Electrochemical simultaneous sensing of melatonin and ascorbic acid at a novel flexible B-RGO composite paper electrode

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Topçu E., Dağcı Kıranşan K.

DIAMOND AND RELATED MATERIALS, cilt.105, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 105
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.diamond.2020.107811
  • Dergi Adı: DIAMOND AND RELATED MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Boron oxide, Graphene paper, Electrochemical sensor, Ascorbic acid, Melatonin, REDUCED GRAPHENE OXIDE, URIC-ACID, LC-MS/MS, DOPAMINE, BORON, MODEL
  • Atatürk Üniversitesi Adresli: Evet

Özet

The present work demonstrates the fabrication and sensing performance of a free-standing paper electrode composed of boron oxide (B2O3) and graphene for the application of the simultaneous detection of melatonin (MEL) and ascorbic acid (AA). The flexible paper electrode (B-RGO) was fabricated through vacuum filtration of homogeneous composite dispersion (B-GO) consisting of B2O3 in GO, followed by chemical reduction with HI. The structural, chemical and morphological characterization of B-RGO composite paper was performed by using various techniques. This flexible paper electrode exhibited high sensitivity, wide linear range and low detection limit for the simultaneous determination of MEL and AA. The outstanding performance of B-RGO paper electrode could be attributed to the round-edged rod-like B2O3 structures between graphene layers, which provide an increment of the surface area and the electrochemical activity of the composite paper. Furthermore, this paper electrode showed high sensitivity and selectivity for the determination of MEL and AA in real sample analysis.