Synthesis of Reduced Graphene Oxide-Titanium (rGO-TiO<sub>2</sub>) Composite Using a Solvothermal and Hydrothermal Methods and Characterized via XRD and UV-Vis

Abstract

Nowadays, Carbon Capture and Conversion (CCC) method is one of the alternative solutions in carbon management. The reduced graphene oxide-Titanium (rGO-TiO 2 ) composites are the CCC material that will capture the carbon dioxide (CO 2 ) and convert it into hydrocarbon fuels such as methane. The effect of synthesizing method into crystallinity growth and the band gap will be studied in this research work. Therefore, the rGO-TiO 2 will be synthesized via solvothermal and hydrothermal methods and then will be characterized via XRD and UV-Vis. The temperature and treatment time were fixed in both synthesis methods. The characterization results via XRD and UV-Vis conclude that, the different synthesis methods affected the crystallinity growth and its band gap. The rGO-TiO 2 synthesized via modified hydrothermal method shows the lowest crystallite size and band gap compared to other samples. It will indirectly affect the photogenerated electrons on TiO 2 to rGO better compared to rGO-TiO 2 synthesized via solvothermal. The green synthesis method which requires a low equipment cost and simple experimental steps is the contribution of this research finding.

Sintesis Titanium Oksida/Reduced Graphene Oxide (TiO2/rGO) untuk Fotokatalisis Bahan Pewarna Metilen Biru

“…Hasil yang diperoleh menyatakan bahwa puncak difraksi dari rGO tidak terdeteksi karena terlindungi pucak utama dari TiO2 anatase pada puncak difraksi 25,1°. Tetapi komposit yang dihasilkan murni dan mengkristal dengan baik dan tidak terdeteksi puncak difraksi senyawa lain [22][23].…”

Morphological Structures and Self-Cleaning Properties of Nano-TiO2 Coated Cotton Yarn at Different Washing Cycles

“…The photoreaction activity of the TiO 2 can be enhanced by various factors, such as crystallinity, morphology, and surface area [ 11 ]. The large band gap of titanium dioxide, which is around 3.0 to 3.2 electron volts, affects its light absorption ability [ 12 , 13 ]. Due to its surface area and size, it can only absorb a short wavelength of light, which falls in the UV region.…”

Development of Rapid Dispense-Printed Flexible Interdigitated Electrode Modified with rGO-TiO2 Nanohybrid for Glucose Detection

“…Meanwhile, the normalized resistance of the IDE sensors degrades slightly more to 7% during bending with deviation of 3.1%. With rGO-TiO 2 is known to have strong mechanical strength and electrochemically stable, 64,65 the device is not significantly affected by the bending condition owing to the tight Ti-O-C bond 66 hence demonstrating feasibility for flexible application. However, it can be implied that the performance deterioration may be caused by denaturation of GO x activity 12 or exposure of rGO-TiO 2 to ambient air due to the devices' absorbing properties 46 .…”