Degradation of indoor formaldehyde by the flexible porous material loaded photocatalyst
Indoor formaldehyde purification is a crucial subject that has received much attention to enhance indoor air quality. Photocatalytic technology can degrade formaldehyde into harmless small molecules and avoid secondary pollution. To improve the photocatalytic purification efficiency, the photocataly...
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| Published in | Journal of environmental chemical engineering Vol. 12; no. 1; p. 111823 |
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| Main Authors | , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Ltd
01.02.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 2213-3437 2213-3437 |
| DOI | 10.1016/j.jece.2023.111823 |
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| Abstract | Indoor formaldehyde purification is a crucial subject that has received much attention to enhance indoor air quality. Photocatalytic technology can degrade formaldehyde into harmless small molecules and avoid secondary pollution. To improve the photocatalytic purification efficiency, the photocatalysts were loaded on the flexible porous material to degrade indoor formaldehyde. The TiO2-4% carbon nanotubes/nonwoven fabric showed 20% higher photocatalytic performance than pure TiO2. The influence of airflow organization on the photocatalytic process was analyzed by experiment and CFD method. The formaldehyde degradation efficiency could be increased by more than 10% with the air flow of same-side downward and upward return. The interactions between ventilation and photocatalysis were investigated. Under continuous ventilation, the photocatalytic process can also effectively improve the purification efficiency of formaldehyde, and the purification rate of indoor formaldehyde can reach 97% under the combined action of ventilation and photocatalysis in 30 min.
•The photocatalysts were loaded on the flexible porous material to degrade indoor formaldehyde.•The influence of airflow organization on the photocatalytic process was analyzed.•The interactions between ventilation and photocatalysis were investigated. |
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| AbstractList | Indoor formaldehyde purification is a crucial subject that has received much attention to enhance indoor air quality. Photocatalytic technology can degrade formaldehyde into harmless small molecules and avoid secondary pollution. To improve the photocatalytic purification efficiency, the photocatalysts were loaded on the flexible porous material to degrade indoor formaldehyde. The TiO2-4% carbon nanotubes/nonwoven fabric showed 20% higher photocatalytic performance than pure TiO2. The influence of airflow organization on the photocatalytic process was analyzed by experiment and CFD method. The formaldehyde degradation efficiency could be increased by more than 10% with the air flow of same-side downward and upward return. The interactions between ventilation and photocatalysis were investigated. Under continuous ventilation, the photocatalytic process can also effectively improve the purification efficiency of formaldehyde, and the purification rate of indoor formaldehyde can reach 97% under the combined action of ventilation and photocatalysis in 30 min.
•The photocatalysts were loaded on the flexible porous material to degrade indoor formaldehyde.•The influence of airflow organization on the photocatalytic process was analyzed.•The interactions between ventilation and photocatalysis were investigated. |
| ArticleNumber | 111823 |
| Author | Yi, Gao zhe, Lin Tianhu, Zhang huipeng, Zhou Yuxin, Zhang Yandi, Rao |
| Author_xml | – sequence: 1 givenname: Gao surname: Yi fullname: Yi, Gao organization: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China – sequence: 2 givenname: Lin surname: zhe fullname: zhe, Lin organization: Heibei Province Low-carbon and Clean Building Heating Technology Innovation Center, Hebei, Yanshan University, Qinhuangdao 066006, China – sequence: 3 givenname: Zhou surname: huipeng fullname: huipeng, Zhou organization: Heibei Province Low-carbon and Clean Building Heating Technology Innovation Center, Hebei, Yanshan University, Qinhuangdao 066006, China – sequence: 4 givenname: Zhang surname: Yuxin fullname: Yuxin, Zhang organization: Heibei Province Low-carbon and Clean Building Heating Technology Innovation Center, Hebei, Yanshan University, Qinhuangdao 066006, China – sequence: 5 givenname: Zhang surname: Tianhu fullname: Tianhu, Zhang email: thzhang@ysu.edu.cn organization: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China – sequence: 6 givenname: Rao surname: Yandi fullname: Yandi, Rao email: ryd1989@ysu.edu.cn organization: Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China |
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| Keywords | CFD Ventilation Photocatalysis Formaldehyde TiO2 |
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