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Tri-metallic (Ni–Ce–Cu)-based metal–organic framework for highly efficient electrochemical detection of l-cysteine

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(6), pp.1733-1745
  • DOI : 10.1007/s42823-023-00570-8
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : April 17, 2023
  • Accepted : June 30, 2023
  • Published : October 1, 2023

Narayanan Mariyammal 1 Perumal Panneerselvam 1

1Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603 203, India

Accredited

ABSTRACT

This work describes Ni–Ce–Cu metallic–organic framework (MOF) for the detection of non-essential amino acid L-cysteine. The tri-metallic Ni–Ce–Cu MOF was synthesized via a solvothermal method. The cyclic voltammetry and the differential pulse voltammetry techniques were used to examine the electrochemical detection of L-cysteine. The Ni–Ce–Cu MOF shows an oxidation peak in PB solution at pH 3.0 between the potential range of 0.0 and 0.7 V and strong electro-catalytic activity toward the oxidation of L-cysteine across a wide linear range of 0.1 to 250 nM and low detection limit (LOD) was calculated of 1.56 nM. The analysis of L-cysteine in milk and egg yolk samples showed with recovery range of 96.75–103.5% and 97.78–99.43% with RSD% of 2.3–3.2% and 2.7–7.2%, respectively. These results show the Ni–Ce–Cu MOF has high selectivity for L-cysteine detection in milk and egg samples.

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