Monodisperse α-Fe2O3 Mesoporous Microspheres: One-Step NaCl-Assisted Microwave-Solvothermal Preparation, Size Control and Photocatalytic Property
Open Access
- 18 August 2010
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nanoscale Research Letters
- Vol. 6 (1), 1
- https://doi.org/10.1007/s11671-010-9742-7
Abstract
A simple one-step NaCl-assisted microwave-solvothermal method has been developed for the preparation of monodisperse α-Fe2O3 mesoporous microspheres. In this approach, Fe(NO3)3 · 9H2O is used as the iron source, and polyvinylpyrrolidone (PVP) acts as a surfactant in the presence of NaCl in mixed solvents of H2O and ethanol. Under the present experimental conditions, monodisperse α-Fe2O3 mesoporous microspheres can form via oriented attachment of α-Fe2O3 nanocrystals. One of the advantages of this method is that the size of α-Fe2O3 mesoporous microspheres can be adjusted in the range from ca. 170 to ca. 260 nm by changing the experimental parameters. High photocatalytic activities in the degradation of salicylic acid are observed for α-Fe2O3 mesoporous microspheres with different specific surface areas.Keywords
This publication has 38 references indexed in Scilit:
- Iron oxide hollow spheres: Microwave–hydrothermal ionic liquid preparation, formation mechanism, crystal phase and morphology control and propertiesActa Materialia, 2009
- Controllable Fabrication, Growth Mechanisms, and Photocatalytic Properties of Hematite Hollow SpindlesThe Journal of Physical Chemistry C, 2009
- Microwave synthesis and characterization of ZnO with various morphologiesMaterials Letters, 2008
- Template-Free Synthesis and Photocatalytic Properties of Novel Fe2O3 Hollow SpheresThe Journal of Physical Chemistry C, 2007
- Templated synthesis of hierarchically porous manganese oxide with a crystalline nanorod framework and its high electrochemical performanceJournal of Materials Chemistry, 2007
- Monodisperse Magnetic Single‐Crystal Ferrite MicrospheresAngewandte Chemie, 2005
- Two‐ and Three‐Dimensional Mesoporous Iron Oxides with Microporous WallsAngewandte Chemie, 2004
- Ruthenium Nanoparticles: Size, Shape, and Self-AssembliesChemistry of Materials, 2002
- Synthesis and magnetic properties of decamethylsamarocene composites of mesoporous niobium oxideJournal of Materials Chemistry, 2002
- Photocatalytic oxygen evolution on α-Fe2O3 films using Fe3+ ion as a sacrificial oxidizing agentPhysical Chemistry Chemical Physics, 2000