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Pt-functionalized S-doped g-C3N4 nanosheet for sensitive electrochemical determination of sulfamonomethoxine

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(3), pp.917-927
  • DOI : 10.1007/s42823-023-00606-z
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : June 4, 2023
  • Accepted : September 20, 2023
  • Published : April 11, 2024

Yang Yang 1 Hu Huali 2 Ai Jixing 2 Wang Hong 3 Du Haijun 2

1Chengdu University
2Guizhou Minzu University
3Kashi University

Accredited

ABSTRACT

Sulfamonomethoxine (SMM) is widely used to inhibit Gram-positive and Gram-negative bacteria, and improper use of SMM is detrimental to human health and ecological stability. Therefore, a sensitive determination method is of great importance for monitoring SMM residues in water, meat, milk, eggs, etc. Herein, a Pt-functionalized S-doped graphitic carbon nitride (Pt/S-g-C3N4) was constructed for the electrochemical determination of SMM. The as-developed Pt3/S3-g-C3N4 sensor showed a significant SMM determination performance. The electrochemical oxidation of SMM on Pt3/S3-g-C3N4/GCE involves two electron transference and was limited by a diffusion process. The as-developed Pt3/S3-g-C3N4/GCE sensor has good linearity in a wide range of 0.1–120 μmol/L and a remarkably low limit of detection (LOD) of 0.026 μmol/L for SMM determination. In addition, the sensor has high selectivity and anti-interference properties for SMM detection. Furthermore, this Pt3/S3-g-C3N4/GCE sensor has good reproducibility and stability. Moreover, the recoveries were in the range of 89.6–112.2% for the detection of the SMM in a real sample of egg. The proposed Pt3/S3-g-C3N4/GCE sensor shows great potential for practical applications in detecting trace amounts of antibiotics.

Citation status

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