Guangxi Key Laboratory of Integrated Circuits and Microsystems, School of Electronic and Information Engineering/School of Integrated Circuits, Guangxi Normal University, Guilin 541004, People's Republic of China.
Guangxi Key Laboratory of Nuclear Physics and Technology, College of Physics and Technology, Guangxi Normal University, Guilin 541004, People's Republic of China.
ACS Appl Mater Interfaces. 2023 Mar 15;15(10):13290-13298. doi: 10.1021/acsami.2c20543. Epub 2023 Mar 2.
Wearable non-invasive sensors facilitate the continuous measurement of glucose in sweat for the treatment and management of diabetes. However, the catalysis of glucose and sweat sampling are challenges in the development of efficient wearable glucose sensors. Herein, we report a flexible wearable non-enzymatic electrochemical sensor for continuous glucose detection in sweat. We synthesized a catalyst (Pt/MXene) by the hybridization of Pt nanoparticles onto MXene (TiCT) nanosheets with a broad linear range of glucose detection (0-8 mmol/L) under neutral conditions. Furthermore, we optimized the structure of the sensor by immobilizing Pt/MXene with a conductive hydrogel to enhance the stability of the sensor. Based on Pt/MXene and the optimized structure, we fabricated a flexible wearable glucose sensor by integrating a microfluidic patch for sweat collection onto a flexible sensor. We evaluated the utility of the sensor for the detection of glucose in sweat, and the sensor could detect the glucose change with the replenishment and consumption of energy by the body, and a similar trend was observed in the blood. An in vivo glucose test in sweat indicated that the fabricated sensor is promising for the continuous measurement of glucose, which is essential for the treatment and management of diabetes.
可穿戴无创传感器促进了葡萄糖在汗液中的连续测量,有助于糖尿病的治疗和管理。然而,葡萄糖的催化和汗液采样是开发高效可穿戴葡萄糖传感器的挑战。在此,我们报告了一种用于汗液中连续葡萄糖检测的柔性可穿戴非酶电化学传感器。我们通过将 Pt 纳米颗粒杂交到 MXene(TiCT)纳米片上合成了一种催化剂(Pt/MXene),在中性条件下具有较宽的葡萄糖检测线性范围(0-8 mmol/L)。此外,我们通过将 Pt/MXene 固定在导电水凝胶上来优化传感器的结构,以提高传感器的稳定性。基于 Pt/MXene 和优化的结构,我们通过将微流体贴片集成到柔性传感器上,用于汗液采集,制造了一种柔性可穿戴葡萄糖传感器。我们评估了传感器在汗液中检测葡萄糖的实用性,该传感器可以检测到身体能量的补充和消耗引起的葡萄糖变化,并且在血液中观察到类似的趋势。在汗液中的体内葡萄糖测试表明,所制造的传感器有望用于连续测量葡萄糖,这对于糖尿病的治疗和管理至关重要。