Plasmonic enhanced piezoelectric photocatalytic performance with PVDF@BT/MoS2/Au by strong piezoelectric functional particle doping

The regulation of carriers by piezoelectric effect and plasmonic effect is considered to be the key to the efficient conversion of solar to chemical energy. In this work, we report a novel heterostructure piezoelectric photocatalyst by preparing MoS2 nanoflowers and AuNPs on Polyvinylidene Fluoride (PVDF) doped with BaTiO3 (BT). The piezoelectric properties of [email protected] composite fibers were greatly enhanced up to 4.5 times than that of pure PVDF by the dope of BT, which is much beneficial for the photocatalytic process. The enhanced piezoelectric properties can produce stronger regulation of photogenerated carriers caused by the plasmonic effect, resulting in higher photocatalytic activity. The optimized [email protected]/MoS2/Au active film exhibited significantly enhanced photocatalytic activity, the catalytic efficiency of methylene blue (MB) solution was as high as 99.7% within 10 min, and the pseudo-first-order kinetic constant (K) was as high as 0.3973 min−1, which is a 3.3-fold improvement over piezoelectric catalysis and an 11.9-fold improvement over photocatalysis. And oxytetracycline (OTC) degradation reached 97.6 % within 60 min, showing excellent versatility. This work provides an interesting solution for designing novel structures for efficient conversion of solar energy to chemical energy.