中文摘要：

利用光催化剂将太阳能转化为人类可以直接利用的能量,并用其解决地球资源的枯竭和生存环境的恶化是可再生清洁能源研究的一个方向。g-C3N4的独特结构赋予其良好的光催化性能,使之成为光催化领域的研究热点。目前在光催化领域,g-C3N4主要用于催化污染物分解、水解制氢制氧、有机合成及氧气还原。在实际应用中,为进一步提高g-C3N4的光催化效果,科研工作者开发了多种改进方法,例如物理复合改性、化学掺杂改性、微观结构调整等。本文主要论述了g-C3N4在光催化领域的应用以及光催化性能的改进方法,简要阐述了光催化和各种改进方法的机理,分析了目前g-C3N4在光催化领域面临的问题和挑战,展望了g-C3N4的应用前景。

英文摘要：

Based on photocatalysts, solar energy can be converted into the energy that human can directly utilize, so as to solve the problems such as the depletion of the Earth＇s resources and the deterioration of living environments. The unique structure of g-C3N4 gives it good photocatalytic performance. Its development and utilization have been a research hotspot recently. Generally, g-C3N4 can be used in the degradation of pollutions, hydrolysis to generate hydrogen and oxygen, organic synthesis and oxygen reduction. However, in practical, its performance is not satisfactory. Researchers have tried many new methods to improve its photocatalysis, which include physical coupling modification, chemical bonding modification and microstructural modification. The review summarizes its photocatalysis and improving methods, briefly illustrates the catalysis mechanism, and presents detailed discussions and analysis on the existing problems as well as potential applications.