材料科学
安培法
偏苯三甲酸
电极
化学工程
纳米颗粒
电化学气体传感器
电解质
碳化
纳米复合材料
电化学
纳米技术
化学
有机化学
复合材料
扫描电子显微镜
物理化学
工程类
分子
作者
Veeramuthu Saravanakumar,R. Venkatachalam,Murugavel Kathiresan,V. Suryanarayanan,Sambandam Anandan,Kuo‐Chuan Ho
标识
DOI:10.1016/j.jtice.2022.104248
摘要
Background: In recent times, development of an efficient electrode material for the determination of caffeine content in beverages and other related sources becomes essential. In this work, for the first time, a novel electrochemical sensor based on carbonized Cu-4,4’-bipyridine-trimesic interlinked metal-organic framework (CBT-MOF) was prepared, characterized by various surface analytical techniques and employed for the effective sensing of caffeine. Method: Copper-4,4’-bipyridine-trimesic acid interlinked MOF (CBT-MOF) was prepared by simple solvo-thermal method and it was carbonized at different temperatures. Significant findings The superiority of CBT-500 may be associated with rise in the Conductivity of the copper oxide nanoparticles by increasing the carbonizing temperature at 500 °C. which enhances the electron transfer kinetics between the analyte and the copper oxide nanoparticle. Increase in temperature above 500 °C, (CBT-600 and CBT-700), results in lower conductivity, thereby decreasing the electron transfer kinetics between the electrode/electrolyte interface. As expected, the amperometric detection of caffeine on fabricated electrode material provided a linear dynamic range from 1 to 10 μM with a low detection limit and higher sensitivity of 0.0190 μM and 0.0848 mA μM−1 cm−2. Further, the fabricated electrode material remained stable, leading to a promising sensor material for the analysis of caffeine in coffee samples.
科研通智能强力驱动
Strongly Powered by AbleSci AI