Self-assembly synthesis of LAPO4 hierarchical hollow spheres with enhanced photocatalytic CO2-reduction performance  

作　　者：Bao Pan Yangen Zhou Wenyue Su Xuxu Wang 

机构地区：[1]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China

出　　处：《Nano Research》2017年第2期534-545,共12页纳米研究（英文版）

摘　　要：Urchin-like LaPO4 hollow spheres were successfully synthesized by a facile solution route using citric acid （CA） as a structure-directing agent. The size of the three-dimensional （3D） hollow spheres was tuned by changing the concentration of CA. The formation mechanism of the 3D LaPO4 hollow spheres was revealed by studying the time-dependent morphology evolution process. Importantly, compared with monodispersed one-dimensional （1D） LaPO4 nanorods, the 3D LaPO4 hollow spheres self-assembled from nanorods showed a 6.8-fold enhancement in photocatalytic activity for CO2 reduction, which is attributed to the synergistic effect of their hierarchical hollow structure, higher light-harvesting capacity, and faster electron transfer. Our findings provide not only a simple, facile method for the synthesis of hierarchical hollow micro/nanoarchitectures but also an efficient route for enhancing the photocatalytic performance.Urchin-like LaPO4 hollow spheres were successfully synthesized by a facile solution route using citric acid （CA） as a structure-directing agent. The size of the three-dimensional （3D） hollow spheres was tuned by changing the concentration of CA. The formation mechanism of the 3D LaPO4 hollow spheres was revealed by studying the time-dependent morphology evolution process. Importantly, compared with monodispersed one-dimensional （1D） LaPO4 nanorods, the 3D LaPO4 hollow spheres self-assembled from nanorods showed a 6.8-fold enhancement in photocatalytic activity for CO2 reduction, which is attributed to the synergistic effect of their hierarchical hollow structure, higher light-harvesting capacity, and faster electron transfer. Our findings provide not only a simple, facile method for the synthesis of hierarchical hollow micro/nanoarchitectures but also an efficient route for enhancing the photocatalytic performance.

关 键 词：C02 reduction PHOTOCATALYSIS LAPO4 hierarchical hollow spheres 

分 类 号：O[理学]