LAUSR

Abstract Novel Fe3O4-C3N4-Ag2MoO4 series photocatalysts were designed and successfully synthesized. UV–vis diffuse reflectance spectra (DRS) indicated that the Fe3O4-C3N4-Ag2MoO4 ternary system efficiently enlarged the light absorption range from 360 nm to 550 nm in comparison with that of pristine Ag2MoO4. The hydroxyl radicals ( OH) probe experiment suggested that the formation of C3N4-Ag2MoO4 heterojunction efficiently produced the powerful OH, and the load of Fe3O4 further increased the amount of OH. The photocatalytic performances of as-prepared samples were evaluated by degrading 4-Chlorophenol (4-CP), which only can be degraded in the presence of OH radicals. The degradation results suggested that Fe3O4-C3N4-Ag2MoO4 ternary system showed outstanding photocatalytic performance in comparison with that of C3N4-Ag2MoO4, and inactive Ag2MoO4. The mechanism of enhanced OH productivity was also discussed. This study proved that novel Fe3O4-heterojunction system could efficiently enhance the light harvesting and the productivity of OH, which could be a potential strategy for enhancing the photocatalytic performance.