Boosting CO₂ hydrogenation to methanol via enhancement of the Cu-ZnO interface on Pt₁Cu single atom alloy

Abstract The regulated fabrication, selective exposure, and activation of additional active sites while concurrently limiting noble metal use is critical for accelerating methanol synthesis from CO 2 hydrogenation over Cu-base complex catalysts. Employing layered double oxides (LDO) as the support with intrinsically structured ZnAl, herein, an efficient Pt 1 Cu single atom alloy catalyst bearing extrinsically deposited ultrafine Cu nanoparticles derived from metal-organic framework (MOF) is presented, manifesting a strong Cu-ZnO interface when compared to identically synthesized counterparts with weak and medium strength interface effects. AC-HAADF-STEM and XPS characterization show that Pt exists in the form of isolated atoms and Cu interacts strongly with ZnO in Pt 1 Cu-H. At 280 ° C, the catalyst has a CO 2 conversion rate of 9.60%, a methanol selectivity of 58.70%, and good stability. The strong Cu-ZnO interface helps to improve the activity of monatomic alloy.