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Updated: Jul 20, 2026

Cell Labeling and Targeting with Superparamagnetic Iron Oxide Nanoparticles

Cell Labeling and Targeting with Superparamagnetic Iron Oxide Nanoparticles

Published on: October 19, 2015

Surface-Engineered Super-Paramagnetic Iron Oxide Nanoparticles For Chromium Removal.

Antony V Samrot¹, Chamarthy Sai Sahithya², Jenifer Selvarani A²

¹Department of Biomedical Sciences, Faculty of Medicine and Biomedical Sciences, MAHSA University, Jenjarom, Selangor 42610, Malaysia.

International Journal of Nanomedicine

|October 22, 2019

Summary

Chitosan-coated super-paramagnetic iron oxide nanoparticles (SPIONs) effectively remove chromium from water. These magnetic nanoparticles offer a promising nanotechnology solution for groundwater remediation, retaining magnetic properties post-treatment.

Keywords:

SPIONs adsorption chitosan coating chromium isotherm studies

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Area of Science:

Nanotechnology
Environmental Science
Materials Science

Background:

Heavy metal pollution, particularly chromium, poses a significant threat to freshwater resources.
Super-paramagnetic iron oxide nanoparticles (SPIONs) are biocompatible magnetic materials with potential for environmental remediation.
Surface modification of SPIONs can enhance their pollutant removal capabilities.

Purpose of the Study:

To synthesize and characterize chitosan-coated SPIONs for chromium removal.
To evaluate the efficiency of these modified SPIONs in adsorbing chromium from aqueous solutions.
To investigate the influence of pH on chromium adsorption.

Main Methods:

SPIONs synthesized via co-precipitation and coated with chitosan.
Chromium adsorption efficiency tested using synthesized SPIONs.
Adsorption analyzed using UV-VIS spectrophotometry and isotherm studies.

Main Results:

Stable chitosan-coated SPIONs were successfully synthesized.
Coated SPIONs demonstrated superior chromium adsorption compared to uncoated SPIONs, up to 100 ppm.
Chromium adsorption capacity increased with decreasing pH.

Conclusions:

Surface-modified SPIONs exhibit cumulative adsorption properties.
Chitosan-coated SPIONs retain their magnetic properties after chromium adsorption.
These modified SPIONs represent an effective nanotechnology tool for chromium removal from groundwater.