Chen Junzheng, Zhang Xikun, Lv Xue, Yi Shurui, Fang Di
School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China.
School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China.
Int J Biol Macromol. 2025 Apr;301:140348. doi: 10.1016/j.ijbiomac.2025.140348. Epub 2025 Jan 26.
In this study, the dispersion behavior of MoS₂ in ionic liquids (ILs) with varying alkyl chain lengths was the primary focus of investigation, followed by the design of a novel PAM/SMA/CMC/PDA@MoS hydrogel. By optimizing the concentrations of CMC and PDA@MoS, a bifunctional hydrogel with both sensing and catalytic functions was successfully developed. Mechanical tests revealed that the PAM/SMA/CMC/0.09PDA@MoS hydrogel exhibited exceptional mechanical properties, with stress (505.24 kPa), strain (2333.34 %), elastic modulus (20.17 kPa), and toughness (3990.97 kJ/m). Furthermore, the hydrogel demonstrated superior sensing performance, characterized by high sensitivity (GF = 7.67) and a rapid response time (148 ms) across a wide strain range. These properties enable precise monitoring of physiological movements, coupled with long-term cyclic stability, positioning it as a versatile material for sensors and electrodes. Subsequently, in situ stabilized silver nanoparticles (Ag NPs) were used as a template for the catalytic degradation of methylene blue (MB) using discarded human motion monitoring hydrogels. The degradation followed first-order kinetics (k = 0.54 min at 25 °C) with 85 % efficiency sustained over 10 cycles, demonstrating significant stability and recyclability. This strategy integrates sensor recycling with Ag NPs based dye degradation, addressing environmental concerns and highlighting its potential in sustainable applications.
在本研究中，重点研究了不同烷基链长度的离子液体（ILs）中MoS₂的分散行为，随后设计了一种新型的PAM/SMA/CMC/PDA@MoS水凝胶。通过优化CMC和PDA@MoS的浓度，成功开发出一种兼具传感和催化功能的双功能水凝胶。力学测试表明，PAM/SMA/CMC/0.09PDA@MoS水凝胶具有优异的力学性能，应力为505.24 kPa，应变率为2333.34%，弹性模量为20.17 kPa，韧性为3990.97 kJ/m。此外，该水凝胶表现出卓越的传感性能，在较宽的应变范围内具有高灵敏度（GF = 7.67）和快速响应时间（148 ms）。这些特性使其能够精确监测生理运动，并具有长期循环稳定性，使其成为传感器和电极的通用材料。随后，以原位稳定的银纳米颗粒（Ag NPs）为模板，利用废弃的人体运动监测水凝胶催化降解亚甲基蓝（MB）。降解遵循一级动力学（25℃时k = 0.54 min⁻¹），在10个循环中保持85%的效率，具有显著的稳定性和可回收性。该策略将传感器回收与基于Ag NPs的染料降解相结合，解决了环境问题，并突出了其在可持续应用中的潜力。
