Hierarchical heterostructures of p-type BioCl nanosheets on electrospun n-type TiO2 nanofibers with enhanced photocatalytic activity

摘要

Hierarchical heterostructures of p-type BiOCl nanosheets-type TiO2 nanofibers (p-BiOCl-TiO2 HHs) were prepared by combining the electrospinning technique and solvothermal method. BiOCl nanosheets with exposed (001) facets were densely and uniformly grown on the electrospun TiO2 nanofibers. The obtained p-BiOCl-TiO2 HHs exhibited enhanced UV-light photocatalytic activity due to the effects of p-n heterojunctions and high surface areas. Experiments proved that the generation rate of hydroxyl radicals for p-BiOCl-TiO2 HHs was much larger than that of TiO2 nanofibers. Moreover, the p-BiOCl-TiO2 HHs could be recycled easily by sedimentation because of their nanofibrous nonwoven web structure. (C) 2015 Elsevier B.V. All rights reserved.