Sterilization system for air purifier by combining ultraviolet light emitting diodes with TiO2

Xiaohui Huang; Huaibing Wang; Song Yin; Xiaorong Chen; Wei Chen; Hui Yang

doi:10.1002/jctb.2180

Sterilization system for air purifier by combining ultraviolet light emitting diodes with TiO₂

Xiaohui Huang, Huaibing Wang, Song Yin, Xiaorong Chen, Wei Chen, Hui Yang

Research output: Journal article publication › Journal article › Academic research › peer-review

14 Citations (Scopus)

Abstract

BACKGROUND: Ultraviolet light emitting diodes (UV LEDs) were used as a light source in TiO2 photocatalysis because of their manyadvantages, such as, long life, safety, lowpollution, etc. In this experiment, a light source panelwas successfully fabricated with UV LEDs, the light intensities of which were relatively uniform. RESULTS:Thesterilizationprocesscomprisedtwosteps. First,anaerosolwasblockedbyhigh efficient particulateair(HEPA)filter paper coated with TiO₂ photocatalyst. Second, Staphylococcus aureus in the aerosol decreased gradually in the photocatalysis process of UV LED/TiO ₂. After 52 h irradiation all the S. aureus were killed. CONCLUSION: The UV LED light source panel had a larger surface for irradiation than a mercury lamp. Thus, its sterilization efficiency was much better than that of traditional methods. The feasibility of UV LED/TiO2 for photocatalysis was proved.

Original language	English
Pages (from-to)	1437-1440
Number of pages	4
Journal	Journal of Chemical Technology and Biotechnology
Volume	84
Issue number	10
DOIs	https://doi.org/10.1002/jctb.2180
Publication status	Published - Oct 2009

Keywords

Light emitting diode
Photocatalysis
Staphylococcus aureus
Sterilization
TiO
UV LED

ASJC Scopus subject areas

Biotechnology
General Chemical Engineering
Renewable Energy, Sustainability and the Environment
Fuel Technology
Waste Management and Disposal
Pollution
Organic Chemistry
Inorganic Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

More information

10.1002/jctb.2180

Cite this

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title = "Sterilization system for air purifier by combining ultraviolet light emitting diodes with TiO2",

abstract = "BACKGROUND: Ultraviolet light emitting diodes (UV LEDs) were used as a light source in TiO2 photocatalysis because of their manyadvantages, such as, long life, safety, lowpollution, etc. In this experiment, a light source panelwas successfully fabricated with UV LEDs, the light intensities of which were relatively uniform. RESULTS:Thesterilizationprocesscomprisedtwosteps. First,anaerosolwasblockedbyhigh efficient particulateair(HEPA)filter paper coated with TiO2 photocatalyst. Second, Staphylococcus aureus in the aerosol decreased gradually in the photocatalysis process of UV LED/TiO 2. After 52 h irradiation all the S. aureus were killed. CONCLUSION: The UV LED light source panel had a larger surface for irradiation than a mercury lamp. Thus, its sterilization efficiency was much better than that of traditional methods. The feasibility of UV LED/TiO2 for photocatalysis was proved.",

keywords = "Light emitting diode, Photocatalysis, Staphylococcus aureus, Sterilization, TiO, UV LED",

author = "Xiaohui Huang and Huaibing Wang and Song Yin and Xiaorong Chen and Wei Chen and Hui Yang",

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T1 - Sterilization system for air purifier by combining ultraviolet light emitting diodes with TiO2

AU - Huang, Xiaohui

AU - Wang, Huaibing

AU - Yin, Song

AU - Chen, Xiaorong

AU - Chen, Wei

AU - Yang, Hui

PY - 2009/10

Y1 - 2009/10

N2 - BACKGROUND: Ultraviolet light emitting diodes (UV LEDs) were used as a light source in TiO2 photocatalysis because of their manyadvantages, such as, long life, safety, lowpollution, etc. In this experiment, a light source panelwas successfully fabricated with UV LEDs, the light intensities of which were relatively uniform. RESULTS:Thesterilizationprocesscomprisedtwosteps. First,anaerosolwasblockedbyhigh efficient particulateair(HEPA)filter paper coated with TiO2 photocatalyst. Second, Staphylococcus aureus in the aerosol decreased gradually in the photocatalysis process of UV LED/TiO 2. After 52 h irradiation all the S. aureus were killed. CONCLUSION: The UV LED light source panel had a larger surface for irradiation than a mercury lamp. Thus, its sterilization efficiency was much better than that of traditional methods. The feasibility of UV LED/TiO2 for photocatalysis was proved.

AB - BACKGROUND: Ultraviolet light emitting diodes (UV LEDs) were used as a light source in TiO2 photocatalysis because of their manyadvantages, such as, long life, safety, lowpollution, etc. In this experiment, a light source panelwas successfully fabricated with UV LEDs, the light intensities of which were relatively uniform. RESULTS:Thesterilizationprocesscomprisedtwosteps. First,anaerosolwasblockedbyhigh efficient particulateair(HEPA)filter paper coated with TiO2 photocatalyst. Second, Staphylococcus aureus in the aerosol decreased gradually in the photocatalysis process of UV LED/TiO 2. After 52 h irradiation all the S. aureus were killed. CONCLUSION: The UV LED light source panel had a larger surface for irradiation than a mercury lamp. Thus, its sterilization efficiency was much better than that of traditional methods. The feasibility of UV LED/TiO2 for photocatalysis was proved.

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KW - Photocatalysis

KW - Staphylococcus aureus

KW - Sterilization

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