Polyester sulphonic acid interstitial nanocomposite platform for peroxide biosensor

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dc.contributor.authorAl-Ahmed, Amir
dc.contributor.authorNdangili, Peter M.
dc.contributor.authorJahed, Nazeem
dc.contributor.authorBaker, Priscilla
dc.contributor.authorIwuoha, Emmanuel I.
dc.date.accessioned2016-12-22T07:44:12Z
dc.date.available2016-12-22T07:44:12Z
dc.date.issued2009
dc.description.abstractA novel enzyme immobilization platform was prepared on a platinum disk working electrode by polymerizing aniline inside the interstitial pores of polyester sulphonic acid sodium salt (PESA). Scanning electron microscopy study showed the formation of homogeneous sulphonated polyaniline (PANI) nanotubes (~90 nm) and thermogravimetric analysis (TGA) confirmed that the nanotubes were stable up to 230 °C. The PANI:PESA nanocomposite showed a quasi-reversible redox behaviour in phosphate buffer saline. Horseradish peroxidase (HRP) was immobilized on to this modified electrode for hydrogen peroxide detection. The biosensor gave a sensitivity of 1.33 μA (μM)-1 and a detection limit of 0.185 μM for H2O2. Stability experiments showed that the biosensor retained more than 64% of its initial sensitivity over four days of storage at 4 °C.en_US
dc.identifier.citationAl-Ahmed, A. et al. (2009). Polyester sulphonic acid interstitial nanocomposite platform for peroxide biosensor. Sensors, 9: 9965-9976en_US
dc.identifier.issn1424-8220
dc.identifier.urihttp://hdl.handle.net/10566/2476
dc.identifier.urihttp://dx.doi.org/10.3390/s91209965
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.relation.urihttps://creativecommons.org/licenses/by-nc-sa/3.0/
dc.subjectPeroxide biosensorsen_US
dc.subjectElectrochemical polymerisationen_US
dc.subjectPolyaniline nanotubesen_US
dc.subjectPolyester sulphonic aciden_US
dc.titlePolyester sulphonic acid interstitial nanocomposite platform for peroxide biosensoren_US
dc.typeArticleen_US

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