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Multiwalled carbon nanotubes grafted chitosan nanobiocomposite: A prosperous functional nanomaterials for glucose biosensor application |
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| Authors: | Palanisamy GomathiAuthor VitaeMin Kwan KimAuthor Vitae Jung Je ParkAuthor VitaeDhanusuraman RagupathyAuthor Vitae Annamalai RajendranAuthor VitaeSoo Chool LeeAuthor Vitae Jae Chang KimAuthor VitaeSang Hak LeeAuthor Vitae Han Do GhimAuthor Vitae |
| Affiliation: | a Department of Textile System Engineering, Kyungpook National University, Daegu 702-701, South Korea b Department of Advanced Organic Materials Science and Engineering, Kyungpook National University, Daegu 702-701, South Korea c Department of Chemical Engineering, Kyungpook National University, 1370 Sangyeuk-dong, Buk-gu, Daegu 702-701, South Korea d Department of Chemistry, Sir Theagaraya College, Chennai 600021, Tamil Nadu, India e Department of Chemistry, Kyungpook National University, Daegu 702-701, South Korea |
| Abstract: | Multiwalled carbon nanotubes (MWNTs) grafted chitosan (CS) nanowire (NW) was prepared by phase separation method. Glucose oxidase (GOx) was sequentially immobilized into MWNT-CS-NW to obtain MWNT-CS-NW/GOx biosensor. Field emission scanning electron microscopy (FESEM) images of MWNT-CS-NW/GOx reveals the existence of MWNT and CS. Cyclic voltammetry and amperometry were used to evaluate the electrochemical determination of glucose. The MWNT-CS-NW/GOx biosensor shows an excellent performance for glucose at +0.34 V with a high sensitivity (5.03 μA/mM) and lower response time (3 s) in a wide concentration range of 1-10 mM (correlation coefficient of 0.9988). In addition, MWNT-CS-NW/GOx biosensor possesses better reproducibility, storage stability and there is negligible interference from other electroactive components. |
| Keywords: | Glucose Biocompatibility Nanowire Electroactivity MWNT Biosensor |
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