Programming Bifunctional Metal–Organic Frameworks to Integrate Multiple Triboelectric Nanogenerators for Green Electronics toward Effective Self-Powered Photocatalytic System

作者：Yue Zhang, Yue Zhang, Yingying Zhang, Yingying Zhang, Lin Zhang, Qi Qin, Yuanmeng Tao, Jiaxing Cui, Dandan Wang, Chao Huang, Hongwei Hou · 发表于：ACS Applied Materials & Interfaces · 年份：2024 · DOI：10.1021/acsami.4c16023 · 被引用次数：12 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Conducting polymers and applications、Covalent Organic Framework Applications

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 ( Cu I Cu II -1 ) and a ladder-structured MOF ( Cu II -2 ) were obtained through structural transformation. Due to the excellent charge-trapping capability and surface potential of Cu I Cu II -1, the outputs of Cu I Cu II -1-TENG (a short-circuit current ( I sc ) of 30.4 μA and an open-circuit voltage ( V oc ) of 524.1 V) were significantly superior to those of Cu II -2-TENG . The incorporation of Cu I Cu II -1 with ethylcellulose (EC) to form Cu I Cu II -1@EC composite films greatly improved the TENG outputs, and the 10% Cu I Cu II -1@EC-TENG offered the maximum I sc (57.2 μA) and V oc (986.8 V). Furthermore, multiple 10% Cu I Cu II -1@EC-TENG devices were integrated in parallel to assemble multiple TENG devices ( M-TENG ) 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 Cu I Cu II -1 and Cu II -2 . The results revea...