Zhang Yue, Zhang Ying-Ying, Zhang Lin, Qin Qi, Tao Yuanmeng, Cui Jiaxing, Wang Dandan, Huang Chao, Hou Hongwei
Center for Advanced Materials Research, Henan Key Laboratory of Functional Salt Materials, and School of Materials Electronics and Energy Storage, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China.
College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China.
ACS Appl Mater Interfaces. 2025 Jan 8;17(1):1522-1532. doi: 10.1021/acsami.4c16023. Epub 2024 Dec 17.
Programming and synthesizing bifunctional materials for regulating the output of triboelectric nanogenerators (TENGs) and their photocatalytic efficiency is a promising strategy for energy harvesting to build self-powered systems. Herein, we tackle this challenge by introducing metal-organic frameworks (MOFs) as molecular catalysts and triboelectric layers for self-powered photocatalytic systems. A zeolite-like mixed-valence MOF () and a ladder-structured MOF () were obtained through structural transformation. Due to the excellent charge-trapping capability and surface potential of , the outputs of (a short-circuit current () of 30.4 μA and an open-circuit voltage () of 524.1 V) were significantly superior to those of . The incorporation of with ethylcellulose (EC) to form composite films greatly improved the TENG outputs, and the 10% offered the maximum (57.2 μA) and (986.8 V). Furthermore, multiple 10% devices were integrated in parallel to assemble multiple TENG devices () to harvest biomechanical energy, which displayed significant potential to continuously power blue LEDs, generating blue-light irradiation to trigger the photocatalytic C(sp)-H/Si-H cross-coupling reactions of aromatic alkyne and trimethylsilane for alkynylsilane over the photocatalysts and . The results revealed that achieved a cooperative effect on remarkable catalytic selectivity and activity. This work demonstrates that bifunctional MOFs can serve as friction electrode materials for the large-scale integration and assembly of MOF-based TENG, and photocatalysts for achieving self-powered photocatalytic systems.
设计和合成用于调节摩擦纳米发电机（TENG）输出及其光催化效率的双功能材料，是构建自供电系统以实现能量收集的一种有前景的策略。在此，我们通过引入金属有机框架（MOF）作为自供电光催化系统的分子催化剂和摩擦电层来应对这一挑战。通过结构转变获得了一种类沸石混合价态MOF（）和一种梯形结构MOF（）。由于具有优异的电荷捕获能力和表面电位，的输出（短路电流（）为30.4 μA，开路电压（）为524.1 V）明显优于。与乙基纤维素（EC）结合形成复合膜极大地提高了TENG的输出，10%的提供了最大的（57.2 μA）和（986.8 V）。此外，多个10%的器件并联集成以组装多个TENG器件（）来收集生物机械能，其显示出持续为蓝色发光二极管供电的巨大潜力，产生蓝光照射以触发光催化剂和上芳香炔烃与三甲基硅烷的光催化C(sp)-H/Si-H交叉偶联反应生成炔基硅烷。结果表明，在显著的催化选择性和活性方面实现了协同效应。这项工作表明，双功能MOF可作为基于MOF的TENG大规模集成和组装的摩擦电极材料，以及用于实现自供电光催化系统的光催化剂。
