THE DEVELOPMENT OF GLUCOSE SENSOR BASED ON SiO2-CuO MATERIALS USING SCREEN PRINTED CARBON ELECTRODE (SPCE)

Abstract

ABSTRAKTelah dilakukan pengembangan sensor glukosa berbasis material SiO 2 -CuO menggunakan Screen Printed Carbon Electrode (SPCE). Terdapat tiga jenis material yang digunakan untuk mendeteksi glukosa, diantaranya yaitu Multi Wall Carbon Nanotube (MWCNT)-SiO 2 -CuO, SiO 2 -CuO(A) dan SiO 2 -CuO(B). Perbedaan komposisi SiO 2 -CuO (A) dan SiO 2 -CuO (B) terdapat pada penambahan NaOH dalam proses sintesis SiO 2 -CuO (B). Analisis untuk masing-masing material ini dilakukan dengan menggunakan Scanning Electron Microscopy (SEM), metode voltametri siklik dan kronoamperometri. Pada analisis dengan voltametri siklik, digunakan rentang potensial -1-1,5 V dengan elektroda pembanding Ag/AgCl pada laju pindai 100 mV/detik dan pada metode kronoamperometri digunakan 3 potensial terapan yaitu (-0,6), (-0,5) and (-0,4) V dengan durasi analisis selama 5 detik. Dari hasil analisis dengan metode SEM, voltametri siklik dan kronoamperometri didapatkan SiO 2 -CuO(B)sebagai material yang terbaik dan dapat digunakan sebagai pendeteksi glukosa. Kata kunci : glukosa, kronoamperometri, material, SEM, voltametri Siklik ABSTRACTThe development of material-based glucose sensor SiO 2 -CuO using Screen Printed Carbon Electrode (SPCE) had been done. Three types of materials were used to detect glucose, i.e Multi Wall Carbon Nanotube (MWCNT)-SiO 2 -CuO, SiO 2 -CuO (A) dan SiO 2 -CuO (B). The differences composition of SiO 2 -CuO(A) and SiO 2 -CuO(B) occurred during the addition of NaOH in synthesis process of SiO 2 -CuO (B). The prepared materials were analyzed by Scanning Electron Microscopy (SEM), cyclic voltammetry method and chrono-amperometry. Cyclic voltammetry analysis was conducted at a potential range of -1.0 -1.5 V with Ag/AgCl as reference electrode. The scan rate was 100 mV/sec and the potential was varied at (-0.6), (-0.5) and (-0.4) V, in which the duration of each analysis was 5 second. Based on the result of analysis, whether by SEM, cyclic voltammetry and chrono-amperometry, the SiO 2 -CuO (B) was found to be the best material for detection of glucose.