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https://doi.org/10.5562/cca2527

A Newly Developed Electrocatalytic Oxidation and Voltammetric Determination of Curcumin at the Surface of PdNp-graphite Electrode by an Aqueous Solution Process with Al3+

Semiha Çakır ; Department of Chemistry, Faculty of Science, Gazi University, 06500 Teknikokullar, Ankara, Turkey
Ender Biçer ; Department of Chemistry, Faculty of Arts and Sciences, Ondokuz Mayıs University, 55139 Atakum, Samsun, Turkey
Emine Yılmaz Arslan ; Ministry of Health of Turkey, Turkey Pharmaceuticals and Medical Devices Agency, 06520 Çankaya-Ankara, Turkey

Puni tekst: engleski, pdf (1 MB) str. 105-112 preuzimanja: 834* citiraj
APA 6th Edition
Çakır, S., Biçer, E. i Arslan, E.Y. (2015). A Newly Developed Electrocatalytic Oxidation and Voltammetric Determination of Curcumin at the Surface of PdNp-graphite Electrode by an Aqueous Solution Process with Al3+. Croatica Chemica Acta, 88 (2), 105-112. https://doi.org/10.5562/cca2527
MLA 8th Edition
Çakır, Semiha, et al. "A Newly Developed Electrocatalytic Oxidation and Voltammetric Determination of Curcumin at the Surface of PdNp-graphite Electrode by an Aqueous Solution Process with Al3+." Croatica Chemica Acta, vol. 88, br. 2, 2015, str. 105-112. https://doi.org/10.5562/cca2527. Citirano 07.04.2020.
Chicago 17th Edition
Çakır, Semiha, Ender Biçer i Emine Yılmaz Arslan. "A Newly Developed Electrocatalytic Oxidation and Voltammetric Determination of Curcumin at the Surface of PdNp-graphite Electrode by an Aqueous Solution Process with Al3+." Croatica Chemica Acta 88, br. 2 (2015): 105-112. https://doi.org/10.5562/cca2527
Harvard
Çakır, S., Biçer, E., i Arslan, E.Y. (2015). 'A Newly Developed Electrocatalytic Oxidation and Voltammetric Determination of Curcumin at the Surface of PdNp-graphite Electrode by an Aqueous Solution Process with Al3+', Croatica Chemica Acta, 88(2), str. 105-112. https://doi.org/10.5562/cca2527
Vancouver
Çakır S, Biçer E, Arslan EY. A Newly Developed Electrocatalytic Oxidation and Voltammetric Determination of Curcumin at the Surface of PdNp-graphite Electrode by an Aqueous Solution Process with Al3+. Croatica Chemica Acta [Internet]. 2015 [pristupljeno 07.04.2020.];88(2):105-112. https://doi.org/10.5562/cca2527
IEEE
S. Çakır, E. Biçer i E.Y. Arslan, "A Newly Developed Electrocatalytic Oxidation and Voltammetric Determination of Curcumin at the Surface of PdNp-graphite Electrode by an Aqueous Solution Process with Al3+", Croatica Chemica Acta, vol.88, br. 2, str. 105-112, 2015. [Online]. https://doi.org/10.5562/cca2527

Sažetak
In the first stage, the palladium nanoparticles (PdNps)-coated graphite electrode (PdNp/GE) has been prepared. Scanning electron microscopy (SEM) technique showed that the palladium nanoparticles were uniformly distributed with an average particle diameter of 60–75 nm. And then, a novel-modified electrode has been developed by the physical deposition of Al3+ ions on palladium nanoparticles (PdNps)-coated graphite electrode (Al3+/PdNp/GE). This modified electrode was characterized by square-wave voltammetry (SWV), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The sensitivities of PdNp/GE and Al3+/PdNp/GE electrodes were tested with dopamine. Al3+/PdNp/GE exhib¬ited a catalytic activity for curcumin oxidation. The square-wave voltammogram of curcumin in phosphate buffer (pH = 2) gave an anodic peak at 0.56 V. The anodic peak current of curcumin was found to be linearly related to its concentration in the range of 3.0×10-8 M to 6.0×10-7 M with a detection limit of 2.2×10-8 M. It was also found that the novel Al3+/PdNp/GE electrode had the best sensitivity when compared to glassy carbon electrode (GCE), hanging mercury drop electrode (HMDE) and glassy carbon electrode electropolymerized with acid chrome blue K (poly-ACBK/GCE), used for the determination of curcumin. The curcumin was detected in marketed spices sample of turmeric powder. Pure turmeric powder had the highest curcumin concentration, averaging 4.317±0.175 % by weight.

Ključne riječi
modified graphite electrode; Al3+ ion; physical deposition; palladium nanoparticles; curcumin

Hrčak ID: 141981

URI
https://hrcak.srce.hr/141981

Posjeta: 1.171 *