Morphology tuning is one of the innovative techniques to overcome challenges of a pristine graphitic carbon nitride (g-C₃N₄) as a photocatalyst. In this study, a unique pipe-like C₃N₄ have been fabricated using a facile, environmentally friendly and scalable approach by treating dicyandiamide (DCDA) with ethylene glycol and nitric acid. The pipe-like C₃N₄ samples have been possessed unique structural morphology with enhanced visible light-harvesting ability, efficient charge separation and large surface area with more reactive sites. These enhanced properties of the pipe-like C₃N₄ have been exhibited superior complete photocatalytic degradation of methylene Blue (MB) within 30 min under visible light (λ > 420 nm) compared to the bulk C3N4. In addition, the pipe-like C₃N₄ have good photostability and efficiency (96%) and potential applications in other fields such as photoelectrochemistry, electrocatalysis, and optoelectronic devices.

中文翻译：

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独特的管状C3N4，具有增强的光催化降解有机污染物的能力

形态调整是克服原始石墨化碳氮化碳（gC ₃ N ₄）作为光催化剂的挑战的创新技术之一。在这项研究中，通过使用乙二醇和硝酸处理双氰胺（DCDA），采用一种简便，环保且可扩展的方法制造了独特的管状C ₃ N ₄。管状C ₃ N ₄样品具有独特的结构形态，具有增强的可见光捕获能力，有效的电荷分离和较大的表面积和更多的反应位。管状C ₃ N _4的这些增强的性能与本体C3N4相比，在可见光（λ> 420 nm）下30分钟内，亚甲基蓝（MB）具有优异的完全光催化降解能力。此外，管状C ₃ N ₄具有良好的光稳定性和效率（96％），并且在其他领域（如光电化学，电催化和光电器件）中具有潜在的应用前景。