| abstract |
The invention discloses a sodium bismuth titanate/graphite phase carbon nitride heterojunction piezoelectric photocatalyst and a preparation method thereof, and solves the problem that the preparation of the existing heterojunction photocatalyst is complicated, the cost is high, and the to improve the catalytic activity of g-C 3 N 4 . In the invention, the graphite phase carbon nitride photocatalyst is synthesized by a one-step thermal polymerization method, the sodium bismuth titanate nano-particles are synthesized by a one-step hydrothermal process, and the NBT/g-C 3 N 4 heterostructure piezoelectric light is obtained by simple grinding, mixing and calcining. The catalyst, g-C 3 N 4 , can absorb part of the visible light to generate photogenerated carriers, and during the stirring process, the surface of the piezoelectric material NBT is charged due to the external pressure, and the piezoelectric polarization is formed at the interface of the two materials. An electric field is built to drive the photogenerated electrons and holes to move in opposite directions. By controlling the ratio of NBT to g-C 3 N 4 in the present invention, piezoelectric photocatalysts with different photocatalytic properties can be obtained for organic dye degradation and hydrogen production. |