富含酸缺陷的石墨碳化物,用于高灵敏度电压测量测定三
Yeabsira Mihret1, Getu Sisay1, Abebe Diro1
1Department of Chemistry, College of Natural Sciences, Jimma University, 378 Jimma, Ethiopia.
ACS omega
|December 18, 2023
概括
一种使用缺陷石墨碳化物改性玻璃碳电极 (ND-CN/GCE) 的新型电化学传感器,可提供高度敏感的二检测. 这种传感器在牛奶和多维生素等实物样本中表现出色.
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
- 分析化学 分析化学
背景情况:
- 托芬 (Trp) 是一种具有重要的生物作用的关键氨基酸.
- 开发用于TRP检测的敏感和选择性方法对于各种应用至关重要.
- 现有的电化学传感器在灵敏度和选择性方面经常面临挑战.
研究的目的:
- 引入一种高度敏感的电化学传感器,用于探测托.
- 为了提高性能,使用缺陷的石墨碳化物修饰玻璃碳电极 (ND-CN/GCE).
- 为了评估传感器在现实世界样本中的实际适用性.
主要方法:
- 使用XPS,XRD,FTIR,SEM和TEM合成和表征缺陷丰富的石墨碳化物 (ND-CN).
- 使用循环电压测量和电化学阻抗光谱学进行电化学表征.
- 在pH值3.0时通过正方形波电压测量检测托.
主要成果:
- 与修改和裸体电极相比,ND-CN/GCE对Trp的氧化电流显著更高.
- 在ND-CN/GCE中对Trp的电化学氧化被确定为扩散控制的过程.
- 传感器实现了宽线性范围 (0.0140μM) 和低检测极限 (0.0034μM).
- 在牛奶和多维生素片样本中成功分析Trp,恢复率高 (97.0108%).
结论:
- 开发的ND-CN/GCE是一种高度敏感和选择性的电化学传感器,用于探测托.
- 传感器表现出极好的可重复性,可重复性和实际可用性.
- 这一进步有望在复杂矩阵中准确量化托.
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