Amoi, Lely (2026) Sintesis Komposit Silika Karbon dari Limbah Sabut Kelapa dan Dicalite Diatomite dengan Menggunakan Metode Pertukaran Ion. Undergraduate thesis, UPN VETERAN JAWA TIMUR.
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Abstract
This research aimed to synthesise sustainable silica–carbon composites derived from coconut coir and dicalite diatomite using an ion-exchange-assisted sol–gel method and to evaluate the effects of gel-forming pH and carbonisation temperature on the resulting composite characteristics. The investigated parameters included gel formation pH 5 and carbonization temperature (400–800 °C). FTIR, XRD, and SEM–EDX analyses were applied to determine functional groups, phase structure, elemental composition, and surface morphology. The results revealed that the composite synthesised at pH 5 and carbonised at 800 °C exhibited the optimal structural properties. This condition produced a homogeneous morphology, balanced silica–carbon integration, reduced sodium residue, and a stable amorphous phase without crystalline formation. Higher carbonization temperatures enhanced siloxane network condensation and improved interfacial bonding between silica and carbon phases. The synthesis guidelines for silica–carbon composite fabrication should therefore emphasise controlled acidic gel formation and high-temperature carbonisation to produce structurally stable, well-integrated materials suitable for adsorption and environmental applications.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TP Chemical technology > TP155 Chemical engineering | ||||||||
| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||
| Depositing User: | LELY AMOI | ||||||||
| Date Deposited: | 13 Oct 2026 02:47 | ||||||||
| Last Modified: | 13 Oct 2026 06:02 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/60520 |
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