影响因子：

13.7

DOI码：

10.1016/j.actphy.2026.100329

发表刊物：

Acta Physico-Chimica Sinica

关键字：

HOFs/MOFs, Built-in electric field, S-scheme heterojunctions, π-π stacking charge-transfer channels, Photocatalysis

摘要：

Despite hydrogen-bonded organic frameworks (HOFs) and metal-organic framework (MOFs) exhibit distinct advantages in photocatalysis, the fabrication of HOFs/MOFs heterojunction remains scarcely explored. In particular, the deep-seated charge transfer dynamics in such heterojunctions remain unclear. Herein, in situ coupling HOFs (SA-TCPP) and MOFs (ZnTCPP) through π–π interaction to fabricate the porphyrin-based HOFs/MOFs (SA-TCPP/ZnTCPP) S-scheme heterojunction with strong IEF, in which the optimal IEF intensity for SA-TCPP/ZnTCPP was increased by 11.5 and 4.9 times compared to individual SA-TCPP and ZnTCPP, respectively. Within the SA-TCPP/ZnTCPP S-scheme heterojunction system, the contact interface serves as the charge carriers regulation centers to promote IEF pumps strength via π–π stacking HOMO-LOMO charge-transfer channels, which adjusts the precise direction of spatial separation for photogenerated charge carriers and triggers a sophisticated cascade reactions via “photoexcitation-migration channel-pump acceleration” strategy. Compared with the individual SA-TCPP and ZnTCPP, the photocatalytic rate of H2 (2307 μmol g-1 h-1) and H2O2 (295.2 μmol g-1 h-1) for SA-TCPP/ZnTCPP increased 7.02 times, 5.6 times and 3.09 times, 2.85 times, respectively. The significant improvement can be ascribed to the efficient separation efficiency of charge carriers, which has been elucidated by femtosecond transient absorption spectroscopy (fs-TAS), kelvin probe force microscopy (KPFM), in situ X-ray photoelectron spectroscopy (in situ XPS) and density functional theory (DFT). This work achieves the cross-functional integration of frameworks, providing a novel design strategy for developing excellent and multifunctional artificial photosynthesis systems.

第一作者：

蔡清红

合写作者：

曾嘉,贺有周

论文类型：

SCI

通讯作者：

李宇涵

是否译文：

否

CN号：

100329