文献类型：期刊文献

英文题名：Preparation of flower-like ZnO architectures assembled with nanosheets for enhanced photocatalytic activity

作者：Miao, Yu[1];Zhang, Haijiao[1];Yuan, Shuai[3];Jiao, Zheng[1];Zhu, Xuedong[2]

机构：[1]Shanghai Univ, Sch Environm & Chem Engn, Inst Nanochem & Nanobiol, Shanghai 200444, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]Shanghai Univ, Res Ctr Nanosci & Nanotechnol, Shanghai 200444, Peoples R China

年份：2016

卷号：462

起止页码：9

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;EI(收录号：20154101352490);WOS:【SCI-EXPANDED(收录号:WOS:000365143700002)】；

基金：The authors are thankful for funding from the National Natural Science Foundation of China (11275121 and 21471096), and Program for Innovative Research Team in University (IRT13078).

语种：英文

外文关键词：ZnO; Flower-like; Architectures; Formation mechanism; Photocatalytic activities

摘要：As an important semiconductor metal oxide, various methods have been developed for preparation of ZnO architectures owing to their excellent properties and extensive applications. In this paper, two kinds of 3D flower-like ZnO architectures assembled with numerous nanosheets were successfully synthesized by a simple hydrothermal route assisted by sodium dodecyl sulfate (SDS), origining from the different alkali environment created by urea and hexamine (HMT). SEM and TEM results revealed that the two products had hydrangea-like and rose-like nanostructures with uniform particle sizes, respectively. XRD results confirmed that the growth process of ZnO involved a phase transformation from intermediate compound basic zinc carbonate to ZnO. Base on the experimental results, the formation mechanisms of two kinds of flower-like ZnO undergoing nucleation, oriented growth and self-assembly processes were discussed. The photocatalytic results indicated that both samples exhibited high photocatalytic activities and good cycling stability for the degradation of rhodamine B (RhB), which was almost completely degraded within 25 min, in comparison to those milled samples (above 45 min). The excellent performances were mainly ascribed to their unique nanostructure, good stability, and uniform particle size. (C) 2015 Elsevier Inc. All rights reserved.