Reaction Kinetics, Mechanisms and Catalysis

, Volume 126, Issue 2, pp 1115–1134 | Cite as

Photolysis of polychlorobiphenyls in the presence of nanocrystalline TiO2 and CdS/TiO2

  • Tatiana I. GorbunovaEmail author
  • Natalia S. Kozhevnikova
  • Andrey S. Vorokh
  • Andrey N. Enyashin
  • Marina G. Pervova
  • Alexander Ya. Zapevalov
  • Victor I. Saloutin
  • Oleg N. Chupakhin


We study the photolytic degradation of planar (PCB 2, PCB 12, PCB 13, PCB 15) and non-planar (PCB 8, PCB 29, PCB 31) polychlorobiphenyls in an aqueous alcohol under UV irradiation (λ = 240–320 nm) at ambient temperature and atmospheric pressure for 25 h on nanocrystalline TiO2 and CdS/TiO2. It is found that a conversion of PCB 2 (12.5%), PCB 12 (42.3%) and PCB 29 (98.0%) is more intense in the presence of the CdS/TiO2 composite, whereas mixture of the congeners PCB 8, PCB 13, PCB 15 and the congener PCB 31 can be photolyzed better in the presence of TiO2 with conversion 35.2% and 96.1%, respectively. The different conversions of the PCB congeners are explained considering the structures of the chloroaromatic radicals formed in situ as a result of the primary photolysis process and are confirmed by means of estimation of dipole moments calculated for singlet states of PCBs.


Polychlorobiphenyls Photocatalyst Photodegradation Selectivity Conversion 



The work was supported by Ministry of Education and Science of the Russian Federation (No. 075-00578-19-00, No. 0397-2019-0003).

Supplementary material

11144_2019_1543_MOESM1_ESM.docx (237 kb)
Supplementary material 1 (DOCX 236 kb)


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Tatiana I. Gorbunova
    • 1
    Email author
  • Natalia S. Kozhevnikova
    • 2
  • Andrey S. Vorokh
    • 2
  • Andrey N. Enyashin
    • 2
  • Marina G. Pervova
    • 1
  • Alexander Ya. Zapevalov
    • 1
  • Victor I. Saloutin
    • 1
  • Oleg N. Chupakhin
    • 1
  1. 1.I. Ya, Postovskii Institute of Organic SynthesisUral Branch, Russian Academy of SciencesEkaterinburgRussia
  2. 2.Institute of Solid State ChemistryUral Branch, Russian Academy of SciencesEkaterinburgRussia

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