Degradation of Harmful Gases in Air by Ce³⁺/TiO₂ Complex Nanomembrane

Abstract:

. The Ce3+/TiO2 complex membrane made from Ce3+on the TiO2 framework with the activity of photocatalysis were prepared. The degradation behavior of the best mass ratio of Ce3+/TiO2 complex membrane , and the influences of the diameters of particles of Ce3+/TiO2 complex membrane on the degradation of the harmful gases under 254nm and 365nm ultraviolet light or natural light in room were investigated. AFM result showed that the Ce3+/TiO2 complex membrane were composed of nanoparticles with 10nm~50nm diameters of particles. The experimental results revealed that the smaller the nanoparticles in Ce3+/TiO2 complex membrane, the greater the degradation degree was. The best mole ratio of Ce3+ and TiO2 was 5% and the best mass ratio of Ce3+/TiO2 and formaldehyde were 7.06 under 254nm and 365nm ultraviolet and 23.55 under the natural light in room after 24h when the degradation percents of formaldehyde were more than 90%. Same as above conditions ammonia were 8.76 and 25.79 and benzene were 15.65 and 35.32. The degradation percents of Ce3+/TiO2 complex membrane to harmful gases were higher about 3 times under 254nm and 365nm ultraviolet than under the natural light in room.

• Periodical: Materials Science Forum (Volumes 610-613)
• Pages: 304-309
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.610-613.304
• Online since: January 2009
• Authors: Ling Li, Li Ping Peng
• Keywords: Ce³⁺/TiO₂ Complex Membrane, Degradation, Harmful Gas, Photocatalytic

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