Carbon dioxide utilization using metal-organic framework
Madina Abseit
Department of Chemistry, School of Science and Technology, Nazarbayev University,
Astana, Kazakhstan
Email: [email protected]
Abstract
Combustion of fossil fuels is the main source of carbon dioxide (CO 2 ) emission, which
adversely affect on climate change, causing global warming and ocean acidification. The
gradual increase of CO 2 concentration in the atmosphere brings an attention for cost-effective
and eco-friendly remediation for the effective utilization of CO 2 that is the still one of the most
popular subject of research in environmental sciences. Metal-organic framework (MOF)
technology is being studied for its effective adsorption of diverse gases and its catalytic
performances due to its larger surface area and higher pore volumes. In this study, MOFs were
discussed for their uptake capacity of CO 2 , showing good selective adsorption and review the
reactivity of MOFs for the photocatalytic conversion of CO 2 , displaying variety products such
as carbon monoxide (CO), formate (HCOO - ) and methane (CH 4 ), depending on what MOF was
used. Finally, electrocatalytic reduction of CO 2 to CO and CH 4 was explained. Because the
major problem of CO 2 reduction is selectivity of the product and most of catalytic systems
produce mixture of products, MOFs demonstrated good selectivity of the conversion products
due to catalytic sites and reaction spaces for both photocatalysis and electrocatalysis.
Therefore, usage of MOFs could positively manage budget by avoiding expensive product
separation processes. Therefore, this work suggests that metal-organic framework technology
is a promising candidate for adsorption and conversion of carbon dioxide to valuable products.