MXene, a new type of two-dimensional materials, have been demonstrated as one of the best photothermal materials owing to their strong light-matter interaction and high photothermal conversion efficiency in recent years. Herein, we report the intriguing light-to-heat conversion property of vanadium carbide (V₂C) MXene under irradiation of millisecond laser pulse. Unlike the typical photothermal materials, the V₂C MXene not only converts the incident laser energy to heat by the physical photothermal effect, but also triggers the exothermic oxidation of the V₂C MXene. The oxidation could be greatly promoted with addition of plasmonic Au nanorods (Au NRs) for light absorption enhancement. Owing to the unique light-to-heat conversion property, the Au NRs/V₂C MXene membrane could serve as high temperature pulse (HTP) generators that is proposed for numerous applications with high demand for immediacy. As a proof-of concept application, Au NRs/V₂C MXene membrane was applied for laser ignition of the high energy density materials, such as 2,4,6,8,10,12-(hexanitrohexaaza)cyclododecane (HNIW or CL-20). An improved ignition performance, in terms of lowered laser threshold, is achieved as compared to the state-of-the-art light-to-heat conversion materials.

MXene是一种新型的二维材料，由于其强光-物质相互作用和高光热转换效率，近年来被证明是最好的光热材料之一。_{在此，我们报告了在毫秒激光脉冲照射下碳化钒 (V 2} C) MXene的有趣的光热转换特性。与典型的光热材料不同，V ₂ C MXene 不仅通过物理光热效应将入射的激光能量转化为热能，还引发了 V ₂ C MXene 的放热氧化。添加等离子金纳米棒 (Au NRs) 可以大大促进氧化，以增强光吸收。由于独特的光热转换特性，Au NRs/V₂ C MXene 膜可用作高温脉冲 (HTP) 发生器，适用于对即时性要求很高的众多应用。作为概念验证应用，Au NRs/V ₂ C MXene 膜被应用于高能量密度材料的激光点火，例如 2,4,6,8,10,12-(六硝基六氮杂)环十二烷 (HNIW 或 CL -20)。与最先进的光热转换材料相比，在降低激光阈值方面实现了改进的点火性能。