Carbon quantum dots decorated Bi2WO6 nanocomposite with enhanced photocatalytic oxidation activity for VOCs

We incorporated highly stable carbon quantum dots (CQDs) with Bi 2 WO 6 to sufficiently photocatalytic removal of gaseous volatile organic compounds (VOCs) utilize solar energy. With the facile decoration of CQDs, the composite photocatalysts of CQDs/Bi 2 WO 6 extend the absorption into visible light region and improve the photoexcited charge separation in comparison with pristine Bi 2 WO 6 . The CQDs/Bi 2 WO 6 exhibited higher photocatalytic oxidation activities towards acetone and toluene under both UV–vis and visible light irradiation. In all, CQDs could be a promising candidate for visible light photocatalysts due to their superior ability to extend the visible absorption and suppress the photo-excited charge recombination.