Low-valence platinum single atoms in sulfur-containing covalent organic frameworks for photocatalytic hydrogen evolution.

ABSTRACT: This study focuses on optimizing catalytic activity in photocatalytic hydrogen evolution reaction by precisely designing and modulating the electronic structure of metal single atoms. The catalyst, denoted as PtSA@S-TFPT, integrates low-valence platinum single atoms into sulfur-containing covalent organic frameworks. The robust asymmetric four-coordination between sulfur and platinum within the framework enables a high platinum loading of 12.1 wt%, resulting in efficient photocatalytic hydrogen production activity of 11.4 mmol g^-1 h^-1 and stable performance under visible light. These outcomes are attributed to a reduced hydrogen desorption barrier and enhanced photogenerated charge separation, as indicated by density functional theory calculations and dynamic carrier

SUBMITTER: Chen L 

PROVIDER: S-EPMC11614902 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature