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Triboelectric nanogenerators based on graphene oxide coated nanocomposite fibers for biomedical applications

机译：基于石墨烯氧化物涂层纳米复合纤维的摩擦纳米料族生物医学应用

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摘要

A high demand for green and eco-friendly triboelectric nanogenerators (TENGs) has multiplied the importance of their degradability for biomedical applications. However, the charge generation of current eco-friendly TENGs is generally limited. In this research, a flexible TENG based on a silk fibroin (SF) fibrous layer and a polycaprolactone (PCL)/graphene oxide (GO) fibrous layer was developed. Moreover, the PCL/GO layer was surface modified using various concentrations of GO (0, 1.5, 3, 6, and 9 wt%). We demonstrated that surface modification using GO nanosheets significantly improved the output of the TENG. Notably, the optimized GO modified layer resulted in a voltage of 100 V, a current of 3.15 mA m(-2), and a power density of 72 m Wm(-2). Moreover, a thin PCL layer applied as an encapsulation layer did not significantly modulate the performance of the TENG. Furthermore, during 28 d of soaking in a phosphate buffer solution, the proposed TENG was able to successfully generate electricity. The TENG was also proposed to be used for the electrical stimulation of PC12 cells. The results confirmed that this self-powered electrical stimulator could promote the attachment and proliferation of PC12 cells. Therefore, we have shown the potential for an eco-friendly and cost-effective TENG based on GO modified PCl/GO and silk fibrous layers to be used as a power source for biomedical applications.
机译：对绿色和环保摩擦纳米液（Tengs）的高需求乘以其可降解生物医学应用的重要性。然而，当前生态型腾冲的电荷产生通常是有限的。在该研究中，基于丝素蛋白（SF）纤维层和聚己内酯（PCL）/石墨烯（GO）纤维层的柔性滕。此外，使用各种浓度的GO（0,1.5,3,6和9wt％）改性PCL /去层。我们证明，使用Go Nanoshss的表面改性显着提高了腾腾的输出。值得注意的是，优化的GO改装层导致电压为100V，电流为3.15mA m（-2），功率密度为72米（-2）。此外，施加作为封装层的薄PCL层并没有显着调节滕的性能。此外，在磷酸盐缓冲溶液中浸泡的28 d溶液期间，所提出的腾腾能够成功地发电。还提出腾腾用于电刺激PC12细胞。结果证实，这种自动电气刺激器可以促进PC12细胞的附着和增殖。因此，我们已经示出了基于GO改装的PCL / GO和丝纤维层的环保和成本效益的腾腾，以用作生物医学应用的电源。

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