Improvement of g-C3N4 photocatalytic properties using the Hummers method

In this study, graphitic C3N4 (g-C3N4) with high photocatalytic properties to methylene blue (MB) was synthesized by treating the bulk g-C3N4 using the Hummers method. The bulk g-C3N4 was obtained by calcining dicyandiamide. The g-C3N4 treated by the Hummers method (E-g-C3N4) was characterized and utilized for the photocatalytic removal of MB. The results showed that the Hummers treatment exfoliated the nanosheets bulk g-C3N4 into nanorods and improved the dispersion of E-g-C3N4 in an aqueous solution. It also distinctly enhanced the photocatalytic activity of g-C3N4 to MB, i.e., the removal efficiency increased from 38.45% for the bulk g-C3N4 to 96.61% for the E-g-C3N4. (C) 2016 Published by Elsevier Inc.

在本研究中，通过使用Hummers法处理块状石墨相氮化碳（g - C₃N₄）合成了对亚甲基蓝（MB）具有高光催化性能的石墨相氮化碳。块状g - C₃N₄是通过煅烧双氰胺获得的。对经Hummers法处理的g - C₃N₄（E - g - C₃N₄）进行了表征，并将其用于光催化去除MB。结果表明，Hummers处理使块状g - C₃N₄纳米片剥离成纳米棒，并改善了E - g - C₃N₄在水溶液中的分散性。它还显著提高了g - C₃N₄对MB的光催化活性，即去除效率从块状g - C₃N₄的38.45%提高到E - g - C₃N₄的96.61%。（C）2016由爱思唯尔公司出版