Controlled synthesis and tunable properties of hematite hierarchical structures in a dual-surfactant system

被引：8

作者：

Wang, Lili ^{[1
]}

Gao, Lian ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

CRYSTENGCOMM | 2011年 / 13卷 / 06期

基金：

中国国家自然科学基金;

关键词：

HYDROPHILIC BLOCK-COPOLYMERS; CRYSTAL-GROWTH MODIFIERS; ALPHA-FE2O3; PARTICLES; NANOPARTICLES; NANOCRYSTALS; SUPERSTRUCTURES; ARCHITECTURES; NANOWIRES; SHAPE;

D O I：

10.1039/c0ce00236d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simple hydrothermal synthesis method was reported for the preparation of various hematite hierarchical structures in a dual-surfactant system, such as stalactite-like, cluster-like and coral-like and so on. The mechanism of formation was studied by adjusting the experimental parameters, and it was found that both oleate and citrate played important roles in the process. Citrate is believed to act as an "etching" reagent in our experiment. The samples obtained were dispersed in a water-hexane mixture to study their surface nature by considering the difference in the lypohydrophilic properties of the oleate and citrate groups. Meanwhile, study of their magnetic properties determined that the oleate and citrate played similar roles in influencing a reductive reaction to convert Fe3+ to Fe2+.

引用

页码：1998 / 2005

页数：8

共 57 条

[1] Optical properties of crystalline and non-crystalline iron oxide thin films deposited by spray pyrolysis [J].