Highly sensitive detection of gallic acid in food samples by using robust NiAl2O4 nanocomposite materials

Mani Sivakumar, Karuppiah Pandi, Shen Ming Chen, Sudesh Yadav, Tse Wei Chen, Vediyappan Veeramani

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


We have successfully synthesized nanostructured cubic NiAl2O4 nanoparticles for the selective electrochemical determination of gallic acid (GA) and the prepared nanostructured composite material was characterized by (X-ray diffraction, Fourier transform infrared spectroscopy, and field-emission scanning electron microscopy analyses. The cubic NiAl2O4 nanoparticles had average sizes of 26 - 30 nm as calculated from XRD and SEM measurements, respectively. GA-detection performance was also evaluated by cyclic voltammetry and amperometry method. NiAl2O4 glassy carbon electrode showed excellent performance in GA detection with a linear range, detection limit (SNR = 3 sb/S), limit of quantitation (LOQ = 10 sd/S) and sensitivity value of 0.03 - 551.18 μM, 0.018 μM, 0.057 μM and 9.019 μM mA-1 cm-2, respectively. The GA sensor was also used in real-sample analysis using food samples, and results showed the practicability of the proposed sensor.

Original languageEnglish
Pages (from-to)B29-B34
JournalJournal of the Electrochemical Society
Issue number2
Publication statusPublished - 2019

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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