Herein, we report the synthesis of novel nitrogen doped reduced graphene oxide/ BiVO₄ photo catalyst by single step hydrothermal method. The physicochemical properties of the catalysts were characterized using XRD, N₂ adsorption-desorption, Raman, XPS, SEM TEM, DRS-UV and EIS techniques. The synthesized catalysts were tested for their catalytic activity in the photo degradation of some harmful textile dyes (methylene blue & congo red) and antibiotics (metronidazole and chloramphenicol) under visible light irradiation. Reduced charge recombination and enhanced photocatalytic activity were observed due to the concerted effect between BiVO₄ and nitrogen-rGO. The degradation efficiency of BiVO₄/N-rGO in the degradation of CR and MB was remarkably high i.e 95% and 98% under visible light irradiation. Similarly 95% of MTZ and 93% of CAP were degraded under visible light irradiation. HPLC studies implied that both the dyes and antibiotics were degraded to the maximum extent. The plausible photocatalytic mechanism on the basis of experimental results was suggested.

本文中，我们报道了通过一步水热法合成新型的氮掺杂还原型氧化石墨烯/ BiVO ₄光催化剂。利用XRD，N ₂吸附-解吸，拉曼，XPS，SEM TEM，DRS-UV和EIS技术对催化剂的理化性质进行了表征。测试了合成的催化剂在可见光照射下对某些有害纺织染料（亚甲基蓝和刚果红）和抗生素（甲硝唑和氯霉素）光降解的催化活性。由于BiVO ₄和N-rGO之间的协同作用，降低了电荷重组并增强了光催化活性。BiVO ₄的降解效率/ N-rGO在CR和MB的降解中非常高，在可见光照射下分别为95％和98％。同样，在可见光照射下95％的MTZ和93％的CAP降解。HPLC研究表明染料和抗生素均被最大程度地降解。根据实验结果，提出了合理的光催化机理。