Organic heterostructure modified carbon nitride as apprehension for Quercetin Biosensor

Asif Hayat, Z. A. Alrowaili, T. A. Taha, Javid Khan, Ikram Uddin, Tariq Ali, Fazal Raziq, Ikram Ullah, Ashiq Hayat, Arkom Palamanit, Ahmad Irfan, Wasim Ullah Khan

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


An electrochemical quercetin (Q.R.) sensor based on carbon nitride (CN) copolymerized with 2,6-diaminoantandantquinone (DAQ) was assembled. The product has a humongous texture and excellent processability. The as-synthesized samples with uniform surface distribution were characterized by UV-Vis-spectroscopy, PL, XPS NMR, EPR, XRD, FT-IR, BET, and SEM. Furthermore, samples were electrochemically pickled in 0.1 MPBS solution via cyclic voltammetry (CV) for Q.R. electrochemical response, interference research, electrochemical active surface determination, stability, photocurrent and EIS. It was found that current response surges in a linear way with increasing Q.R. concentration from 0.015 µM to 260 µM with less than 2 s of response time and a recognition limit of 0.0025 µM. To assess this sample's feasibility to be used as a sensor, Q.R. content was determined in different real samples comprising green drink, fresh apple, lamella, and reasonable results were achieved. The current study proposed a new approach for identifying Q.R. as well as a novel breed of electrochemical detecting material.
Original languageEnglish (US)
JournalSynthetic Metals
StatePublished - Aug 1 2021
Externally publishedYes

ASJC Scopus subject areas

  • Materials Chemistry
  • Mechanics of Materials
  • Metals and Alloys
  • Mechanical Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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