Reaction rate study of the photocatalytic degradation of dichloroacetic acid in a black body reactor

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Megatif, L.; Dillert, R.; Bahnemann, D.W.: Reaction rate study of the photocatalytic degradation of dichloroacetic acid in a black body reactor. In: Catalysts 9 (2019), Nr. 8, 635. DOI: https://doi.org/10.3390/catal9080635

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Sum total of downloads: 71




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Abstract: 
The light-induced degradation of dichloroacetic acid in aqueous suspensions containing the TiO2 photocatalyst Hombikat UV 100 was investigated. The reactions were performed in a black body reactor in which the rate of conversion, defined as the time derivative of the extent of conversion, is not affected by the light scattering properties of the photocatalysts. At sufficiently high concentrations of both the probe compound and the photocatalyst the rate of conversion was found to be unswayed by the initial concentration of the probe compound, the mass concentration of the photocatalyst, and the suspension volume. Thus, the chosen experimental conditions enable the determination of the rate of conversion and the quantum yield of the light induced degradation of dichloroacetic acid in aqueous photocatalyst suspension with sufficiently good reproducibility. The experimental procedure employed here seems to be generally applicable to determine rates of conversion and quantum yields that possibly allow a comparison of the activities of photocatalysts in aqueous suspensions.
License of this version: CC BY 4.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2019
Appears in Collections:Naturwissenschaftliche Fakultät

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pos. country downloads
total perc.
1 image of flag of Germany Germany 37 52.11%
2 image of flag of United States United States 13 18.31%
3 image of flag of Russian Federation Russian Federation 4 5.63%
4 image of flag of Czech Republic Czech Republic 4 5.63%
5 image of flag of India India 3 4.23%
6 image of flag of No geo information available No geo information available 1 1.41%
7 image of flag of Taiwan Taiwan 1 1.41%
8 image of flag of Syrian Arab Republic Syrian Arab Republic 1 1.41%
9 image of flag of Pakistan Pakistan 1 1.41%
10 image of flag of Mexico Mexico 1 1.41%
    other countries 5 7.04%

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