Two hybrid Au-ZnO aggregates with different hierarchical structures: A comparable study in photocatalysis
Two hybrid Au-ZnO aggregates with different hierarchical structures: A comparable study in photocatalysis
复制标题
两种具有不同层次结构的杂化Au-ZnO聚集体：光催化的比较研究
DOI：
10.1016/j.jcis.2017.08.077
复制
发表时间：
2018-01-01
影响因子：
9.9
通讯作者：
Che, Renchao
中科院分区：
文献类型：
--
作者：
Cheng, Yi-Feng;Jiao, Wenling;Che, Renchao
Two hierarchical ZnO micro/nano-materials have been prepared by a short-time (45 min) hydrothermal reaction without any surfactants. The different morphologies have been characterized comprehensively by XRD, SEM, TEM and XPS technologies. The hierarchical micro- and nano-structures are respectively consisted by the subordinate nano-pieces and nano-hexagonal-rods. Under the illumination of the simulated solar light, the nano-piece-aggregate spends 40 min to degrade the 98% of rhodamine 6G solution (10(-5) mol/L), whereas the nano-rod-aggregate only degrades the 78% of the solution in the same condition. Moreover, the photocatalytic performances of the two ZnO aggregates are significantly improved by loading with Au nanoparticles (NPs) in the same assembly process. The nano-piece-aggregate decorated with the Au NPs spends 24 min to decompose the rhodamine 6G solution completely, while nano-rod aggregate decorated with the Au NPs needs 28 min. The related photocatalytic mechanisms are proposed in this paper. (C) 2017 Elsevier Inc. All rights reserved.
