MOF Encapsulated AuPt Bimetallic Nanoparticles for Improved Plasmonic-induced Photothermal Catalysis of CO 2 Hydrogenation

Exploring new catalytic strategies for achieving efficient CO hydrogenation under mild conditions is of great significance for environmental remediation. Herein, a composite photocatalyst Zr-based MOF encapsulated plasmonic AuPt alloy nanoparticles (AuPt@UiO-66-NH ) was successfully constructed for the efficient photothermal catalysis of CO hydrogenation. Under light irradiation at 150 °C, AuPt@UiO-66-NH achieved a CO production rate of 1451 μmol g h with 91 % selectivity, which far exceeded those obtained by Au@Pt@UiO-66-NH with Pt shell on Au (599 μmol g h ) and Au@UiO-66-NH (218 μmol g h ). The outstanding performances of AuPt@UiO-66-NH were attributed to the synergetic effect originating from the plasmonic metal Au, doped active metal Pt, and encapsulation structure of UiO-66-NH shell. This work provides a new way for photothermal catalysis of CO and a reference for the design of high-performance plasmonic catalysts.