石墨氮化碳 (g-C₃N₄) 具有出色的机械和热特性，使其成为一种有价值的材料，可用于光电转换器件、有机化合物合成的加速器、燃料电池应用或电源的电解质以及储氢物质和荧光检测器。它是使用不同的方法制造的，并且有多种形态和纳米结构，例如为不同目的而设计的零到三维。近年来关于 g-C₃N₄ 的报道很多，但缺乏涵盖纳米结构尺寸及其性质的全面综述。本文旨在对 g-C₃N₄ 的光催化和电催化用途提供基本和全面的了解。它通过涵盖合成方法、尺寸、形貌、应用和性能，重点介绍了 g-C₃N₄ 纳米结构设计的最新进展。除了总结之外，我们还将讨论挑战和前景。研究 g-C₃N₄ 纳米结构的各种应用的科学家、研究人员和工程师可能会发现我们的综述论文是有用的资源。

Graphitic carbon nitride (g-C₃N₄) exhibits great mechanical as well as thermal characteristics, making it a valuable material for use in photoelectric conversion devices, accelerator for the synthesis of organic compounds, electrolyte for fuel cell applications or power sources, as a hydrogen storage substance, and fluorescence detector. It is fabricated using different methods and there is a variety of morphology and nanostructures such as zero to three dimensions that have been designed for different purposes. There are many reports about g-C₃N₄ in recent years, but a comprehensive review which covers nanostructure dimensions and their properties are missing. This review paper aims to give basic and comprehensive understanding of the photocatalytic and electrocatalytic usages of g-C₃N₄. It highlights the recent progress of g-C₃N₄ nanostructure designing by covering synthesis methods, dimensions, morphologies, applications and properties. Along with the summary, we will also discuss the challenges and prospects. Scientists, investigators, and engineers looking at g-C₃N₄ nanostructures for a variety of applications might find our review paper to be a useful resource