Highly exfoliated Ti3C2Tx MXene nanosheets atomically doped with Cu for efficient electrochemical CO2 reduction: an experimental and theoretical study

We present a facile method for the rational design of highly exfoliated two-dimensional Ti 3 C 2 T x nanosheets (T x = O, OH, and F) doped with Cu (Cu/Ti 3 C 2 T x ) for electrochemical CO 2 reduction to formic acid at low Cu content of ∼1 wt%.