ENHANCING PHOTOCATALYTIC AIR PURIFICATION METHODS IN CLOSED ECOLOGICAL SYSTEMS AND PROSPECTS FOR THE APPLICATION OF INTEGRATED FACADE SYSTEMS
Keywords:
photocatalytic oxidation, titanium dioxide (TiO2), integrated façade, air purification, degradation, graphene oxide, Langmuir–Hinshelwood kinetics, energy efficiency, closed ecological systemsAbstract
This paper presents an in-depth analysis of indoor environmental air pollution, the impacts of volatile organic compounds (VOC) on human health, and the scientific and practical foundations of air purification technologies based on photocatalytic oxidation. The study investigates the photocatalytic activity of semiconductor catalysts—titanium dioxide (TiO2), zinc oxide (ZnO), silicon-based nanostructures, and graphene oxide (GO)—and examines their potential application in integrated building façade systems. In particular, based on recent studies from 2024–2026, kinetic modeling (Langmuir–Hinshelwood and pseudo-first-order models) has demonstrated that photocatalytic lamellae can achieve up to 9% NOx gas degradation, up to 99% bioaerosol inactivation, and 15–17% energy savings in HVAC systems
References
1. Koshlak H. et al. Plasma photocatalysis: A Novel Approach for Enhanced Air Disinfection. Materials, 2025, 18, 1870. MDPI. https://www.mdpi.com/1996-1944/18/8/1870?utm_source=chatgpt.comMDPI
2. Tummino M.L., Navarro Yerga R.M. Photocatalysis for Air and Water Purification. Catalysts, 2024. https://www.mdpi.com/2073-4344/14/7/434
3. Baig, A.; Siddique, M. Visible-Light-Active Photocatalysts. Materials. 2025. MDPI. https://www.mdpi.com/2073-4344/15/2/100MDPI
4. Photocatalytic facade elements for natural ventilation and air purification. Buildings, 2024, 14, 2481. https://www.mdpi.com/2075-5309/14/8/2481
5. Anderson C., Bard A.J. Improved photocatalytic activity of TiO2/SiO2. Applied Catalysis A, 2006. https://pmc.ncbi.nlm.nih.gov/articles/PMC3170388/
6. Zhang, L. Mesoporous SiO2 and TiO2 Nanocomposites. RSC Advances, 2026. https://pubs.rsc.org/ra/article/16/10/9280/909505/Preparation-of-mesoporous-nanosphere-SiO2-TiO2
7. Abou Zeid S. Advancements in ZnO-Based Photocatalysts. Crystals, 2024. https://www.mdpi.com/2073-4352/14/7/611https://www.mdpi.com/2073-4352/14/7/611
8. Alvarez-Ramirez, J., Ochoa-Tapia, J. A., & Viveros, T. (2026). Langmuir–Hinshelwood kinetics: a singular value decomposition perspective on the quasi-steady state assumption. Reaction Kinetics, Mechanisms and Catalysis, 139, 71–97. https://doi.org/10.1007/s11144-025-02953-6
