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Photolysis of CH3I under UV irradiation: effects of solvents, pH, and concentration

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Abstract

In this work, the effects of the solvents, pH, and concentration on the photolysis of CH3I under UV irradiation were investigated. The photolysis of CH3I mainly occurs in the gas phase and is faster in its aqueous solution compared to in its n-hexane and methanol–water solutions. UV irradiation-induced photolysis of CH3I produces I2 and I3− whereas the formation of the latter is affected by the former. In addition, both the pH and concentration of CH3I aqueous solutions affect the formation and transformation of I3− and I2. The results are helpful and referable to understanding the photolysis behavior of CH3I under UV irradiation.

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Acknowledgements

This work has been supported by the National Natural Science Funds of China (12005086, 22176077); Science and Technology Program of Gansu Province, China (20JR10RA615).

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Authors and Affiliations

  1. Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China

    Wangsuo Wu & Duoqiang Pan

  2. School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China

    Yinghao Xu, Sirui Wu, Zhenpeng Cui, Yang Fan, Wangsuo Wu & Duoqiang Pan

  3. China Nuclear Power Technology Research Institute Co. Ltd, Shenzhen, 518000, China

    Wei Dai & Peng Chen

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  1. Yinghao Xu
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  2. Sirui Wu
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Correspondence to Zhenpeng Cui or Duoqiang Pan.

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Xu, Y., Wu, S., Cui, Z. et al. Photolysis of CH3I under UV irradiation: effects of solvents, pH, and concentration. J Radioanal Nucl Chem 332, 973–979 (2023). https://doi.org/10.1007/s10967-022-08690-7

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  • DOI: https://doi.org/10.1007/s10967-022-08690-7

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