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Photolysis of Aqueous H2O2: Quantum Yield and Applications for Polychromatic UV Actinometry in Photoreactors
Abstract
Methanol is used to measure the yield of *OH radicals produced in the photolysis of H2O2 in aqueous solutions. The UV photolysis of H202 generates *OH radicals, which in the presence of methanol, oxygen, and phosphate buffer form formaldehyde, namely, phi(HCHO) = phi(*OH). The quantum yield of *OH has been redetermined in view of literature inconsistencies resulting in phi(*OH) = 1.11 +/- 0.07 in the excitation range of 205-280 nm. The constancy of phi(*OH) and the ease and sensitivity of the formaldehyde product analysis makes the H2O2/CH3OH system suitable for polychromatic UV actinometry. In addition, the relatively low cost of the main components and the possibility of destroying the methanol before disposal qualify the system for both monochromatic and polychromatic actinometry in a large volume of water. The H2O2/CH3OH system was applied in different commercial UV photoreactors.
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Cited by
Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview
Cuerda-Correa, E. M., Alexandre-Franco, M. F., & Fernández-González, C. (2019) · Water · doi:10.3390/w12010102 · Cited by 671
Shiraishi, Y., Kanazawa, S., Kofuji, Y., Sakamoto, H., Ichikawa, S., Tanaka, S., & Hirai, T. (2014) · Angewandte Chemie International Edition · doi:10.1002/anie.201407938 · Cited by 649
Kofuji, Y., Isobe, Y., Shiraishi, Y., Sakamoto, H., Tanaka, S., Ichikawa, S., & Hirai, T. (2016) · Journal of the American Chemical Society · doi:10.1021/jacs.6b05806 · Cited by 587
Wang, L., Li, B., Dionysiou, D. D., Chen, B., Yang, J., & Li, J. (2022) · Environmental Science & Technology · doi:10.1021/acs.est.1c03796 · Cited by 328
Silva, L. G. M., Moreira, F. C., Souza, A. A. U., Souza, S. M. A. G. U., Boaventura, R. A. R., & Vilar, V. J. P. (2018) · Journal of Cleaner Production · doi:10.1016/j.jclepro.2018.07.001 · Cited by 78
Metadata
- Authors
- Goldstein, S., Aschengrau, D., Diamant, Y., & Rabani, J.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-10-06
- Volume
- 41
- Issue
- 21
- Pages
- 7486-7490
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2026978128
- Cited by
- 241
- References
- 0
- FWCI
- 5.59
- Type
- journal article
- Language
- en
- Open access
- closed
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- Goldstein, S., Aschengrau, D., Diamant, Y., & Rabani, J. (2007). Photolysis of Aqueous H2O2: Quantum Yield and Applications for Polychromatic UV Actinometry in Photoreactors. Environmental Science & Technology. https://doi.org/10.1021/es071379t
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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