| abstract |
The invention relates to the technical field of materials, in particular to a photoelectric-piezoelectric composite material and a preparation method thereof. The specific technical scheme is as follows: a photoelectric-piezoelectric composite material is BiVO 4 ‑Bi 0.5 Na 0.5 TiO 3 With Bi 0.5 Na 0.5 TiO 3 The nanospheres are used as a matrix and are applied to Bi by a hydrothermal method 0.5 Na 0.5 TiO 3 BiVO grown on surface of nanosphere 4 . According to the invention, the composite photocatalytic material is arranged on the surface layer of the piezoelectric material, and the heterojunction formed by compounding the piezoelectric material and the photoelectric material is utilized, so that the separation rate of electron holes is improved, the service life of electrons is prolonged, the catalytic performance is improved, and further, the photoelectric-piezoelectric composite material disclosed by the invention can generate electrons and holes by absorbing solar energy in nature, and thus, the conversion of solar energy into electric energy is realized. |