Effects of Mesoporous Silica Addition on Electrochemical Properties of Carbon Electrode
Noramira Saad1, Mohammad Noor Jalil2, Zaini Haryati Mohd Zain3, Hamizah Mohd Zaki4
1Noramira Saad, Faculty of Applied Sciences, University Teknologi MARA, Shah Alam, Selangor Malaysia.
2Mohammad Noor Jalil*, Faculty of Applied Sciences, University Teknologi MARA, Shah Alam, Selangor, Malaysia.
3Zainiharyati Mohd Zain, Faculty of Applied Sciences, University Teknologi MARA, Shah Alam, Malaysia.
4Hamizah Mohd Zaki, Faculty of Applied Sciences, University Teknologi MARA, Shah Alam, Malaysia.
Manuscript received on September 24, 2019. | Revised Manuscript received on October 20, 2019. | Manuscript published on October 30, 2019. | PP: 5913-5917 | Volume-9 Issue-1, October 2019 | Retrieval Number: A3027109119/2019©BEIESP | DOI: 10.35940/ijeat.A3027.109119
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Mesoporous silica is material that possesses the pore sizes between 2 nm to 50 nm which had expanded their applications rapidly. In this study, mesoporous SBA-15 and SBA-16 were synthesized via surfactant templating approach using triblock copolymer as directing agent and tetraethyl orthosilicate (TEOS) as silica source. The synthesized materials were characterized by X-ray diffraction (XRD) spectroscopy, scanning electron microscopy (SEM) and nitrogen absorption-desorption tests. The pore diameters are 5.5 nm and 3.2 nm for SBA-15 and SBA-16 respectively, were determined with BJH method based on adsorption data. Three different electrodes were fabricated, carbon paste electron (CPE) and two modified carbon paste electrodes (MCPE): SBA-15/MPCE and SBA-16/MPCE. The fabricated electrodes were tested using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). SBA-16/MCPE showed better adsorption, enhanced the response signal to 81% and a lower resistance (4.04KΩ). The synthesized mesoporous materials have the potential to be used in the development of high performance, lightweight and flexible devices in electrochemistry.
Keywords: Electrochemical properties, Mesoporous silica, Mesoporous silica-carbon electrode, SBA-15, SBA-16.