In-Situ sol-gel method of TiO2-reduced graphene oxide as photocatalyst

Hikmah, Utiya, Laila, Alfu Nur, Axala, David Lee Giant, Hastuti, Erna, Aini, Nur and Prasetyo, Anton (2023) In-Situ sol-gel method of TiO2-reduced graphene oxide as photocatalyst. Presented at The 12th International Conference on Green Technology (ICGT 2022), 26-27 Oct 2022, Malang, Indonesia.

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Abstract

Nanocomposites of TiO2-reduced Graphene Oxide were synthesized with graphene oxide (GO) loadings of 4, 8, 12, and 16 mg via in situ sol-gel method. The raw material of graphene oxide was coconut shell charcoal which was processed using a modified Hummer’s method by dissolving the graphite into the acid mixture of H2SO4 and H3PO4. The rGO-TiO2 composites were characterized by X-ray Diffraction (XRD), Inductance, Capacitance & Resistance Meter (LCR-Meter), and UV-Vis. LCR-meter results revealed that the highest electrical conductivity of the sample is 5.37 × 10–6 Scm−1 with a GO composition of 4 mg. XRD analysis results show that the sample was having both anatase and rutile phases with anatase as the dominant phase. The photocatalytic activity of the sample was investigated using a photocatalytic reactor under UV exposure using methylene blue as a pollutant. Composite with GO loading 4 mg resulted in the best percentage of degradation reaching 81.37% in 15 min.

Item Type:	Conference (Paper)
Keywords:	rGO; TiO2; composite; photocatalytic activity
Subjects:	03 CHEMICAL SCIENCES > 0306 Physical Chemistry (incl. Structural) > 030699 Physical Chemistry not elsewhere classified
Divisions:	Faculty of Mathematics and Sciences > Department of Physics
Depositing User:	Utiya Hikmah
Date Deposited:	16 Jun 2023 08:51

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