Protruding Pt single-sites on hexagonal ZnIn₂S₄ to accelerate photocatalytic hydrogen evolution.

ABSTRACT: Single-site cocatalysts engineered on supports offer a cost-efficient pathway to utilize precious metals, yet improving the performance further with minimal catalyst loading is still highly desirable. Here we have conducted a photochemical reaction to stabilize ultralow Pt co-catalysts (0.26 wt%) onto the basal plane of hexagonal ZnIn₂S₄ nanosheets (Pt_SS-ZIS) to form a Pt-S₃ protrusion tetrahedron coordination structure. Compared with the traditional defect-trapped Pt single-site counterparts, the protruding Pt single-sites on h-ZIS photocatalyst enhance the H₂ evolution yield rate by a factor of 2.2, which could reach 17.5 mmol g^-1 h^-1 under visible light irradiation. Importantly, through simple drop-casting, a t

SUBMITTER: Shi X 

PROVIDER: S-EPMC8917206 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature