title: MWCNT-ruthenium oxide composite paste electrode as non-enzymatic glucose sensor.
abstract: A non-enzymatic glucose sensor of multi-walled carbon nanotube-ruthenium oxide/composite paste electrode (MWCNT-RuO(2)/CPE) was developed. The electrode was characterized by using XRD, SEM, TEM and EIS. Meanwhile, cyclic voltammetry and amperometry were used to check on the performances of the MWCNT-RuO(2)/CPE towards glucose. The proposed electrode has displayed a synergistic effect of RuO(2) and MWCNT on the electrocatalytic oxidation of glucose in 3M NaOH. This was possible via the formation of transitions of two redox pairs, viz. Ru(VI)/Ru(IV) and Ru(VII)/Ru(VI). A linear range of 0.5-50mM glucose and a limit of detection of 33 μM glucose (S/N=3) were observed. There was no significant interference observable from the traditional interferences, viz. ascorbic acid and uric acid. Indeed, results so obtained have indicated that the developed MWCNT-RuO(2)/CPE would pave the way for a better future to glucose sensor development as its fabrication was without the use of any enzyme.
authors: Pusat Pengajian Sains Kimia, Universiti Sains Malaysia, 11800 USM Pulau Pinang, Malaysia.
authors: Ramin M A
authors: RM
authors: Tehrani
authors: Sulaiman
authors: S
authors: Ab Ghani
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation; D055664:Electrochemical Techniques / Q000295:instrumentation*; D004566:Electrodes; D005947:Glucose / Q000032:analysis*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010084:Oxidation-Reduction; D015203:Reproducibility of Results; D017975:Ruthenium Compounds / Q000737:chemistry*; D012680:Sensitivity and Specificity
chemical_list: D037742:Nanotubes, Carbon; D017975:Ruthenium Compounds; C029017:ruthenium dioxide; D005947:Glucose