One-step in situ formation of 3D hollow sphere-like V2O5 incorporated Ni3V2O8 hybrids with enhanced photocatalytic performance

3-D hollow sphere-like Ni 3 V 2 O 8 immobilizing V 2 O 5 nanoparticles were successfully synthesized via in situ recrystallization method without any template. The compact contact between V 2 O 5 and Ni 3 V 2 O 8 ensuring the photo-inducted carriers fast transport, which would be beneficial for inhibiting recombination rate of electron-hole ( e - /h + ) pairs. Moreover, the hollow sphere-like structure composed of the smaller nanoparticle could effectively improve of visible light capture capacity (multiple scattering for hollow architectures). Benefiting the synergistic promoting effect of the suitable heterojunction and the fascinating 3D hollow feature, the V 2 O 5 @Ni 3 V 2 O 8 indicated significantly degradation performance when evaluated as photocatalyst for degradation antibiotics and chlorophenols under visible light irradiation. Impressively, the 2-V 2 O 5 @Ni 3 V 2 O 8 heterojunction deliver the optimal degradation efficiency for TC (OTC) and 2,4-DCP (4-CP) were 90.0% (~   91.2%) and 92.6% (~   90.0%), respectively. The appearance mechanism for the enhancement photocatalytic performance was also elucidated in detail. The facile strategy provides a novel insight into the designing of the photocatalyst with advantages of charges separation and light-harvesting for degradation of contaminants in wastewater.