Regulating effects of anthraquinone substituents and additives in photo-catalytic oxygenation of p-xylene by molecular oxygen under visible light irradiation

This paper reports that the optical properties of anthraquinone and its photo-catalytic performance in the visible light-driven p-xylene oxidation can be fine-tuned and improved through varying its skeleton substituents at the molecular level, and the electron-withdrawing substituent exhibits a better improvement effect than the electron-donating one

Dabo Jiang

2021

Scholarcy highlights

  • This paper reports that the optical properties of anthraquinone and its photo-catalytic performance in the visible light-driven p-xylene oxidation can be fine-tuned and improved through varying its skeleton substituents at the molecular level, and the electron-withdrawing substituent exhibits a better improvement effect than the electron-donating one
  • The addition of benzenesulfonic acid in the above photocatalytic system can further increase PX conversion to 86.7%, along with a significant improvement in the selectivity of p-carboxybenzaldehyde and terephthalic acid, which likely originates from the unique recombination behavior of the photo-generated charge carriers of the catalyst and the additive driven by the strong interactions between their aromatic skeletons and acidic substituents
  • Based on quenching tests and EPR spectral characterizations, the oxygen vacancies, superoxide free radicals and singlet oxygen as the photo-generated active species are involved in the proposed photo-catalysis mechanism

Need more features? Save interactive summary cards to your Scholarcy Library.