Fabrication and Characterization of Sulphur‐doped Graphitic Carbon Nitride Nanosheets as a Highly Selective and Ultrasensitive Electrochemical Sensor for Detection of 2,4‐Dinitrophenol in Real Gym Supplements

Abstract

Herein, an effective template assisted calcination procedure has been adopted to synthesize the Sulphur-doped graphitic carbon nitride (S X GCN). Furthermore, the S X GCN/GCE was then utilized for the electrochemical determination of 2,4-Dinitrophenol (2,4-DNP). It has been inferred that among the variously prepared S X GCN (x = 0 %, 20 %, 40 %, 60 %, 80 %, and 100 %), S 80 GCN afforded the excellent electrochemical response for detection of 2,4-DNP. The synthesized S X GCN/GCE (x = 80 %) demonstrates with a low detection limit of 0.9083 μM with linear range of 1-90 μM. Furthermore, the practical application of this sensor was successfully proved by detecting spiked 2,4-dinitrophenol in a real gym supplements sample.

CuX/Sulfur-Doped C3N4 Nanocomposite-Modified Glassy Carbon Electrode for Electrochemical Detection of Dopamine

“…A facile and efficient calcination-assisted technique was employed for the synthesis of S-doped g-C 3 N 4 . This involved a modification of an improved gas templating method. , Initially, 0.0198 M melamine, 0.0792 M ammonium chloride, and 0.0792 M thiourea were thoroughly ground using a pestle and mortar. Next, the obtained mixture was placed in an alumina crucible sealed with a lid and then subjected to calcination at 550 °C for 4 h. After cooling to room temperature, a yellow-colored compound was obtained and designated as s-C 3 N 4 .…”

“…Notably, S-doping has proven to be beneficial in narrowing down the band gap and significantly enhancing the electrocatalytic and photocatalytic activity of g-C 3 N 4 because of the specific electronic structure of sulfur, which can promote the redistribution of spin and charge densities. S-doped g-C 3 N 4 has gained considerable interest because of its strong ionic conductivity, favorable electronic structure, improved electron transport rate, and large specific surface area. − …”