ZnO-based photocatalytic materials have received widespread attention due to their usefulness than other photocatalytic materials in organic dye wastewater treatment.However,its photocatalytic efficiency and surface s...ZnO-based photocatalytic materials have received widespread attention due to their usefulness than other photocatalytic materials in organic dye wastewater treatment.However,its photocatalytic efficiency and surface stability limit further applicability.This paper uses a one-step carbonization method to prepare multifunctional ZnO/carbon hybrid nanofiber mats.The carbonization creates aπ-conjugated carbonaceous structure of the mats,which prolongs the electron recovery time of ZnO nanoparticles to yield improved photocatalytic efficiency.Further,the carbonization reduces the fiber diameter of the carbon hybrid nanofiber mats,which quadruples the specific surface area to yield enhanced adsorption and photocatalytic performance.At the same time,the prepared nanofiber mats can increase the evaporation rate of water under solar irradiation to a level of 1.46 kg·m^(-2)·h^(-1)with an efficiency of 91.9%.Thus,the nanofiber mats allow the facile incorporation of photocatalysts to clean contaminated water through adsorption,photodegradation,and interfacial heat-assisted distillation mechanisms.展开更多
基金supported by the National Key Research and Development Program of China(Grant No.2016YFB 0303000)the New Materials Research Key Program of Tianjin(Grant No.16ZXCLGX00090).
文摘ZnO-based photocatalytic materials have received widespread attention due to their usefulness than other photocatalytic materials in organic dye wastewater treatment.However,its photocatalytic efficiency and surface stability limit further applicability.This paper uses a one-step carbonization method to prepare multifunctional ZnO/carbon hybrid nanofiber mats.The carbonization creates aπ-conjugated carbonaceous structure of the mats,which prolongs the electron recovery time of ZnO nanoparticles to yield improved photocatalytic efficiency.Further,the carbonization reduces the fiber diameter of the carbon hybrid nanofiber mats,which quadruples the specific surface area to yield enhanced adsorption and photocatalytic performance.At the same time,the prepared nanofiber mats can increase the evaporation rate of water under solar irradiation to a level of 1.46 kg·m^(-2)·h^(-1)with an efficiency of 91.9%.Thus,the nanofiber mats allow the facile incorporation of photocatalysts to clean contaminated water through adsorption,photodegradation,and interfacial heat-assisted distillation mechanisms.
