Mechanochemical destruction of decabromodiphenyl ether into visible light photocatalyst BiOBr

Kunlun Zhang, Jun Huang, Haizhu Wang, Gang Yu, Bin Wang, Shubo Deng, Junya Kano, Qiwu Zhang

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

In the present study, mechanochemical (MC) treatment of polybrominated diphenyl ethers (PBDEs), a kind of emerging persistent organic pollutant (POPs), was performed using a high energy ball mill. With Bi2O3 as co-milling reagent, deca-BDE was effectively destroyed and no hazardous intermediates or organic products were observed in the MC reaction. Meanwhile, BiOBr, a promising visible light photocatalyst, was proved to be the final product which could be utilized in further steps. Neither excessive Bi 2O3 nor unreacted deca-BDE was left after the reaction as they were originally added at stoichiometric ratio for BiOBr formation. FITR and Raman analyses demonstrate the collapse of deca-BDE skeleton and the cleavage of C-Br bonds with the generation of inorganic carbon, revealing the mechanism of carbonization and debromination. The gaseous products at different reaction atmosphere were also analyzed, showing that mostly CO2 with a fraction of CO were released during the MC process. The reaction formula of deca-BDE and Bi2O3 was then proposed based on the identified final products. Besides, the photocatalytic activity of the generated BiOBr was evaluated using methyl orange as the model pollutant. A good degradation performance from BiOBr was achieved under both simulated sunlight and visible light irradiation, indicating the possibility for its further utilization. This journal is

Original languageEnglish
Pages (from-to)14719-14724
Number of pages6
JournalRSC Advances
Volume4
Issue number28
DOIs
Publication statusPublished - 2014

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'Mechanochemical destruction of decabromodiphenyl ether into visible light photocatalyst BiOBr'. Together they form a unique fingerprint.

  • Cite this

    Zhang, K., Huang, J., Wang, H., Yu, G., Wang, B., Deng, S., Kano, J., & Zhang, Q. (2014). Mechanochemical destruction of decabromodiphenyl ether into visible light photocatalyst BiOBr. RSC Advances, 4(28), 14719-14724. https://doi.org/10.1039/c3ra47738j