Removal of indoor volatile organic compounds via photocatalytic oxidation: A short review and prospect

Yu Huang, Steven Sai Hang Ho, Ruiyuan Niu, Lifeng Xu, Yanfeng Lu, Junji Cao, Shuncheng Lee

Research output: Journal article publicationReview articleAcademic researchpeer-review

135 Citations (Scopus)

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.
Original languageEnglish
Article number56
JournalMolecules
Volume21
Issue number1
DOIs
Publication statusPublished - 1 Jan 2016

Keywords

  • Formaldehyde
  • Influencing factors
  • Photocatalysis
  • Review
  • VOCs

ASJC Scopus subject areas

  • Organic Chemistry

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