The Journal of Physical Chemistry C, Год журнала: 2024, Номер 128(36), С. 15000 - 15011
Опубликована: Авг. 29, 2024
Semiconductor heterojunctions could accelerate carrier separation and transfer for improving light-to-hydrogen (LTH) conversion efficiency. However, the lack of tight efficient interfacial charge cross in three-dimensional semiconductor-based limits their practical application relevant profound understanding delivery. In this work, porphyrin (Cu)-based COF with a highly conjugated structure was deposited onto (3D) ZnIn2S4 by facile solvothermal method to prepare 3D/2D ZnIn2S4@CuP–Ph heterojunction. The content-optimized composite showed an excellent LTH rate up 2667.94 μmol g–1 h–1, about 13.5 times higher than that pristine ZnIn2S4. significantly meliorated photocatalytic performance is attributed synergistically functioning contributors, is, fast augmented light capturing capability after integration. Also, work function results DFT calculation reveals electrons CuP–Ph (Φ = 4.41 eV) from interface electron delivery channels two components ZIS 7.03 until Fermi level reaches equilibrium. This moment, 6.50 lies between components, accumulation region formed on side ZIS. Additionally, free-energy barriers hydrogen evolution dominated (0.0955 much lower (0.1256 eV). study possesses certain guiding significance design organic–inorganic heterojunction photocatalysts conversion.
Язык: Английский
