Akademik Məlumat İdarəetmə Sistemi
Ionics, 2026 (SCI-Expanded, Scopus)
Currently, developing a narrow bandgap photocatalyst that can break down contaminants in direct sunlight is both important and motivating. The photocatalytic and antibacterial properties of a hybrid Co: ZnO/S@g-C3N4 nanocomposite were investigated in the present study. To determine the ideal doping, the photocatalytic efficiency of Co: ZnO (0.1,0.5, 1, 2, 4 wt%) nanoparticles (NPs) was measured in the first stage. In the second phase, the as-prepared 0.5% Co: ZnO NPs were dispersed over S@g-C3N4 nanosheets as a functioning constituent to produce a ternary heterostructure photocatalyst. Cobalt is used as a dopant on ZnO nanostructures. Undoped and doped NPs were prepared by wet chemical methods, and annealing was done at 550˚C with a 3˚C/minute ramping rate for 3 h. Since S@g-C3N4 and Co: ZnO have superior absorption and e−-h+ pair separation, the composite’s photocatalytic activity has been enhanced. The composite’s photocatalytic stability was tested by recyclability. The S@g-C3N4 nano sample was constructed by using thiourea. Various kinds of characterization practices were used to analyze the structural properties, like X-ray diffraction (XRD), SEM, photocurrent response, EDX, XPS, and Fourier Transform Infrared (FTIR). The photocatalytic response of all the samples was measured by the degradation of methylene blue (MB), employed as an organic pollutant. The 5% nanocomposite exhibited the best photocatalytic activity as the dye was completely degraded in 90 min. The Tauc plot indicates that 5% of nanocomposites showed a 1.7 eV band gap, while the band gap for 0.5% Co: ZnO was 2.35 eV. Similarly, the 5% nanocomposites show outstanding antibacterial and antifungal activities against all pathogenic strains that were tested.