Removal of Indoor Volatile Organic Compounds via Photocatalytic Oxidation: A Short Review and ProspectReport as inadecuate




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Key Lab of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, China

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State Key Lab of Loess and Quaternary Geology SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, China

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Division of Atmospheric Sciences, Desert Research Institute, Reno, NV 89512, USA

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Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China





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Authors to whom correspondence should be addressed.



Academic Editors: Jimmy C. Yu and Wing-Kei Ho

Abstract 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. View Full-Text

Keywords: VOCs; formaldehyde; photocatalysis; review; influencing factors VOCs; formaldehyde; photocatalysis; review; influencing factors





Author: Yu Huang 1,2,* , Steven Sai Hang Ho 1,3, Yanfeng Lu 1, Ruiyuan Niu 1, Lifeng Xu 1, Junji Cao 1,2,* and Shuncheng Lee 4

Source: http://mdpi.com/



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