A Tribo/Piezoelectric Nanogenerator Based on Bio‐MOFs for Energy Harvesting and Antibacterial Wearable Device

Abstract

Abstract New types of metal–organic framework (MOF) materials have great potential in solving the current global dilemma on energy, environment, and medical care. Herein, based on two kinds of biomolecule‐MOFs (Bio‐MOFs) with favorable biocompatibility and degradation‐reconstruction characteristics, we have established a self‐powered muti‐functional device to achieve an efficient and broad‐spectrum environmental energy collection and biomedical applications. Combining Zn(II) and carnosine‐based Zn‐Car_MOF possessing a high piezoelectric response ( d 33 = 11.17 pm V −1 ) with patterned polydimethylsiloxane (PDMS) film, a tribo‐piezoelectric hybrid nanogenerator (TPHG) is constructed with a synergy output of triboelectric and piezoelectric effects. The Zn‐Car_TPHG demonstrates a high output performance (131 V at 100 kPa) and a wide range of pressure response (1 Pa–100 kPa), possessing applications in environmental energy collection and biomedical sensors. To expand the application of the wearable device, a conductive hexagonal prism MOF (Cu 3 (2,3,6,7,10,11‐hexahydroxytriphenylene) 2 (Cu‐HHTP)) is synthesized and employed to load thymol (Thy). Cooperating with Zn‐Car_TPHG, the resulting Cu‐HHTP/Thy can achieve an efficient self‐powered ROS (singlet oxygen ( 1 O 2 ) and hydroxyl radical (·OH)) generation and drug synergistic broad‐spectrum sterilization effect (efficiency ≥ 98%). In a word, the flexible wearable device based on the muti‐functional Bio‐MOFs is sustainable and environmentally friendly, possessing wide application potential in fields of environmental energy collection, biosensors, and self‐powered antibacterial.