Nanotech 2012 Vol. 3
Nanotech 2012 Vol. 3
Nanotechnology 2012: Bio Sensors, Instruments, Medical, Environment and Energy (Volume 3)

Green Electronics, Chemistry & Materials Chapter 10

Self-assemblies of magnetic nanoparticles (MNPs) and peroxidase enzymes: mesoporous structures and nanoscale magnetic field effects (nano-MFEs) for enhanced activity BioNanoCatalysts (BNCs).

Authors: S.C. Corgié, X. Duan, P. Kahawong, J. Edwards, L.P. Walker, E.P. Giannelis

Affilation: Cornell University, United States

Pages: 728 - 731

Keywords: magnetic nanocatalysis, self assembly, peroxidase, free radical, aromatics

Abstract:
BNCs are self-assembled complexes of magnetic nanoparticles and free-radical producing enzymes, including peroxidases and other oxido-reductases that were shown to have higher activities than their free-enzyme counterparts (up to 30 folds). The BNCs biochemical properties are unique to the complexes. Although, peroxidase-like activities were observed with magnetite nanoparticles themselves, our results demonstrates that it is the complex of the enzymes with the magnetic nanoparticles that is responsible for the enhanced peroxidase activity of the enzyme, acting more specifically on the overall dynamic of the free-radical cofactors. We are therefore reporting a novel enzyme-magnetic nanoparticles system to carry enhanced peroxidase activities for the production of aromatic free-radicals and subsequent peroxidation reactions including polymerization and depolymerization of aromatics. These novel and customable catalysts hence open new opportunities to expand the use and scale of free-radical mediated biochemical reactions for green-chemistry applications including, but not limited to, the remediation of aromatic contaminants in environments and the production lignin-derived high-value chemical feedstocks from lignicellulosics.


ISBN: 978-1-4665-6276-9
Pages: 818
Hardcopy: $209.95