Production of Methanol as a Fuel Energy from CO2 Present in Polluted Seawater - A Photocatalytic Outlook
CO reduction 2, Cu-C/TiO 2, methanol, Photocatalysis, polluted seawater
The production of methanol by photocatalytic reduction of the CO2 present in the different polluted seawater systems was explored using P-25, C/TiO2, and Cu-C/TiO2 under both UV and sunlight. Both C/TiO2 and Cu-C/TiO2 were synthesized by the sonicated sol-gel method. The prepared photocatalyst demonstrated maximum efficiency when the dosage of photocatalysts was 1g/L and the doping level was 3wt% of copper. The maximum methanol yields of two observed polluted seawater systems were 2910 μmol/g and 2250 μmol/g after 5 hour illumination of UV light. However, the 5 hour natural sunlight illumination generated the yield of 990 μmol/g and 910 μmol/g of methanol. The observed results demonstrated that band gap narrowing of the photocatalyst by carbon modification and the restriction of electron-hole pair combination by copper doping both greatly enhanced the photocatalytic reduction of CO2 to methanol under both UV and natural sunlight.
Kavil, Y., Shaban, Y., Orif, M., Al-Farawati, R., Zobidi, M., & Khan, S. (2018). Production of Methanol as a Fuel Energy from CO2 Present in Polluted Seawater - A Photocatalytic Outlook. Open Chemistry, 16 (1), 1089-1098. https://doi.org/10.1515/chem-2018-0120