期刊
NANOMATERIALS
卷 5, 期 4, 页码 1704-1715出版社
MDPI
DOI: 10.3390/nano5041704
关键词
voltammetry; polypyrrole-multiwalled carbon nanotubes; ferulic acid; modified electrode
类别
资金
- Science and Technology Development Fund (STDF), Egypt [5361]
A polypyrrole-multiwalled carbon nanotubes modified glassy carbon electrode-based sensor was devised for determination of ferulic acid (FA). The fabricated sensor was prepared electrochemically using cyclic voltammetry (CV) and characterized using CV and scanning electron microscope (SEM). The electrode shows an excellent electrochemical catalytic activity towards FA oxidation. Under optimal conditions, the anodic peak current correlates linearly to the FA concentration throughout the range of 3.32 x 10(-6) to 2.59 x 10(-5) M with a detection limit of 1.17 x 10(-6) M (S/N = 3). The prepared sensor is highly selective towards ferulic acid without the interference of ascorbic acid. The sensor applicability was tested for total content determination of FA in a commercial popcorn sample and showed a robust functionality.
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