Transition metal carbide or nitride (MXene) is regarded as next-generation two-dimensional (2D) materials for various applications, such as photocatalysis, electrocatalysis, supercapacitor, lithium-ion battery and biomedicine, because of its unique physicochemical properties. In photocatalysis, MXene could allow fast photogenerated charge carrier separation and provide abundant surface functional groups for light harvesting materials, rendering feasible the high photoconversion efficiency. Therefore, enormous theoretical and experimental studies have been recently made and shown the potential of MXene in various photocatalytic applications. Here, we provide a brief overview of the MXene-based materials, along with their functions in photocatalytic applications. Then, we summarize the recent advances and progresses of MXene-based photocatalysts, ranging from solar fuel production to pollutant degradation. Finally, we present concluding remarks and the outlooks for achieving highly efficient MXene-based photocatalysts.

过渡金属碳化物或氮化物（MXene）由于其独特的物理化学特性，被认为是用于各种应用的下一代二维（2D）材料，例如光催化，电催化，超级电容器，锂离子电池和生物医学。在光催化中，MXene可以快速分离光生载流子，并为光收集材料提供丰富的表面官能团，从而可以实现高光转化效率。因此，最近进行了大量的理论和实验研究，并显示了MXene在各种光催化应用中的潜力。在这里，我们简要介绍了基于MXene的材料及其在光催化应用中的功能。然后，我们总结了基于MXene的光催化剂的最新进展和进展，从太阳能燃料生产到污染物降解。最后，我们介绍了结束语和实现高效基于MXene的光催化剂的前景。