The adsorption of furfural on SrTiO3 and SrCoxTi1-xO3 perovskites: A DFT study within the molecular cluster approach
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Toledo, Felipe Silva
Pecchi, Gina A.
The adsorption of furfural on SrTiO3 and SrCoxTi1-xO3 perovskites is addressed by DFT calculations within the molecular cluster approach. The results show that the mode of adsorption depend on the type of isomer, cis or trans. The cis isomer adsorbs through the interaction of both oxygen atoms of furfural with the surface, while the trans isomer interacts only through the carbonyl oxygen. The partial substitution of titanium by cobalt modifies importantly the adsorption modes, thus the cis isomer adsorbs by means of the simultaneous interaction of the carbonyl oxygen with the cobalt and titanium atoms, through the unshared electrons of the oxygen atom. The trans isomer instead adsorbs solely by means of the interaction of the carbonyl oxygen with the cobalt and titanium atoms.
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