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PREPARASI DAN KARAKTERISASI ELEKTROKATALIS MnO2-TiO2/C DENGAN VARIASI KARBON (VULCAN, BINCHOTAN, VULCAN/PANI) SEBAGAI MATERIAL ELEKTRODA UNTUK DETEKSI METANOL

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This study aimed to develop and evaluate the performance of MnO₂–TiO₂/C composite electrodes as electrochemical sensors for methanol detection using different carbon materials, namely Vulcan carbon, binchotan carbon, and Vulcan carbon modified with polyaniline (PANI). XRD analysis confirmed the presence of crystalline MnO₂ and TiO₂ phases at 2θ angles of 28.6° and 25.3°, respectively, along with amorphous carbon, while SEM results showed that the MnO₂–TiO₂/C Vulcan/PANI electrode had the smallest interparticle distance (0.2–0.5 μm), enhancing charge transfer. Electrochemical performance tests using Cyclic Voltammetry (CV) and Linear Sweep Voltammetry (LSV) in Na₂SO₄ electrolyte produced broadened voltammograms, indicating a non-Faradaic detection mechanism dominated by methanol adsorption. The MnO₂–TiO₂/C Vulcan electrode exhibited the highest slope value (4 × 10⁻⁶) and high peak current, whereas the MnO₂–TiO₂/C Vulcan/PANI electrode demonstrated the most stable response with the highest coefficient of determination (R² = 0.9876) and the best linearity within the potential range of 0.0–0.7 V, supported by high correlation values (r = 0.9968 and R² = 0.9937) and a slope of 7 × 10⁻⁸. Keywords : Electrochemical sensor, Methanol, MnO₂-TiO₂, Carbon, PANI.

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Series Title

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Call Number

T1943662026

Publisher

Indralaya : Prodi Ilmu Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sriwijaya., 2026

Collation

xv, 79 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

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Classification

541.370 7

Content Type

Text

Media Type

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Carrier Type

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Edition

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Subject(s)

Elektrokimia
Prodi Ilmu Kimia

Specific Detail Info

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Statement of Responsibility

TUTI

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