ACS Applied Polymer Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 5, 2024

Metal-free polymeric photocatalysts with tunable building blocks, ample redox-active centers, and exceptional light-harvesting capability have emerged as promising candidates for generating hydrogen peroxide (H2O2) through the oxygen reduction reaction (ORR) water oxidation (WOR). The slow kinetics of WOR process coupled rapid charge recombination nevertheless impedes efficient generation H2O2. Herein, a thiophene functionalized linear conjugated polymer (DEB-Tp-S2) was fabricated effective overall H2O2 photoproduction. DEB-Tp-S2 exhibits high initial photocatalytic yield rate 2762 μmol g–1 h–1 in absence sacrificial additives possesses outstanding cycling stability. Experimental density functional theory (DFT) results exhibit that moieties can reduce strength O–H bond H2O, which promotes 4e– process, thereby suppressing improving proton supply. This work reveals indispensable role chemical structure engineering optimizing their offers fresh insights into design achieving production.

Язык: Английский