“…The CO 2 concentration in environment is ever increasing. Thus, to find out a suitable pathway to recycle CO 2 to an energy rich material is a crucial challenge nowadays (Hoffert et al, 2002 ; Crabtree and Lewis, 2007 ; Meinshausen et al, 2009 ; Mikkelsen et al, 2010 ; Garai et al, 2012 ; Bandeira et al, 2015 ; Twidell and Weir, 2015 ). The depletion of fossil fuel during production of energy increases the CO 2 level in the environment (Hoel and Kverndokk, 1996 ; Höök and Tang, 2013 ).…”