Single-atom alloy: Superb cocatalyst for photocatalysis

Phys.org  October 28, 2020 While surface charge state of co-catalysts plays a critical role for boosting photocatalysis, the study on surface charge regulation via their precise structure control, remains rare. Researchers in China have fabricated an MOF-stabilized bimetallic Pd-Pt nanoparticles which feature adjustable Pt coordination environment and the controlled structure from core-shell to single-atom alloy (SAA). They found that Pt surface charge regulation can be alternatively achieved by changing its coordination environment and the structure of Pd-Pt co-catalyst, where the charge between Pd and Pt is redistributed. The optimized Pd-Pt composite exhibits an exceptionally high photocatalytic hydrogen production activity, far […]