Tuning Magnetic Nanoparticle Adsorption via Electrostatic Charge Control

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Abstract:

Tuning the charges of Fe3 O4 magnetic nanoparticles were characterized with respect to their particle size, optical lightmode spectroscopy (OWLS) and zeta-potential. In this work, we investigate the influence of charges on the adsorption kinetics of Fe3 O4 magnetic nanoparticles and tune their adsorption onto Si(Ti)O2 under different pH. We show that kinetics and the adsorbed mass depends on the charges, increase with applied ionic strength. Continuous adsorption under different potential charges offers controlling of fabricated nanosurfaces by surface charges. Furthermore, hence relations between macromolecules charged surfaces control many natural and industrial processes, effect of charges were taking to account in this paper.

Keywords: MAGNETIC; MAGNETIC SURFACE CHARGE; NANOPARTICLES; OPTICAL WAVEGUIDE LIGHTMODE SPECTROSCOPY

Document Type: Short Communication

DOI: http://dx.doi.org/10.1166/jbns.2012.1068

Publication date: June 1, 2012

More about this publication?
  • Bionanoscience attempts to harness various functions of biological macromolecules and integrate them with engineering for technological applications. It is based on a bottom-up approach and encompasses structural biology, biomacromolecular engineering, material science, and engineering, extending the horizon of material science. The journal aims at publication of (i) Letters (ii) Reviews (3) Concepts (4) Rapid communications (5) Research papers (6) Book reviews (7) Conference announcements in the interface between chemistry, physics, biology, material science, and technology. The use of biological macromolecules as sensors, biomaterials, information storage devices, biomolecular arrays, molecular machines is significantly increasing. The traditional disciplines of chemistry, physics, and biology are overlapping and coalescing with nanoscale science and technology. Currently research in this area is scattered in different journals and this journal seeks to bring them under a single umbrella to ensure highest quality peer-reviewed research for rapid dissemination in areas that are in the forefront of science and technology which is witnessing phenomenal and accelerated growth.
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