Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, 518071, China.
Environ Sci Technol. 2022 Dec 6;56(23):16582-16601. doi: 10.1021/acs.est.2c05444. Epub 2022 Nov 11.
Photocatalysis is regarded as one of the most promising technologies for indoor volatile organic compounds (VOCs) elimination due to its low cost, safe operation, energy efficiency, and high mineralization efficiency under ambient conditions. However, the practical applications of this technology are limited, despite considerable research efforts in recent decades. Until now, most of the works were carried out in the laboratory and focused on exploring new catalytic materials. Only a few works involved the immobilization of catalysts and the design of reactors for practical applications. Therefore, this review systematically summarizes the research and development on photocatalytic oxidation (PCO) of VOCs, with emphasis on recent catalyst's immobilization and reactor designs in detail. First, different types of photocatalytic materials and the mechanisms for PCO of VOCs are briefly discussed. Then, both the catalyst's immobilization techniques and reactor designs are reviewed in detail. Finally, the existing challenges and future perspectives for PCO of VOCs are proposed. This work aims to provide updated information and research inspirations for the commercialization of this technology in the future.
光催化被认为是最有前途的室内挥发性有机化合物 (VOC) 消除技术之一，因为它在环境条件下具有低成本、安全操作、能源效率和高矿化效率。然而，尽管近几十年来进行了相当多的研究工作，该技术的实际应用仍然受到限制。到目前为止，大多数工作都是在实验室进行的，主要集中在探索新的催化材料上。只有少数工作涉及催化剂的固定化和用于实际应用的反应器的设计。因此，本综述系统地总结了光催化氧化 (PCO) VOCs 的研究与开发，重点详细介绍了最近的催化剂固定化和反应器设计。首先，简要讨论了不同类型的光催化材料和 PCO VOCs 的机理。然后，详细回顾了催化剂的固定化技术和反应器设计。最后，提出了 PCO VOCs 目前存在的挑战和未来展望。这项工作旨在为未来该技术的商业化提供最新信息和研究启示。
