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

CHIN WEI LAI1,* , SRIMALA SREEKANTAN2,*

Affiliation

  1. Nanotechnology & Catalysis Research Centre (NANOCAT), 3rd Floor, Block A, Institute of Postgraduate Studies (IPS), Universiti Malaya, 50603 Kuala Lumpur, Malaysia
  2. School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia Engineering Campus, 14300 Nibong Tebal, Seberang Perai Selatan, Pulau Pinang, Malaysia

Abstract

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 ≈ 2.80 mmol/g. In this case, CaO could reversibly bind with CO2 gas and form calcium carbonate (CaCO3) via carbonate looping process..

Keywords

Carbon dioxide adsorption, CaO-TiO2 composite, Thermogravimetric, Carbonate looping.

Citation

CHIN WEI LAI, SRIMALA SREEKANTAN, Formation of CaO-TiO2 composite film via electrodeposition for CO2 adsorption, Optoelectronics and Advanced Materials - Rapid Communications, 9, 5-6, May-June 2015, pp.772-776 (2015).

Submitted at: Dec. 27, 2013

Accepted at: May 7, 2015