As one unique group of two-dimensional (2D) nanomaterials, 2D metal nanomaterials have drawn increasing attention owing to their intriguing physiochemical properties and broad range of promising applications. In this Review, we briefly introduce the general synthetic strategies applied to 2D metal nanomaterials, followed by describing in detail the various synthetic methods classified in two categories, i.e. bottom-up methods and top-down methods. After introducing the unique physical and chemical properties of 2D metal nanomaterials, the potential applications of 2D metal nanomaterials in catalysis, surface enhanced Raman scattering, sensing, bioimaging, solar cells, and photothermal therapy are discussed in detail. Finally, the challenges and opportunities in this promising research area are proposed.

中文翻译：

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二维金属纳米材料：合成，性质及应用

作为一类独特的二维（2D）纳米材料，二维金属纳米材料因其有趣的理化特性和广阔的应用前景而受到越来越多的关注。在本综述中，我们简要介绍了应用于2D金属纳米材料的一般合成策略，然后详细描述了归类于自上而下和自上而下两类的各种合成方法。在介绍了2D金属纳米材料独特的物理和化学特性之后，详细讨论了2D金属纳米材料在催化，表面增强拉曼散射，传感，生物成像，太阳能电池和光热疗法中的潜在应用。最后，提出了这一有前途的研究领域中的挑战和机遇。