LAUSR

In this study, H3PW12O40 (PW12) and binuclear phthalocyanine (bi-CoPc)-modified nanofilms PW12–BiVO4–bi-CoPc were prepared by a modified metal–organic decomposition method. The photocatalytic performances of BiVO4 and PW12–BiVO4–bi-CoPc have been investigated by photocatalytic degradation of nitrogen dioxide under visible light irradiation. The PW12 could act as an electron acceptor and transfer electrons, while the bi-CoPc functioned as a hole-transporting material to enhance the photocatalytic activity of bismuth vanadate. Under illumination with visible light, PW12–BVO–bi-CoPc nanofilms exhibit a 3-fold enhancement in photocatalytic degradation of NO2. Transient photocurrent experiments and fluorescence spectroscopy were also performed to confirm the above conclusions.