检出限
材料科学
电化学气体传感器
石墨烯
水溶液
安培法
电化学
循环伏安法
氯
介电谱
自来水
电极
无机化学
化学工程
化学
纳米技术
色谱法
冶金
有机化学
物理化学
工程类
环境工程
作者
Somayeh Jafari,Seied Mahdi Pourmortazavi,Ali Ehsani,Somayeh Mirsadeghi
标识
DOI:10.1016/j.ab.2023.115334
摘要
This work reports the profit of using a MOF compound for developing a sensitive electrochemical sensor to free chlorine detection in an aqueous solution. Co-MOF and FGO composites were synthesized and combined with the carbon paste (CP) to prepare an efficient electrochemical sensor with high sensing ability. The fabricated Co-MOF and FGO composites were characterized by SEM, EDX, FT-IR, and XRD techniques. Meanwhile, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were utilized to assess the electrochemical performance of the Co-MOF-FGO/CP modified electrode. Under the optimized condition, the amperometric detection showed that the reduction current of free chlorine increased linearly with a coefficient determination of 0.995 during its wide concentration range of 0.1-700 ppm. Also the detection limit (LOD) (S/N = 3) was 0.01 ppm. The selectivity of the sensor was tested with possible interferences, and satisfactory results were obtained. The proposed sensor was successfully used to determine the free chlorine in tap water and swimming pool water real samples. The results suggested that this proposed sensor could pave the way for developing the electrochemical sensor of free chlorine in aqueous media with MOFs.
科研通智能强力驱动
Strongly Powered by AbleSci AI