The metal-free, polymeric semiconductor graphitic carbon nitride (g-CN) family is an emerging class of materials and has striking advantages compared to other semiconductors, i.e. ease of tunability, low cost and synthesis from abundant precursors in a chemical environment. Efforts have been done to improve the properties of g-CN, such as photocatalytic efficiency, designing novel composites, processability and scalability towards discovering novel applications as a remedy for the problems that we are facing today. Despite the fact that the main efforts to improve g-CN come from a catalysis perspective, many fundamental possibilities arise from the special colloidal properties of carbon nitride particles, from synthesis to applications. This review will display how typical colloid chemistry tools can be employed to make ‘better g-CNs’ and how up to now overseen properties can be levered by integrating a colloid and interface perspective into materials chemistry. Establishing a knowledge on the origins of colloidal behavior of g-CN will be the core of the review.

无金属的聚合物半导体石墨碳氮化物（g-CN）系列是新兴的材料类别，与其他半导体相比具有显着的优势，即易调谐性，低成本以及在化学环境中由大量前体合成的优点。为了改善g-CN的性质，已经进行了许多努力，例如光催化效率，设计新颖的复合材料，可加工性和可扩展性，以发现新颖的应用，以此来解决我们今天面临的问题。尽管事实上从催化的角度出发来改善g-CN的主要努力，但从合成到应用，氮化碳颗粒的特殊胶体性质仍产生了许多基本的可能性。这篇评论将展示如何使用典型的胶体化学工具来制造“更好的g-CN”，以及如何通过将胶体和界面视角整合到材料化学中来利用到目前为止的监督特性。建立有关g-CN胶体行为起源的知识将是本综述的核心。