A facile gas-templating method was developed to realize the synchronous nano-structuring and S-doping of g-C₃N₄ in one step. It uses the bottom-placed (NH₄)₂SO₄ as a bi-functional gas template source and doping agent to transform the up-placed melamine into S-doped g-C₃N₄ nanosheets (SCN-20). SCN-20 is much superior to the counterpart synthesized from the mixed melamine and (NH₄)₂SO₄, and shows a highly improved efficiency 8.4 times that of bulk g-C₃N₄ in visible-light photocatalytic H₂ evolution. The improved performance mainly benefits from the enlarged specific surface area, enhanced light absorption and improved separation efficiency of photo-induced charge carriers. This work may inspire the facile synthesis of other nanostructured and doped g-C₃N₄.

开发了一种简便的气体模板化方法，可实现一步实现gC ₃ N ₄的同步纳米结构和S掺杂。它使用底部放置的（NH ₄）₂ SO ₄作为双功能气体模板源和掺杂剂，将上部放置的三聚氰胺转变为S掺杂的gC ₃ N ₄纳米片（SCN-20）。SCN-20优于由混合三聚氰胺和（NH ₄）₂ SO ₄合成的对应物，并且在可见光光催化H _2中显示出高得多的效率，是块状gC ₃ N _4的8.4倍。演化。改善的性能主要得益于扩大的比表面积，增强的光吸收和改善的光诱导电荷载流子的分离效率。这项工作可能会启发其他纳米结构和掺杂的gC ₃ N ₄的轻松合成。