Nanomaterials and System Lab, Faculty of Applied Energy Systems, Major of Mechatronics Engineering, Jeju National University, Jeju 690756, South Korea.
Subtropical/Tropical Organism Gene Bank, Jeju National University, Jeju 63243, Republic of Korea.
ACS Appl Mater Interfaces. 2021 Apr 28;13(16):18887-18896. doi: 10.1021/acsami.1c03075. Epub 2021 Apr 19.
The biomolecules offer different metal-binding sites to form a coordination polymer with structural diversity. The coordination directed one-dimensional metal-biomolecule nanofibers (Cu-Asp NFs) designed using copper as metal ion and aspartate as a ligand for triboelectric nanogenerator (TENG) is reported here. The different characterization techniques reveal the detailed characteristics of the synthesized Cu-Asp NFs. The robust coating of the Cu-Asp NFs is achieved using a simple tape cast coater. The bending and water dipping studies suggest the stability of the coated material. The relative polarity test and Kelvin probe force microscopy (KPFM) reveal the position of Cu-Asp in the triboelectric series. The Cu-Asp NFs and Teflon are used as the active material for the fabrication of freestanding mode (NF-TENG) and contact-separation mode (cNF-TENG) TENG. The NF-TENG generates an output of 200 V and 6 μA. The simple ion deposition technique enhances the voltage, current, and transferred charge of cNF-TENG by 2.5, 8, and 3 times. The use of the material for the single electrode sliding mode device further confirms the coated material's stability and robustness. A selective self-powered thioacetamide sensor is developed with the cNF-TENG, which exhibits a sensitivity of 0.76 v mM. Finally, NF-TENG is demonstrated for powering up numerous portable electronics.
生物分子提供不同的金属结合位点，形成具有结构多样性的配位聚合物。本文报道了使用铜作为金属离子和天冬氨酸作为配体设计的配位导向一维金属-生物分子纳米纤维（Cu-Asp NFs）用于摩擦纳米发电机（TENG）。不同的表征技术揭示了合成的 Cu-Asp NFs 的详细特征。使用简单的胶带涂层机实现了 Cu-Asp NFs 的坚固涂层。弯曲和水浸研究表明了涂层材料的稳定性。相对极性测试和 Kelvin 探针力显微镜（KPFM）揭示了 Cu-Asp 在摩擦电序列中的位置。Cu-Asp NFs 和聚四氟乙烯被用作自由模式（NF-TENG）和接触分离模式（cNF-TENG）TENG 的活性材料。NF-TENG 产生 200 V 和 6 μA 的输出。简单的离子沉积技术将 cNF-TENG 的电压、电流和转移电荷提高了 2.5、8 和 3 倍。该材料用于单电极滑动模式器件进一步证实了涂层材料的稳定性和坚固性。使用 cNF-TENG 开发了一种选择性自供电硫代乙酰胺传感器，其灵敏度为 0.76 v mM。最后，NF-TENG 用于为多个便携式电子产品供电。
