Novel tubular graphitic carbon nitride has been successfully prepared via electrospinning technology, high temperature calcination technology, a vapor deposition reaction method and the method of acid removal, and in this process, Al₂O₃ fibers used as a template can help achieve the controllable preparation of GCNTs. Structural characterization results reveal that the as-prepared sample has the same composition as bulk graphitic carbon nitride and verify the well-defined tubular morphology of the graphitic carbon nitride tubes, which have a diameter of about 270 nm and a wall thickness of 30 nm. With regard to the photocatalytic activity of the sample, the degradation of organic dyes under visible light irradiation was carried out and cycling experiments were conducted, and the results indicated that the prepared sample has visible light catalytic activity and great stability. The specific tubular structure of graphitic carbon nitride will provide more active sites and higher reaction efficiency with potential application to waste treatment. When applied as an electrocatalyst in the oxygen evolution reaction (OER), GCNTs deliver a current density of 10 mA cm⁻² at an overpotential of 360 mV with a Tafel slope of only 40 mV dec⁻¹, and demonstrate excellent long term durability.

中文翻译：

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叠层gC ₃ N ₄纳米片用于增强光催化活性和析氧反应性能 的连续管的新型合成

通过静电纺丝技术，高温煅烧技术，气相沉积反应方法和除酸方法成功制备了新型管状石墨碳氮化物，在此过程中，制备了Al ₂ O _3。用作模板的纤维可以帮助实现GCNT的可控制备。结构表征结果表明，所制备的样品具有与本体石墨氮化碳相同的组成，并验证了石墨氮化碳管的轮廓分明的管状形态，其直径约为270 nm，壁厚为30 nm。关于样品的光催化活性，在可见光照射下进行了有机染料的降解，并进行了循环实验，结果表明所制备的样品具有可见光催化活性和良好的稳定性。石墨氮化碳的特殊管状结构将提供更多的活性位点和更高的反应效率，并有可能应用于废物处理。在360 mV的过电势下具有^-2的电势，Tafel斜率仅为40 mV dec ^-1，并且表现出出色的长期耐久性。