Polyaniline/Bismuth Vanadate/Graphene Oxide (PANI-BiVO₄-GO or BGPA) composite was prepared by sonochemical deposition of bismuth vanadate-graphene oxide (BiVO₄) nanoparticles on the surface of polyaniline (PANI). The 5 wt% BGPA composite had the best photocatalytic degradation performances for MB, RhB, and SO dyes, about 1.56, 1.81, and 1.68 times more, respectively, than 1% BGPA composite. Meanwhile, the photocatalytic stability of BiVO₄ was significantly improved by introducing PANI into the PANI-BiVO₄-GO composite. These improvements in photocatalytic degradation performance and photocatalytic stability can be attributed to the formation of a heterojunction free electron between PANI and BiVO₄-GO. The existence of these extra free electrons can dramatically enhance the efficiency of photogenerated electrons, thus accelerating the transfer of photogenerated holes from BiVO₄-GO to PANI and constraining the self-oxidation of BiVO₄.

聚苯胺/钒酸铋/氧化石墨烯（PANI-BiVO ₄ -GO或BGPA）复合材料是通过声化学沉积钒酸铋-氧化石墨烯（BiVO ₄）纳米粒子在聚苯胺（PANI）表面上制备的。5wt％BGPA复合材料对MB，RhB和SO染料具有最佳的光催化降解性能，分别比1％BGPA复合材料高约1.56、1.81和1.68倍。同时，通过将PANI引入PANI-BiVO ₄ -GO复合材料中，BiVO ₄的光催化稳定性显着提高。这些光催化降解性能和光催化稳定性的改善可归因于PANI和BiVO ₄之间形成异质结自由电子-去。这些多余的自由电子的存在可以显着提高光生电子的效率，从而加速了光生空穴从BiVO ₄ -GO到PANI的转移，并限制了BiVO ₄的自氧化。