Abstract:

In order to improve the photocatalytic performance of bismuth vanadate(BiVO4), BiVO4 was loaded on the cationic-dyeable polyester by in-situ growth method. The influence of pH value, reaction temperature and time on the morphology of BiVO4 were also investigated. Surface morphology, crystal form, particle size and optical characteristic were characterized by scanning electron microscope, X-ray diffractometer and ultraviolet-visible spectrophotometer. The photocatalytic activity of the BiVO4-loaded fiber are pH value of 7, reacting temperature of 90°C for 8 h. The degradation ratio of 20 mg/L Reactive Black KN-B solution is approximately 77.2% by the photocatalytic fabric under visible light irradiation condition within 180 min. After being reused for three times, the degradation rate remains 57.3%, and the bursting strength retention remains is 74.8%.

Key words: bismuth vanadate, cationic-dyeable, in-situ growth method, photocatalysis, Reactive Black KN-B