This study explores the synergistic effect of atomically precise metal nanoclusters (NCs) with MXene (Ti3C2Tx) for solar CO2 conversion. The research focuses on the synthesis and characterization of CdS and modified Ti3C2Tx nanosheets (CT and CTA) as photoelectrodes. The NCs are synthesized using gold chloride and 2-mercaptoethylamine (MEA) as precursors, and are ligated with glutathione (GSH) to stabilize them. The photoelectrochemical (PEC) performance of the materials is evaluated using a three-electrode quartz cell with Pt as the counter electrode, Ag/AgCl as the reference electrode, and the sample on FTO glass as the working electrode. The PEC measurements include determining the average electron lifetime (τn) and charge carrier density (ND) of the photoelectrode. The results show that the modified Ti3C2Tx nanosheets (CTA) exhibit enhanced stability and photoactivity compared to CdS and CT. The study also includes various characterization techniques such as zeta potential, FESEM, XRD, UV-vis, AFM, TEM, and EDS to analyze the structure and composition of the materials. The results indicate that the combination of atomically precise metal NCs with MXene can significantly improve the efficiency of solar CO2 conversion. The study references several previous works on MXene, photocatalysis, and nanocluster synthesis, highlighting the importance of these materials in renewable energy applications. The research provides a comprehensive understanding of the role of atomically precise metal NCs in enhancing the performance of MXene-based photoelectrodes for solar CO2 conversion.This study explores the synergistic effect of atomically precise metal nanoclusters (NCs) with MXene (Ti3C2Tx) for solar CO2 conversion. The research focuses on the synthesis and characterization of CdS and modified Ti3C2Tx nanosheets (CT and CTA) as photoelectrodes. The NCs are synthesized using gold chloride and 2-mercaptoethylamine (MEA) as precursors, and are ligated with glutathione (GSH) to stabilize them. The photoelectrochemical (PEC) performance of the materials is evaluated using a three-electrode quartz cell with Pt as the counter electrode, Ag/AgCl as the reference electrode, and the sample on FTO glass as the working electrode. The PEC measurements include determining the average electron lifetime (τn) and charge carrier density (ND) of the photoelectrode. The results show that the modified Ti3C2Tx nanosheets (CTA) exhibit enhanced stability and photoactivity compared to CdS and CT. The study also includes various characterization techniques such as zeta potential, FESEM, XRD, UV-vis, AFM, TEM, and EDS to analyze the structure and composition of the materials. The results indicate that the combination of atomically precise metal NCs with MXene can significantly improve the efficiency of solar CO2 conversion. The study references several previous works on MXene, photocatalysis, and nanocluster synthesis, highlighting the importance of these materials in renewable energy applications. The research provides a comprehensive understanding of the role of atomically precise metal NCs in enhancing the performance of MXene-based photoelectrodes for solar CO2 conversion.