Abstract
Nowadays, Carbon Capture and Conversion (CCC) method is one of the alternative solutions in carbon management. The reduced graphene oxide-Titanium (rGO-TiO2) composites are the CCC material that will capture the carbon dioxide (CO2) 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-TiO2 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-TiO2 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 TiO2 to rGO better compared to rGO-TiO2 synthesized via solvothermal. The green synthesis method which requires a low equipment cost and simple experimental steps is the contribution of this research finding.
Highlights
Current energy infrastructures which mostly depend on fossil fuels release greenhouse gases (GHG) and lead to the global warming
We found that the solvothermal and hydrothermal method are the good synthesis method due to their availability and low raw material cost, low equipment cost and the simple and scalable experimental step
The growth and properties of rGO-TiO2 composites which were synthesized by three different conditions: (S), (H1) and (H2) have been successfully studied
Summary
Current energy infrastructures which mostly depend on fossil fuels release greenhouse gases (GHG) and lead to the global warming. This CCC method will convert the captured CO2 into a renewable energy product such as methane, ethane, ethylene and methanol This new alternative is promptly able to meet the global energy demand without any fossil fuels shortages and has a high potential energy source since CO2 is green, abundant, nontoxic and an inexpensive feedstock [4] [5]. Since this method is new and not commercial yet, some improvements need to be done. The highly efficient CCC materials synthesized via a green method with a low equipment cost and simple experimental steps are the ultimate goals in this research work
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