Developing novel methods to prepare g-C₃N₄ nanocomposites with controlled morphologies is highly desirable because this type of material has been widely studied as a promising photocatalyst. In this report, we develop a new and facile supramolecular hydrogel approach as a self-template to fabricate porous nanofiber-type Ag/g-C₃N₄ nanocomposites with significantly enhanced photocatalytic hydrogen evolution behaviors. The Ag/g-C₃N₄ nanofibers possess high specific surface areas, extended absorption in the visible light region, and promoted photoinduced electron–hole separation capability. The as-prepared porous fiber-type Ag/g-C₃N₄ exhibits highly efficient hydrogen evolution under visible-light illumination (625 μmol h^–1 g^–1), which could reach nearly 6.6 times that of the pristine g-C₃N₄. This work highlights a feasible but simple strategy for the preparation of g-C₃N₄ nanocomposite fibers with enhanced photocatalytic activity.

中文翻译：

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Ag / g -C ₃ N ₄多孔纳米纤维的基于凝胶的形态学控制，用于光催化制氢

迫切需要开发新颖的方法来制备具有可控形态的g -C ₃ N ₄纳米复合材料，因为这种材料已被广泛研究为有前途的光催化剂。在本报告中，我们开发了一种新的且简便的超分子水凝胶方法作为自模板，以制备具有显着增强的光催化氢释放行为的多孔纳米纤维型Ag / g -C ₃ N ₄纳米复合材料。所述银/克-C ₃ Ñ ₄纳米纤维具有高的比表面积，在可见光区域的吸收扩展以及促进的光致电子-空穴分离能力。制备的多孔纤维型Ag / g -C ₃ N ₄在可见光照射下（625μmolh ^–1 g ^–1）表现出高效的氢释放，可达到原始g -C的近6.6倍。₃ N ₄。这项工作突出了制备具有增强的光催化活性的g -C ₃ N ₄纳米复合纤维的可行但简单的策略。