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https://hdl.handle.net/10316/5285
Título: | Development of electrochemical oxidase biosensors based on carbon nanotube-modified carbon film electrodes for glucose and ethanol | Autor: | Gouveia-Caridade, Carla Pauliukaite, Rasa Brett, Christopher M. A. |
Palavras-chave: | Multi-walled carbon nanotubes; Carbon film electrodes; Glucose oxidase; Alcohol oxidase; Electrochemical biosensor | Data: | 2008 | Citação: | Electrochimica Acta. 53:23 (2008) 6732-6739 | Resumo: | Functionalised multi-walled carbon nanotubes (MWCNTs) were cast on glassy carbon (GC) and carbon film electrodes (CFE), and were characterised electrochemically and applied in a glucose-oxidase-based biosensor. MWCNT-modified carbon film electrodes were then used to develop an alcohol oxidase (AlcOx) biosensor, in which AlcOx-BSA was cross-linked with glutaraldehyde and attached by drop-coating. The experimental conditions, applied potential and pH, for ethanol monitoring were optimised, and ethanol was determined amperometrically at -0.3 V vs. SCE at pH 7.5. Electrocatalytic effects of MWCNT were observed with respect to unmodified carbon film electrodes. The sensitivity obtained was 20 times higher at carbon film/MWCNT-based biosensors than without MWCNT. | URI: | https://hdl.handle.net/10316/5285 | DOI: | 10.1016/j.electacta.2008.01.040 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Química - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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filec0ebe13dcde844f1b727af29296c7308.pdf | 752.23 kB | Adobe PDF | Ver/Abrir |
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