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- W4386052573 abstract "In this work, we report the effective fabrication of exfoliated graphitic carbon nitride (gCN) photocatalysts through thermal exfoliation utilizing melamine, urea, and a combination of the two as precursors. As fabricated photocatalysts were characterized by different analytical techniques like XRD, FT-IR, UV-DRS, BET, FE-SEM HRTEM and XPS. Combining the various findings, it found that the gCN synthesized from urea has a loose nanosheet-like structure with smaller lamellae and a high surface area with porosity. The specific surface area for U-gCN was observed to be 168.98 m2 g−1, which was nearly 10 times higher than that of M-gCN (≈14.56 m2 g−1). Band gap energies using Tauc plot were estimated to be 2.57 eV for M-gCN, 2.68 eV for UM-gCN, and 2.82 eV for U-gCN, difference in the band gap energies was due to the peak shift observed in UV-DRS spectra. It was observed that thermally exfoliated U-gCN nanosheets were observed to be 5 times more efficient (98.4% degradation in 60 min) than M-gCN and UM-gCN in the photo-degradation of Methylene blue (MB) dye. Similarly, U-gCN photocatalyst showed remarkable ability to degrade tetracycline (TC) drug and the results exhibited that the TC antibiotic was almost completely degraded within 60 min of light exposure, at a rate of 0.0065 min−1. Scavenger studies were also carried out to investigate the reactive species. Further the plausible degradation mechanism was studied by combining the results of Tauc plot and VB-XPS. Additionally, photocatalytic antibacterial experiments revealed that U-gCN have remarkable antibacterial activity against S. aureus bacteria. Overall, enormous thin sheet-like arrangement, porous structure (which leads to effective charge separation), high surface area and extended light absorption characteristics are all contributing factors for the remarkable photocatalytic efficiency of U-gCN." @default.
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- W4386052573 date "2023-10-01" @default.
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- W4386052573 title "Precursor-dependent fabrication of exfoliated graphitic carbon nitride (gCN) for enhanced photocatalytic and antimicrobial activity under visible light irradiation" @default.
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- W4386052573 doi "https://doi.org/10.1016/j.jclepro.2023.138538" @default.
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