NEW GRAPHITIC CARBON NITRIDE SYNTHESIS AND PHOTOCATALYTIC PROPERTIES.

BAKHROMOVA, I. A.; KATTAEV, N. T.; AKBAROV, KH. I.; RUZIMURADOV, O. N.

Background. In order to solve the problems associated with the shortage of energy resources and the environment, the use of graphitic carbon nitride (g-C3N4) is of particular relevance. Due to the presence of a specific structure, g-C3N4 exhibits photocatalytic activity in the visible light region. Purpose. Synthesis of the oxygen-doped allotropic form of graphitic carbon nitride, study of photocatalytic degradation of methylene blue. Methodology. The structural features of the prepared photocatalyst were studied by IR spectroscopy, SEM analysis, and diffuse reflectance spectroscopy. Changes in the concentration were controlled by the spectrophotometric method. Originality. A new derivative (O-g-C2N3) of the allotropic form of graphitic carbon nitride has been synthesized. Its structural-morphological and electronic properties of O-g-C2N3 have been determined. The photocatalytic activity was studied. It was shown that O-g-C2N3 exhibits the highest activity under sunlight. Findings. The low value of the photocatalyst band gap (2.6 eV) evidences photocatalytic activity of the synthesized new photocatalyst. As a result, O-g-C2N3 under visible light and sunlight photocatalytically decomposes methylene blue almost 100%.

NITRIDES; METHYLENE blue; PHOTOCATALYSTS; BAND gaps; VISIBLE spectra; REFLECTANCE spectroscopy

Uzbek Chemical Journal / O'Zbekiston Kimyo Jurnali, 2022, Issue 4, p9

0042-1707

Academic Journal