STUDY OF POTENTIAL APPLICATION OF CUBTC AND CUBDC TYPE METAL-ORGANIC FRAMEWORKS (MOFS) AS ELECTROCHEMICAL SENSOR MATERIAL

• Main Author: Syahidah Al-ausath, Najmah
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/52133
• Institution: Institut Teknologi Bandung

CuBTC type Metal-Organic Framework (MOFs) which has 3D structure is one of the most reported types of MOFs as an electrochemical sensor material, while CuBDC which has similar properties but has lamellar structure (2D) is still rarely reported. The use of thinner and smaller lamellar structure is known to reduce the electrical resistance of less conductive materials. Therefore, in this study, the potential applications of the CuBDC and CuBTC are compared as a sensing material for dihydroxybenzene isomers (DBI) and glucose by adding them to carbon paste electrodes and it is expected that CuBDC will have better performance. DBI (hydroquinone, catechol, and resorcinol) which has high toxicity is difficult to degrade and often found in the waste of cosmetics, dyes, pesticides and pharmaceutical industries. Thus, it is important to analyze it. Meanwhile, glucose levels are important as a monitor for diagnosis and control of diabetes mellitus. CuBDC and CuBTC were synthesized by solvothermal method and characterized by PXRD and FT-IR. PXRD and FT-IR analysis showed that the two type of MOFs were successfully synthesized. At a weight ratio of 6.3: 0.7: 3 (graphite: MOFs: paraffin), CuBDC shows lower LoD (63.169 µM (HQ); 137.318 µM (CC)) than CuBTC (237.360 µM (HQ); 176.649 µM (CC)) for simultaneous measurement of hydroquinone and catechol. Voltammograms of hydroquinone and catechol are reversible while resorcinol’s is irreversible. The addition of CuBDC and CuBTC to CPE increased the sensitivity of DBI and glucose analysis. CPE/CuBTC shows better performance than CPE/CuBDC on qualitative glucose analysis by CV. Based on the research, MOFs CuBDC has potential application as a sensor material for dihydroxybenzene while CuBTC has potential application as glucose sensor material.