  The catalytic reduction of $\mathrm{CO_{2}/CO}$ is an appealing approach for
reducing greenhouse gas concentrations while also producing renewable energy.
We used two-dimensional transitional metal carbides known as Mxenes as the most
promising catalysts for boosted water-gas-shift reaction for conversion of
$\mathrm{CO_{2}}$ to chemical fuel and liquid hydrogen. Our findings reveal
that the $\mathrm{Ti_{2}C}$ surface collects $\mathrm{CO_{2}}$ and converts it
to reactive carbon mono oxide gas and oxygen termination. Surface catalytic
reactions always start with $\mathrm{CO}$ hydrogenation, which is sustained by
a continual supply of water at the optimum temperature.
  $\mathrm{Ti_{2}C}$ surface terminations are in charge of the formation of
molecules, free radicals, and alcohols, and the conversion reaction is cycled
frequently, producing methanol, methane, water, and hydrogen molecules with
each cycle. Furthermore, once water is injected for system hydrogenation, the
$\mathrm{Ti_{2}C}$ surface has the ability to hydrogenate itself, because water
breaks down into its constituents $\mathrm{O}$ and $\mathrm{OH}$ in the
presence of free radicals such as $\mathrm{H_{2}CO}$. Thus, self hydrogenation
increases liquid hydrogen generation in addition to the usage of water for
hydrogen supply.
