Quick screening method for the photocatalytic activity of nanoparticles and powdery materials

• Published in: Applied catalysis. A, General Vol. 352; no. 1; pp. 271 - 276
• Main Authors: Ritter, Axel, Reifler, Felix A., Saini, Sunil
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 15.01.2009; Elsevier
• Subjects: Catalysis; Chemistry; Colloidal state and disperse state; Exact sciences and technology; General and physical chemistry; Nanoparticle; Photocatalytic activity; Photochemistry; Photodegradation; Physical and chemical studies. Granulometry. Electrokinetic phenomena; Physical chemistry of induced reactions (with radiations, particles and ultrasonics); Screening method; Testing device; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Photodegradation; Photocatalytic activity; Screening method; Nanoparticle; Testing device; Volatile compound; Device; Photocatalysis; Volatile organic compound; Carbon; Heterogeneous catalysis; Distribution; Organic compounds; Photochemical degradation
• ISSN: 0926-860X; 1873-3875
• DOI: 10.1016/j.apcata.2008.10.018

A new quantitative screening method for the photocatalytic activity of nanoparticles and powdery materials was developed. With a custom-built apparatus the measurement of the photodegradation of non-volatile organic compounds in dependence of the inorganic photocatalyst and experimental factors like irradiation time, temperature, organic compound, spectral distribution and irradiance is possible. ▪ A new quantitative screening method for the photocatalytic activity of nanoparticles and powdery materials was developed. With a custom-built apparatus the measurement of the photodegradation of non-volatile organic compounds in dependence of the inorganic photocatalyst and experimental factors like irradiation time, temperature, organic compound, spectral distribution and irradiance is possible. By applying various spectral distributions and irradiances slightly lower than in outdoor conditions, the described method uses application-oriented testing conditions. It can be used for the screening of the photocatalytic activity of newly developed materials towards any carbon containing non-volatile compounds.