By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Enzymes and Coenzymes have been published. According to news reporting originating from Wollongong, Australia, by NewsRx correspondents, research stated, "Aqueous dispersions of reduced graphene oxide (rGO) and multi walled carbon nanotubes (MWCNT) were fabricated through a modified chemical reduction method. The significant advantage of the method developed here is the omission of any stabilising compound or organic solvent to obtain stable rGO-MWCNT dispersions."
Our news editors obtained a quote from the research from the University of Wollongong, "Significantly biological entities, in this case the enzyme glucose oxidase (GOx), can be successfully incorporated into the dispersion. These dispersions were characterised using XPS, SEM, zeta potential and particle size measurements which showed that the dispersion stability is not sacrificed with the addition of GOx, and significantly, the electrical properties of the rGO and MWCNTs are maintained. In this study, rGO acts as an effective dispersing agent for MWCNTs and does not affect the solubility or electroactivity of the GOx. Bioelectrodes fabricated from these rGO-MWCNT-GOx dispersions were characterised electrochemically to test their feasibility in facilitating direct electron transfer (DET) from the redox centre of the enzyme to the electrode. The DET results showed that the specific catalytic current generated at an optimised rGO-MWCNT-GOx electrode was 72 mu A/mu g GOx, which is 144 times more efficient than other literature values for similar systems."
According to the news editors, the research concluded: "The remarkable specific catalytic current can be attributed to the use of purified enzyme, the efficiency of charge transfer within the rGO-MWCNT composite and the ability of the electrode to facilitate direct electron transfer."
For more information on this research see: Aqueous dispersions of reduced graphene oxide and multi wall carbon nanotubes for enhanced glucose oxidase bioelectrode performance. Carbon, 2013;61():467-475. Carbon can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Carbon - www.elsevier.com/wps/product/cws_home/258)
The news editors report that additional information may be obtained by contacting W. Grosse, University of Wollongong, ARC Center Excellence Electromat Sci, Intelligent Polymer Res Inst, Wollongong, NSW 2522, Australia. Additional authors for this research include J. Champavert, S. Gambhir, G.G. Wallace and S.E. Moulton (see also Enzymes and Coenzymes).
Keywords for this news article include: Wollongong, Fullerenes, Nanotechnology, Glucose Oxidase, Carbon Nanotubes, Emerging Technologies, Enzymes and Coenzymes, Alcohol Oxidoreductases, Australia and New Zealand
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