Ultraviolet-Photocatalytic Combined Catalytic Degradation of Formaldehyde

DOI

10.2991/978-94-6463-708-3_53How to use a DOI?

Keywords

Formaldehyde; Photocatalyst; Ultraviolet Radiation; Pollution control

Abstract

The hazards of formaldehyde is a highly concerned issue in environmental management. Efficient, clean, and convenient methods for formaldehyde treatment still need to be developed, among which photocatalytic method is a promising approach. This study designed an experimental apparatus using TiO₂ photocatalyst and ultraviolet irradiation to improve its catalytic effect. The 5% TiO₂ -containg water solution was spraied on transparent SiO₂ glass. Nano Al₂O₃ was added in the solution to enhance catalyst effect. The contant of Al₂O₃ was 0%, 1%, 2%, and 3%. The distribution morphology of photocatalyst on glass surface was observed using scanning electron microscope, and the relationship between its structure and properties was studied. Experiments have shown that UV irradiation or TiO₂ photocatalyst can both reduce the concentration of formaldehyde, yet the effect is relatively poor. Combined action of UV-TiO₂ photocatalyst show better efficiency of formaldehyde decomposition. Adding Al₂O₃ as an enhancement can effectively improve the decomposition rate of formaldehyde, which may be because the addition of Al₂O₃ particles can increase the contact area between TiO₂ photocatalyst and air. However, excessive Al₂O₃ particles can actually reduce the rate of formaldehyde decomposition. The optimal content of nano Al₂O₃ is 2%, and its formaldehyde degradation coefficient in 60 min reaches 32%, which is much higher than the case without alumina.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Xuege Sun
AU  - Xiaoyu Cui
AU  - Mingda Sun
AU  - Wei Cui
PY  - 2025
DA  - 2025/05/09
TI  - Ultraviolet-Photocatalytic Combined Catalytic Degradation of Formaldehyde
BT  - Proceedings of the 2024 10th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2024)
PB  - Atlantis Press
SP  - 501
EP  - 509
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-708-3_53
DO  - 10.2991/978-94-6463-708-3_53
ID  - Sun2025
ER  -