4.7 Article

Solar light mediated anthracene abatement in aerated aqueous media using a thermoplastic nanocomposite photocatalyst

Journal

CHEMOSPHERE
Volume 303, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2022.134988

Keywords

Anthracene photodegradation; Thermoplastic nanocomposite; Xenobiotic water pollutant; Water remediation; Solar-mediated depollution; Photodegradation mechanism

Funding

  1. University of Catania

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The photocatalytic degradation of polycyclic aromatic hydrocarbons (PAHs) under solar light stimulation was investigated, and a possible degradation mechanism was proposed.
Polycyclic aromatic hydrocarbons (PAHs) are the most widespread xenobiotic pollutants in water and their abatement usually involves expensive and energy-consuming treatments. In this work, anthracene (AN) was selected as the recalcitrant model of PAHs and its solar light-stimulated heterogeneous photocatalytic abatement in aerated aqueous media was investigated using a new TiO2 derived thermoplastic nanocomposite in thin film form. The results were also compared with the benchmark TiO2 photocatalyst in slurry form. Finally, the possible contribution of reactive intermediates such as hydroxyl radical, AN radical cation and singlet oxygen, was investigated by using a hydroxyl radical trap and laser flash photolysis. Based on the obtained results, a feasible mechanism for AN photodegradation, which involves hydroxyl radical as the key oxidizing species is proposed.

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