Flexible Hybrid Membrane with Synergistic Exciton Dynamics for Excessive 280 h of Durably Piezo‐Photocatalytic H<sub>2</sub>O‐to‐H<sub>2</sub> Conversion
Tenghao Ma, Guocheng Liao, Fanfan Gao, Wen Duan, Yusen Wang, Rongxia Cui, Chuanyi Wang, Wei Li
Abstract
Abstract Solar‐driven H 2 O‐to‐H 2 conversion is a feasible artificial photoconversion technology for clean energy production. However, low photon utilization efficiency has become a major obstacle limiting the practical application of this technology. Herein, a metal atomic replacement (Sb→Ni) is conducted to disintegrate bulk Sb 2 S 3 nanorods and synchronously grow the NiS nanolayers, and a flower‐like Sb 2 S 3 ‐NiS nanocomposite with high BET specific surface area and synergistic exciton dynamics is constructed for simulated solar (SSL)‐driven H 2 O‐to‐H 2 conversion. The optimal Sb 2 S 3 ‐NiS nanocomposite is compounded with polyvinylidene fluoride (PVDF) to prepare a flexible PVDF/Sb 2 S 3 ‐NiS (PSN) hybrid membrane with stable structure and excellent recyclability via an electrospinning method. Due to the synergistically interacted organic–inorganic interface and high porosity, it is conducive to the exposure of effective active sites, exciton conduction and mass transfer and exchange, thereby an outstanding alkaline (Ph = 13.0) H 2 O‐to‐H 2 conversion activity with a 0.06% of solar‐to‐hydrogen efficiency and over 280 h (70 cycles) of durable recycling is achieved under the collaborative drives of SSL and weak ultrasound (40 Hz). This study raises a state‐of‐the‐art membrane material for solar‐driven panel reaction technology.