Removal of Indoor Volatile Organic Compounds via Photocatalytic Oxidation: A Short Review and Prospect.
Removal of Indoor Volatile Organic Compounds via Photocatalytic Oxidation: A Short Review and Prospect.
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光催化氧化去除室内挥发性有机化合物：简要回顾与展望
DOI：
10.3390/molecules21010056
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发表时间：
2016-01-04
期刊：
影响因子：
--
通讯作者：
Lee S
中科院分区：
文献类型：
--
作者：
Huang Y;Ho SS;Lu Y;Niu R;Xu L;Cao J;Lee S
挥发性有机化合物（VOCs）普遍存在于室内环境中。吸入挥发性有机化合物会引起刺激、呼吸困难和恶心，并损害中枢神经系统和其他器官。甲醛是一种特别重要的VOC，因为它甚至是一种致癌物质。因此，去除VOCs对控制室内空气质量（IAQ）至关重要。光催化氧化已经证明了从室内环境中去除有毒VOC和甲醛的可行性。该技术具有化学稳定性高、价格低廉、无毒等优点，并能在光照下去除多种有机物。本文综述了室内环境中VOCs和甲醛的传统空气净化方法和光催化氧化降解方法。讨论了温度、相对湿度、光催化剂的失活和再活化等因素对光催化活性的影响。提出了光催化技术在改善室内空气品质方面的应用前景。
Volatile organic compounds (VOCs) are ubiquitous in indoor environments. Inhalation of VOCs can cause irritation, difficulty breathing, and nausea, and damage the central nervous system as well as other organs. Formaldehyde is a particularly important VOC as it is even a carcinogen. Removal of VOCs is thus critical to control indoor air quality (IAQ). Photocatalytic oxidation has demonstrated feasibility to remove toxic VOCs and formaldehyde from indoor environments. The technique is highly-chemical stable, inexpensive, non-toxic, and capable of removing a wide variety of organics under light irradiation. In this paper, we review and summarize the traditional air cleaning methods and current photocatalytic oxidation approaches in both of VOCs and formaldehyde degradation in indoor environments. Influencing factors such as temperature, relative humidity, deactivation and reactivations of the photocatalyst are discussed. Aspects of the application of the photocatalytic technique to improve the IAQ are suggested.
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