使用普鲁士蓝色用于小型氧气传感器的无污染参考电极.
Akiko Yoshida1,2, Kritin Pirabul2, Shunsuke Fujii3
1Techno Medica Co., Ltd., Yokohama, Kanagawa 224-0041, Japan.
ACS applied materials & interfaces
|August 20, 2024
概括
这项研究引入了一种新的基于普鲁士蓝色的参考电极用于小型氧气传感器,在临床检测设备中比传统的银/银化物电极提供更高的稳定性.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
背景情况:
- 护理点检测 (POCT) 设备对于有效的患者护理至关重要.
- 在POCT中常见的电化学传感,如血氧传感器,通常依赖Ag/AgCl参考电极.
- Ag/AgCl 电极可以用银离子污染工作电极,导致设备降解.
研究的目的:
- 为小型电化学POCT设备开发稳定可靠的参考电极.
- 在POCT应用中解决传统Ag/AgCl参考电极的局限性.
主要方法:
- 使用嵌入普鲁士蓝色 (PB) 的石墨烯涂层多孔体球 (G/PSS) 制造了一种新型参考电极,称为PB/G/PSS.
- 在导电性G/PSS矩阵内分散PB以确保电解质接触.
- 用于POCT设备制造的PB/G/PSS电极的丝网打印.
主要成果:
- 在31天内,PB/G/PSS电极在30mV范围内表现出稳定的开放电路潜力.
- 使用PB/G/PSS电极的氧气传感器在几天内显示稳定运行.
- 带有Ag/AgCl电极的传感器在一天内出现了快速恶化.
结论:
- 与Ag/AgCl电极相比,PB/G/PSS参考电极提供了显著改善的稳定性.
- 这种新型电极是小型基于电化学的POCT设备的有希望的替代品.
- 可印,稳定的PB/G/PSS电极有助于开发下一代POCT.
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