期刊
DIAMOND AND RELATED MATERIALS
卷 111, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2020.108214
关键词
G-C3N4 nanosheets; Semiconductors, large surface area; Photocatalysis
类别
资金
- Vietnam Academy of Science and Technology
This work focuses on synthesizing g-C3N4 nanosheets with a large surface area for enhanced solar light photocatalytic performance. The effects of annealing duration on the properties of g-C3N4 nanosheets were investigated, showing different morphologies and improved photocatalytic properties with increasing annealing time. The ultrathin g-C3N4 samples exhibited considerable potential in environmental remediation under solar irradiation.
In this work, we focus on synthesizing g-C3N4 nanosheets with a large surface area for enhanced solar light photocatalytic performance via a simple thermal polymerization of a low-cost urea precursor in enclosed conditions. The effects of annealing duration on the phase formation, structure, and optical and photocatalytic properties of the g-C3N4 nanosheets were investigated. The characterization analysis revealed that g-C3N4 nanosheets with different textures, including stacked-layer, porous and ultrathin morphologies, were obtained by controlling the annealing time. The prepared g-C3N4 samples offer a large specific surface area, narrow band gap and efficient separation of photogenerated electron-hole pairs with increasing annealing duration. The photo catalytic properties of the as-synthesized g-C3N4 samples were examined by measuring the degradation of rhodamine B (RhB) under simulated solar irradiation. With a 100% RhB solution (10 ppm) decomposed by exposure to solar irradiation for 60 min, ultrathin g-C3N4 shows considerable potential in practical applications concerning environmental remediation, especially in large-scale applications in industry.
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