Synthesis of zinc ferrite/silver iodide composite with enhanced photocatalytic antibacterial and pollutant degradation ability.

Author(s) Xu, Y.; Liu, Q.; Xie, M.; Huang, S.; He, M.; Huang, L.; Xu, H.; Li, H.
Journal J Colloid Interface Sci
Date Published 2018 Oct 15
Abstract

ZnFeO/AgI composites were first prepared successfully with a hydrothermal method, and ZnFeO nanoparticles were uniformly decorated on the surface of AgI particles. The photocatalytic activities of the obtained ZnFeO/AgI composites were investigated by the degradation of organic pollutants and the inactivation of bacteria under visible light irradiation. The results showed that the introduction of ZnFeO greatly enhanced the light harvesting ability and improved the separation efficiency of the photogenerated charge carriers, which contributed to the enhanced generation of reactive species and thus promoted the photocatalytic performance. The 5% ZnFeO/AgI composite exhibited the optimal photocatalytic disinfection of E. coli (100% removal efficiency in 80 min) as well as the photocatalytic degradation of rhodamine B (RhB) (98.5% removal rate in 40 min). Furthermore, four consecutive cycles also demonstrated the stable photocatalytic activity of the as-prepared ZnFeO/AgI composites. In addition, HO was identified as the predominant active species in the photocatalytic inactivation of bacteria. This study indicated that ZnFeO/AgI composites are a promising candidate for the treatment of wastewater.

DOI 10.1016/j.jcis.2018.05.066
ISSN 1095-7103
Citation Xu Y, Liu Q, Xie M, Huang S, He M, Huang L, et al. Synthesis of zinc ferrite/silver iodide composite with enhanced photocatalytic antibacterial and pollutant degradation ability. J Colloid Interface Sci. 2018;528:70-81.

Related Applications, Forms & Industries