In this work,we carried out both theoretical calculation and experimental studies to reveal the contribution of hollow geometry to the light utilization efficiency of the TiO_2 photocatalysts in diluted aqueous soluti...In this work,we carried out both theoretical calculation and experimental studies to reveal the contribution of hollow geometry to the light utilization efficiency of the TiO_2 photocatalysts in diluted aqueous solution.It is found that the single or multi-shelled hollow structures do not induce significant multiple reflections within the shells as widely believed in previous reports,and therefore the geometric factor has minimal contribution to the improvement of the light utilization efficiency of the photocatalyst.To design TiO_2 photocatalysts with higher activity,it is more appropriate to focus on the improvement of the crystallinity,diffusion,surface area,and dispersity of the catalysts,rather than their geometric shapes.展开更多
基金support from the U.S.Department of Energy,Office of Science,Basic Energy Sciences,Chemical Sciences,Geosciences,&Biosciences(CSGB)Division(DE-SC0002247)support from the National Natural Science Foundation of China(21501081,21571089,and 21401091)the Fundamental Research Funds for the Central Universities(SWU116010 and lzujbky-2015-19)
文摘In this work,we carried out both theoretical calculation and experimental studies to reveal the contribution of hollow geometry to the light utilization efficiency of the TiO_2 photocatalysts in diluted aqueous solution.It is found that the single or multi-shelled hollow structures do not induce significant multiple reflections within the shells as widely believed in previous reports,and therefore the geometric factor has minimal contribution to the improvement of the light utilization efficiency of the photocatalyst.To design TiO_2 photocatalysts with higher activity,it is more appropriate to focus on the improvement of the crystallinity,diffusion,surface area,and dispersity of the catalysts,rather than their geometric shapes.
