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Vol. 110, Issue 11, November 2009, pp. 78-85




Electroanalytical Nanoparticles Electrode Based on NanoTiO2/MWCNTs Mixture


*GANCHIMEG Perenlei, Wee Tee TAN

Department of Chemistry, University Putra Malaysia, 43400 UPM,

 Serdang, Selangor D. E., Malaysia

E-mail: ganaa_p2002@yahoo.com



Received: 10 June 2009   /Accepted:  24 November 2009   /Published:  30 November 2009


Abstract: MWCNTs, nanoTiO2 and nanoTiO2/MWCNTs mixture modified GC electrodes were fabricated by mechanical attachment. Electrochemical performance of the nanoTiO2/MWCNTs/GCE was studied for detection of ascorbic acid in 0.1 M KCl electrolyte solution by cyclic voltammetry (CV). During cyclic voltammetry, the oxidation current of ascorbic acid at MWCNTs/GCE and nanoTiO2/MWCNTs/GCE appeared with enhancement of 1.3 and 1.5 times as compared to bare GCE, respectively. Enhanced oxidation peak of ascorbic acid has shown more resolved at nanoTiO2/MWCNTs/GCE surface. Therefore, it is evident that nanoTiO2/MWCNTs/GCE is a more superior type of modified electrode. The morphology of the nanoTiO2/MWCNTs mixture was characterized before and after electrolysis by scanning electron microscopy (SEM) and Energy dispersive x-ray spectrogram (EDX).


Keywords: MWCNTs, nanoTiO2, nanoTiO2/MWCNTs, Modified GC electrode, Cyclic voltammetry


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