Study of formaldehyde photocatalytic degradation using nano TiO2

Huili Yu; Kaili Zhang; Carole Rossi

doi:10.1117/12.779868

1 November 2007 Study of formaldehyde photocatalytic degradation using nano TiO₂

Huili Yu, Kaili Zhang, Carole Rossi

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64232M (2007) https://doi.org/10.1117/12.779868
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

In this study, formaldehyde, one of the major volatile organic compounds, is degraded using nano TiO₂ photocatalysis for improving indoor air quality. Polytetrafluoroethylene filter, a low cost and commonly used material in industry, is successfully employed as the substrate for nano TiO₂ photocatalyst coating at room temperature. A specific experimental set-up that is similar to actual air purification system is developed for the testing. The effects on formaldehyde photocatalytic degradation rate of some key factors are investigated. These factors include initial concentration, stream flow rate, reaction temperature, light source intensity, and relative humidity. Within the experimental ranges, the degradation rate increases with the enhancement of initial concentration and light intensity. The stream flow rate and reaction temperature have dual effects on the degradation rate. The degradation rate is relatively high under low relative humidity.

Citation Download Citation

Huili Yu, Kaili Zhang, and Carole Rossi "Study of formaldehyde photocatalytic degradation using nano TiO₂", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64232M (1 November 2007); https://doi.org/10.1117/12.779868

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