Carbon quantum dots decorated Bi sub(2)WO sub(6) nanocomposite with enhanced photocatalytic oxidation activity for VOCs

We incorporated highly stable carbon quantum dots (CQDs) with Bi sub(2)WO sub(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 sub(2)WO sub(6) extend the absorption into visible light region and improve the photoexcited charge separation in comparison with pristine Bi sub(2)WO sub(6). The CQDs/Bi sub(2)WO sub(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.