The recycling technology of photocatalyst powdery has hardly been mature in the photocatalytic oxidation so far.In this work,the hollow TiO_(2)microspheres with an appropriate thickness are confined in carbon microsph...The recycling technology of photocatalyst powdery has hardly been mature in the photocatalytic oxidation so far.In this work,the hollow TiO_(2)microspheres with an appropriate thickness are confined in carbon microspheres(CMSs)to form hollow TiO_(2)@CMSs,which are physically integrated with carbon-fiber textile by van der Waals(vdW)interactions to generate separable and recyclable hollow TiO_(2)@CMSs/carbon-fiber vdW heterostructures.Such separable and recyclable heterostructures show remarkable oxidation of 2,4-dinitrophenol.From our detailed characterization and density functional theory(DFT)calculations,we found that carbon fiber can trap electrons exerted from the excitation of hollow TiO_(2)@CMSs and creates holes in hollow TiO_(2)microspheres,which endow the carbon fiber with photocatalytic activity through coherent charge injection.This study indicates that our general strategy for the fabrication of hollow TiO_(2)@CMSs/carbon-fiber vdW heterostructures can be used as separable and recyclable photocatalyst and photoelectrocatalyst with potential industrial applications in environmentrelated fields.展开更多
基金financial support from the National Natural Science Foundation of China(Grant No.:51464020)
文摘The recycling technology of photocatalyst powdery has hardly been mature in the photocatalytic oxidation so far.In this work,the hollow TiO_(2)microspheres with an appropriate thickness are confined in carbon microspheres(CMSs)to form hollow TiO_(2)@CMSs,which are physically integrated with carbon-fiber textile by van der Waals(vdW)interactions to generate separable and recyclable hollow TiO_(2)@CMSs/carbon-fiber vdW heterostructures.Such separable and recyclable heterostructures show remarkable oxidation of 2,4-dinitrophenol.From our detailed characterization and density functional theory(DFT)calculations,we found that carbon fiber can trap electrons exerted from the excitation of hollow TiO_(2)@CMSs and creates holes in hollow TiO_(2)microspheres,which endow the carbon fiber with photocatalytic activity through coherent charge injection.This study indicates that our general strategy for the fabrication of hollow TiO_(2)@CMSs/carbon-fiber vdW heterostructures can be used as separable and recyclable photocatalyst and photoelectrocatalyst with potential industrial applications in environmentrelated fields.
