Ordered magnetic core–manganese oxide shell nanostructures and their application in water treatment
- 14 August 2009
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 19 (38), 7030-7035
- https://doi.org/10.1039/b912767d
Abstract
In this paper, we have reported a facile method for the synthesis of ordered magnetic core–manganese oxide shell nanostructures. The process included two steps. First, manganese ferrite nanoparticles were obtained through a solvothermal method. Then, the manganese ferrite nanoparticles were mixed directly with KMnO4 solution without any additional modified procedures of the magnetic cores. It has been found that Mn element in the core can react with KMnO4 to form manganese oxide which acts as a seed for the in-situgrowth of manganese oxide shells. This is significant for the controllable fabrication of symmetrical ordered manganese oxide shell structures. The shell thickness can be easily controlled through the reaction time. Transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray powder diffraction and energy-dispersive X-ray spectroscopy have been employed to characterize the products at different reaction time. The magnetic materials can be used as absorbents in wastewater treatment and exhibit a strong capability to remove organic pollutants. Furthermore, the materials are superparamagnetic and exhibit relative high saturation magnetization at room temperature, which makes the separation procedure more convenient in wastewater treatment.Keywords
This publication has 41 references indexed in Scilit:
- A General Route to Construct Diverse Multifunctional Fe3O4/Metal Hybrid NanostructuresChemistry – A European Journal, 2009
- Intrinsic peroxidase-like activity of ferromagnetic nanoparticlesNature Nanotechnology, 2007
- Development of Magnetic Nanostructured Silica-Based Materials as Potential Vectors for Drug-Delivery ApplicationsChemistry of Materials, 2006
- Biofunctional magnetic nanoparticles for protein separation and pathogen detectionChemical Communications, 2006
- Magnetic nanoparticles for drug deliveryDrug Development Research, 2006
- Controlling Chemical Reactivity at Solid−Solution Interfaces by Means of Hydrophobic Magnetic NanoparticlesLangmuir, 2005
- Magnetic Nanotubes for Magnetic-Field-Assisted Bioseparation, Biointeraction, and Drug DeliveryJournal of the American Chemical Society, 2005
- Magnetic Control of Electrocatalytic and Bioelectrocatalytic ProcessesAngewandte Chemie-International Edition, 2003
- Magnetic Sensors for Protease AssaysAngewandte Chemie-International Edition, 2003
- Magnetic separation techniques in diagnostic microbiologyClinical Microbiology Reviews, 1994