Ghada Abdo1 Yasseen Ibrahim2 Samah Dib3 Zainab Abdul-Rahman3 Kamel Eid3 Aboubakr M. Abdullah3 Ahmed Elzatahry2

1, Pharmacy, Qatar University, Doha, , Qatar
2, Material Science, Qatar University, Doha, , Qatar
3, Center for Advanced Materials, Qatar University, Doha, , Qatar

Accumulation and excessive release of CO2 into the atmosphere resulting from the consumption of fossil fuels are considered as serious debate on harmful environmental changes, such as global warming, desertification, and ocean acidification. To tackle these problems, electrochemical reduction of CO2 has been regarded as a paramount demand in order to enable the recycling and conversion of CO2 to useful fuels. Herein, we controlled fabrication of Cu and Zn single atom doped MXene denoted as (Cu/Zn/Ti3C2Tx). The typically prepared Cu/Zn/Ti3C2Tx were obtained in a high yield of uniform and exfoliated two-dimensional nanosheets with average diameters of (400 nm) in the length and (200 nm) in the width and coherently doped with Cu (1 Wt. %) and Zn (1 Wt. %) in the form of single atom. Cu/Zn/Ti3C2Tx showed a significant higher electrochemical CO2 reduction activity and stability compared to Ti3C2Tx at room temperature. The obtained current density on Cu/Zn/Ti3C2Tx was around 3 times higher than that of Ti3C2Tx as well as faster reduction kinetics. Intestinally enough, Cu/Zn/Ti3C2Tx revealed higher selectivity and tendency to reduce CO2 into ethanol. The insights gained from this work would shed the light on designing novel bimetallic systems with MXene support for the electrochemical reduction of CO2.