Department of Physics, Shanghai University, Shanghai 200444, China; Institute of Low-dimensional Carbons and Device Physics, Shanghai University, Shanghai 200444, China.
Department of Applied Chemistry, Meijo University, Nagoya 468-8502, Japan.
Mater Sci Eng C Mater Biol Appl. 2021 Jan;120:111757. doi: 10.1016/j.msec.2020.111757. Epub 2020 Nov 27.
As a paper-like membrane composed of single-walled carbon nanotube (SWCNT), buckypaper possesses high conductivity, ideal flexibility, large surface area, great thermal/chemical stability and biocompatibility, which has manifested its potential as an alternative support material. However, due to the lack of defects, high quality SWCNT synthesized by arc-discharge method is difficult to be modified with metal nanoparticles for electro-catalysis. In this paper, a novel green strategy has been developed to fabricate SWCNT buckypaper decorated with Cu/reduced graphene oxide (Cu/rGO-BP) for the first time, in which graphene oxide functions as the intermediate between SWCNT and Cu nanoparticles. The fabricated Cu/rGO-BP was applied as a flexible electrode for electrochemical glucose detection. The electrode exhibited excellent electro-catalytic activity for glucose oxidation. The sensor based on Cu/rGO-BP performed a high upper limit of linear range (25 mM), which is close to commercial glucose sensors. The proposed strategy for Cu/rGO-BP fabrication can be extended to modify buckypaper with other metal or metal oxide nanoparticles, and thus opens an innovative route to potential practical applications of flexible buckypaper in wearable bioelectronics.
作为由单壁碳纳米管（SWCNT）组成的类纸膜，巴基纸具有高导电性、理想的柔韧性、大的表面积、良好的热/化学稳定性和生物相容性，这使其成为替代支撑材料的潜在选择。然而，由于缺乏缺陷，电弧放电法合成的高质量 SWCNT 很难用金属纳米颗粒进行修饰以用于电催化。在本文中，首次开发了一种新颖的绿色策略，用于制备负载 Cu/还原氧化石墨烯（Cu/rGO-BP）的 SWCNT 巴基纸，其中氧化石墨烯在 SWCNT 和 Cu 纳米颗粒之间起到了中间作用。所制备的 Cu/rGO-BP 被用作电化学葡萄糖检测的柔性电极。该电极对葡萄糖氧化表现出优异的电催化活性。基于 Cu/rGO-BP 的传感器具有很高的线性范围上限（25 mM），接近商业葡萄糖传感器。这种用于制备 Cu/rGO-BP 的策略可以扩展到用其他金属或金属氧化物纳米颗粒来修饰巴基纸，从而为柔性巴基纸在可穿戴生物电子学中的潜在实际应用开辟了一条创新途径。
