Issue 8, 2012

α-Fe2O3 hierarchically nanostructured mesoporous microspheres: Surfactant-free solvothermal combined with heat treatment synthesis, photocatalytic activity and magnetic property

Abstract

A surfactant-free solvothermal combined with heat treatment method is reported to prepare α-Fe2O3 hierarchically nanostructured mesoporous microspheres. Firstly, a surfactant-free solvothermal method is adopted to prepare the precursors of ferrous tartrate (C4H4O6Fe) hierarchical microspheres using Fe(NO3)3 and tartaric acid in dimethylformamide (DMF) or in mixed solvents of water and DMF at 180 °C for 18 h. The morphology and size of the precursors of ferrous tartrate can be controlled through adjusting the experimental conditions. Secondly, by means of heat treatment of the precursors at 400 or 500 °C for 3 h, the precursors are transformed to α-Fe2O3 hierarchically nanostructured mesoporous microspheres. The α-Fe2O3 hierarchically nanostructured mesoporous microspheres exhibit high photocatalytic activities over salicylic acid. Relatively high coercivity values are obtained for α-Fe2O3 hierarchically nanostructured mesoporous microspheres. The α-Fe2O3 hierarchically nanostructured mesoporous microspheres reported herein have a potential application in a variety of areas such as catalysis.

Graphical abstract: α-Fe2O3 hierarchically nanostructured mesoporous microspheres: Surfactant-free solvothermal combined with heat treatment synthesis, photocatalytic activity and magnetic property

Article information

Article type
Paper
Submitted
03 Nov 2011
Accepted
20 Dec 2011
First published
01 Feb 2012

CrystEngComm, 2012,14, 2702-2710

α-Fe2O3 hierarchically nanostructured mesoporous microspheres: Surfactant-free solvothermal combined with heat treatment synthesis, photocatalytic activity and magnetic property

J. Xu and Y. Zhu, CrystEngComm, 2012, 14, 2702 DOI: 10.1039/C2CE06473A

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