Fabrication of rod-shaped β-FeOOH: the roles of polyethylene glycol and chlorine anion  

作　　者：Xuejiao Wei Xiaoling Mou Yan Zhou Yong Li Wenjie Shen 

机构地区：[1]State Key Laboratory of Catalysis [2]Dalian Institute of Chemical Physics, Chinese Academy of Sciences

出　　处：《Science China Chemistry》2016年第7期895-902,共8页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (21025312, 21303193, 21321002);the National Key Basic Research Program of China (2013CB933100)

摘　　要：β-FeOOH nanorods of 40 nm wide and 450 nm long were fabricated through precisely regulating the hydrolysis kinetics of Fe3＋ in polyethylene glycol and the concentration of C1- as the structure-directing agent. Detailed structural and chemical analyses of the intermediates during the synthesis identified that the strong interaction between PEG and Fe3＋ modulated the hydrolysis kinetics of Fe3＋and prevented the aggregation of β-FeOOH nanorods; while C1- provided sufficient nucleation sites, stabilized the hollow channel of β-FeOOH, and more importantly induced the growth of the nanorods along [001] direction.β-FeOOH nanorods of 40 nm wide and 450 nm long were fabricated through precisely regulating the hydrolysis kinetics of Fe^(3+) in polyethylene glycol and the concentration of Cl^- as the structure-directing agent. Detailed structural and chemical analyses of the intermediates during the synthesis identified that the strong interaction between PEG and Fe^(3+) modulated the hydrolysis kinetics of Fe^(3+) and prevented the aggregation of β-FeOOH nanorods; while Cl^- provided sufficient nucleation sites, stabilized the hollow channel of β-FeOOH, and more importantly induced the growth of the nanorods along [001] direction.

关 键 词：β-FeOOH NANORODS hydrolysis kinetics capping agent anisotropic growth 

分 类 号：TB383.1[一般工业技术—材料科学与工程]