Abstract MXene with two-dimensional layered structure and desirable electronic properties has emerged as a promising candidate to construct MXene-based composites towards various photocatalytic applications. As compared to the downhill-type photodegradation reactions, artificial photosynthesis often involves thermodynamic uphill reactions with a large positive change in Gibbs free energy. Recent years have witnessed the effectiveness of MXene in enhancing the photoactivity of MXene-based composites for solar fuel synthesis. In this review, we mainly focus on the applications of MXene-based composites for photocatalytic solar fuel production. We will start from summarizing the general synthesis of MXene-based composite photocatalysts. Then the recent progress on MXene-based composite photocatalysts for solar fuel synthesis, including water splitting for H2 production, CO2 reduction to solar fuels, and N2 fixation for NH3 synthesis is elucidated. The roles of MXene playing in improving the photoactivity of MXene-based composites in these applications have also been discussed. In the last section, perspectives on the future research directions of MXene-based composites towards the applications of artificial photosynthesis are presented.

中文翻译：

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用于太阳能燃料生产的基于 MXene 的复合材料回顾

摘要 具有二维层状结构和理想电子特性的 MXene 已成为构建 MXene 基复合材料以实现各种光催化应用的有希望的候选材料。与下坡型光降解反应相比，人工光合作用通常涉及热力学上坡反应，吉布斯自由能有较大的正变化。近年来见证了 MXene 在增强基于 MXene 的太阳能燃料合成复合材料的光活性方面的有效性。在这篇综述中，我们主要关注基于 MXene 的复合材料在光催化太阳能燃料生产中的应用。我们将从总结基于 MXene 的复合光催化剂的一般合成开始。然后是用于太阳能燃料合成的基于MXene的复合光催化剂的最新进展，包括用于 H2 生产的水分解、CO2 还原为太阳能燃料以及用于 NH3 合成的 N2 固定被阐明。还讨论了 MXene 在提高这些应用中基于 MXene 的复合材料的光活性方面的作用。在最后一节中，提出了基于 MXene 的复合材料在人工光合作用应用方面的未来研究方向。