Formation of CaO-TiO2 composite film via electrodeposition for CO2 adsorption

With increasing awareness on global warming and climate change, the carbon dioxide (CO2) capture has been studied extensively for the reduction of its emission to our atmosphere. In the present study, the calcium oxide (CaO) - titanium dioxide (TiO2) has been developed via electrodeposition technique for better CO2 adsorption purpose. Based on the FESEM micrographs, CaO-TiO2 was appeared in micro-size composite film. The CO2 adsorption capacity was obtained by thermogravimetric analysis (TGA). The results revealed that the highest Ca content (34.51%) of CaO-TiO2 composite film exhibited CO2 adsorption capacity of approximate to 2.80 mmol/g. In this case, CaO could reversibly bind with CO2 gas and form calcium carbonate (CaCO3) via carbonate looping process.