- P-ISSN 1225-0163
- E-ISSN 2288-8985
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- P-ISSN1225-0163
- E-ISSN2288-8985
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A glucose biosensor based on deposition of glucose oxidase onto Au nanoparticles poly(maleic anhydride)-grafted multiwalled carbon nanotube electrode
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2010, v.23 no.2, pp.165-171
https://doi.org/10.5806/AST.2010.23.2.165
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(2010). A glucose biosensor based on deposition of glucose oxidase onto Au nanoparticles poly(maleic anhydride)-grafted multiwalled carbon nanotube electrode. Analytical Science and Technology, 23(2), 165-171, https://doi.org/10.5806/AST.2010.23.2.165
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Abstract
Glucose oxidase (GODox) immobilized biosensor was fabricated by two methods. In one of the methods, gold nanoparticles (Au-NPs) prepared by γ-irradiation were loaded into the poly(maleic anhydride)-grafted multi-walled carbon nanotube, PMAn-g-MWCNT electrode via physical entrapment. In the other method,the Au-NPs were prepared by electrochemical reduction of Au ions on the surface of PMAn-g-MWCNT electrode and then GODox was immobilized into the Au-NPs. The GODox immobilized biosensors were tested for electrocatalytic activities to sense glucose. The sensing range of the biosensor based on the Au-NPs physically modified PMAn-g-MWCNT electrode was from 30 μM to 100 μM for the glucose concentration, and the detection limit was 15 μM. Interferences of ascorbic acid and uric acid were below 7.6%. The physically Au deposited PMAn-g-MWCNT paste electrodes appear to be good sensor in detecting glucose.
- keywords
- maleic anhydride, MWCNT, gold nanoparticles, glucose oxidase, radiation-induced graft polymerization
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