In recent years, a new large family of two dimensional transition metal carbides, carbonitrides, and nitrides, so-called MXenes, have grabbed considerable attention, owing to their many fascinating physical and chemical properties that are closely related to the rich diversity of their elemental compositions and surface terminations. In particular, it is easy for MXenes to form composites with other materials such as polymers, oxides, and carbon nanotubes, which further provides an effective way to tune the properties of MXenes for various applications. Not only have MXenes and MXene-based composites come into prominence as electrode materials in the energy storage field as is widely known, but they have also shown great potential in environment-related applications including electro/photocatalytic water splitting, photocatalytic reduction of carbon dioxide, water purification and sensors, thanks to their high conductivity, reducibility and biocompatibility. In this review, we summarize the synthesis and properties of MXenes and MXene-based composites and highlight their recent advances in environment-related applications. Challenges and perspectives for future research are also outlined.

中文翻译：

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MXene和基于MXene的复合材料：合成，性能和与环境相关的应用

近年来，由于新的二维过渡金属碳化物，碳氮化物和氮化物大家族，即所谓的MXene，引起了相当大的关注，因为它们的许多引人入胜的物理和化学性质与其元素的丰富多样性密切相关。成分和表面终止。特别是，MXene易于与其他材料（例如聚合物，氧化物和碳纳米管）形成复合材料，这进一步为调整MXene的性能提供了一种有效的方法，可用于各种应用。众所周知，不仅MXenes和MXene基复合材料在储能领域中成为电极材料，而且在与环境相关的应用中也显示出巨大潜力，包括电/光催化水分解，由于具有高电导率，可还原性和生物相容性，因此可以光催化还原二氧化碳，水净化和传感器。在本文中，我们总结了MXenes和MXene基复合材料的合成和性能，并重点介绍了它们在与环境相关的应用中的最新进展。还概述了未来研究的挑战和前景。