Issue 6, 2011
From the journal:

CrystEngComm

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

Lili Wanga  and  Lian Gao*a  

* Corresponding authors

a State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai
E-mail: liangao@mail.sic.ac.cn

Abstract

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+.

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

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Article information

DOI
https://doi.org/10.1039/C0CE00236D
Article type
Paper
Submitted
27 May 2010
Accepted
03 Dec 2010
First published
23 Dec 2010

CrystEngComm, 2011,13, 1998-2005

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

L. Wang and L. Gao, CrystEngComm, 2011, 13, 1998 DOI: 10.1039/C0CE00236D

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