, the optimization of environments of water bodies has been also conducted to enhance microorganisms inactivation. In this mini-review, we outlined the recent progress in photocatalytic sterilization of microorganisms. Meanwhile, the relevant methods of photocatalyst modification and the influences of water body characteristics on disinfection ability were thoroughly elaborated. More importantly, the relationships between strategies for constructing advanced photocatalytic microorganism inactivation systems and improved performance were correlated. Finally, the perspectives on the prospects and challenges of photocatalytic disinfection were presented. We sincerely hope that this critical mini-review can inspire some new concepts and ideas in designing advanced photocatalytic disinfection systems.
目前，微生物污染问题已经给人类和动物的健康带来了全球性的巨大威胁。具体来说，包括细菌和病毒在内的微生物对水生生物具有持久的生态毒性和各种疾病。在过去的十年中，由于其绿色、低成本和可持续的工艺，光催化微生物灭活技术引起了越来越多的关注。已经使用了各种光催化剂来杀死自然环境中的微生物。然而，在当前的光催化消毒系统中，仍然存在两个主要的缺点，包括光催化剂的活性低和水特性的多种影响。到目前为止，已经提出了各种策略来提高光催化剂的固有活性。除了对光催化剂进行改性外，还对水体环境进行了优化，以增强微生物的失活。在这篇小型综述中，我们概述了微生物的光催化灭菌的最新进展。同时，还详细阐述了光催化剂改性的相关方法以及水体特性对消毒能力的影响。更重要的是，构建先进的光催化微生物灭活系统的策略与改进性能之间的关系被关联起来。最后，对光催化消毒的前景和挑战提出了看法。我们真诚地希望这篇重要的小型综述能够为设计先进的光催化消毒系统带来一些新的概念和思路。
