Screen-printed electrode modified by Au/NH2-MIL-125(Ti) composite for electrochemical sensing performance of gallic acid in green tea and urine samples

Screen-printed electrode modified by Au/NH2-MIL-125(Ti) composite for electrochemical sensing performance of gallic acid in green tea and urine samples

[Display omitted] •Fabrication Au/NH2-MIL-125(Ti) composite electrocatalyst.•Excellent electrocatalytic activity towards the oxidation of gallic acid.•The low detection limit for gallic acid sensing was identified as 0.05 μM.•Excellent selectivity with good stability and reproducibility of the elect...

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Veröffentlicht in:Chemical physics letters 2022-11, Vol.807, p.140074, Article 140074
Hauptverfasser: Kavya, K.V., Vargheese, Stella, Pattappan, Dhanaprabhu, Rajendra Kumar, R.T., Haldorai, Yuvaraj
Format: Artikel
Sprache:eng
Schlagworte:
Composite
Electrochemical sensor
Gallic acid
Gold
Organic-framework
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Zusammenfassung:[Display omitted] •Fabrication Au/NH2-MIL-125(Ti) composite electrocatalyst.•Excellent electrocatalytic activity towards the oxidation of gallic acid.•The low detection limit for gallic acid sensing was identified as 0.05 μM.•Excellent selectivity with good stability and reproducibility of the electrode. Gold (Au) nanoparticles decorated titanium-metal-organic framework (Ti-MOF) composite was synthesized for electrochemical detection of gallic acid (GA). Morphological analysis showed that the Au nanoparticles with an average size of 
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2022.140074