Functionalised zinc oxide nanotube arrays as electrochemical sensors for the selective determination of glucose

Ali, Syed M. Usman; Kashif, Muhammad; Ibupoto, Zafar Hussain; Fakhar-e-Alam, M.; Hashim, U.; Willander, Magnus

doi:10.1049/mnl.2011.0310

Cited by 43 publications

(23 citation statements)

References 47 publications

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“…[20][21][22][23][24][25][26] To summarize, we fabricated a glucose biosensor based on the combination of glucose oxidase and InN QDs. The presented biosensor utilizes the substantial advantages of high surface charge density and low-dimensionality of the InN QDs for highly sensitive and rapid response.…”

Section: -mentioning

confidence: 99%

Highly efficient potentiometric glucose biosensor based on functionalized InN quantum dots

Alvi¹,

Rodriguez

Gómez

et al. 2012

Applied Physics Letters

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We present a fast, highly sensitive, and efficient potentiometric glucose biosensor based on functionalized InN quantum-dots (QDs). The InN QDs are grown by molecular beam epitaxy. The InN QDs are bio-chemically functionalized through physical adsorption of glucose oxidase (GOD). GOD enzyme-coated InN QDs based biosensor exhibits excellent linear glucose concentration dependent electrochemical response against an Ag/AgCl reference electrode over a wide logarithmic glucose concentration range (1 x 10(-5) M to 1 x 10(-2) M) with a high sensitivity of 80mV/decade. It exhibits a fast response time of less than 2 s with good stability and reusability and shows negligible response to common interferents such as ascorbic acid and uric acid. The fabricated biosensor has full potential to be an attractive candidate for blood sugar concentration detection in clinical diagnoses. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4758701]

Funding Agencies|BBVA foundation||

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Section: -mentioning

confidence: 99%

Highly efficient potentiometric glucose biosensor based on functionalized InN quantum dots

Alvi¹,

Rodriguez

Gómez

et al. 2012

Applied Physics Letters

Self Cite

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Funding Agencies|BBVA foundation||

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“…The effect of the coupling agents, (3-aminopropyl) trimethoxysilane, (3-aminopropyl) triethoxysilane, and (3-aminopropyl) methyldiethoxysilane (APS), on the covalent immobilization of GOx on ZnO nanorods was studied [36]. The APS-treated glucose sensor exhibited the highest sensitivity and lowest K M app , which was attributed to the APS-treated ZnO nanowires containing the largest number of C-N Immobilizing GOx on more complex ZnO nanostructures as working electrodes to detect glucose has also been investigated [12,[37][38][39][40][41][42][43]. Yang et al [37] prepared a highly oriented single-crystal ZnO nanotube array (Fig.…”

Section: Science China Materialsmentioning

confidence: 99%

ZnO nanostructures in enzyme biosensors

et al. 2015

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Biosensing has developed tremendously since it was demonstrated by Leland C. Clark Jr. in 1962. ZnO nanomaterials are attractive candidates for fabricating biosensors, because of their diverse range of nanostructures, high electron mobility, chemical stability, electrochemical activity, high isoelectric points which promote enzyme adsorption, biocompatibility, and piezoelectric properties. This review covers ZnO nanostructures applied in enzyme biosensors, in the light of electrochemical transduction and field effect transduction. Different assembly processes and immobilization methods have been used to load enzymes into various ZnO nanostructures, providing enzymes with favorable micro-environments and enhancing their sensing performance. We briefly describe recent trends in ZnO syntheses, and the analytical performance of the fabricated biosensors, summarize the advantages of using ZnO nanostructures in biosensors, and conclude with future challenges and prospects.

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“…The recorded potential at the electrode-electrolyte interface is then used to quantify the activity (upon concentration change) of glucose in the reaction, according to the fundamentals of potentiometric sensors [47,48]. For the direct potentiometric measurements of the analyte ion concentration, Nernst relationship can be a crosscheck which relates the observed potential with the change in concentration [47][48][49][50].…”

Section: The Calibration Curvementioning

confidence: 99%