摩擦力显微镜研究Ti $_3$ C $_2$ T $_X$纳米片（MXene）的纳米固体润滑性能
The Potential of Ti$_3$C$_2$T$_X$ Nano-sheets (MXenes) for Nanoscale Solid Lubrication Revealed by Friction Force Microscopy
摘要：
Ti $_3$ C $_2$ T $_X$纳米片（MXene）是一类新兴的二维材料，具有在从纳米到宏观的长度尺度上用于能量存储、催化和摩擦电应用的突出潜力。尽管对这类新材料的兴趣迅速增加，但它们的纳米级摩擦特性，特别是它们在纳米级上的固体润滑潜力，尚未得到详细研究。在这个简短的通信中，我们提出了第一个结果MXene的纳米级摩擦特性，在一个孤立的Ti $_3$ C $_2$ T $_x$纳米片上通过摩擦力显微镜沉积在二氧化硅衬底上获得的摩擦地图的形式。我们的实验表明，少层Ti $_3$ C $_2$ T $_x$纳米片确实在纳米级上充当固体润滑剂，减少二氧化硅基底上的摩擦，尽管不如少层石墨烯有效。本文报道的结果为进一步研究Ti $_3$ C $_2$ T $_X$（MXene）纳米片实现的纳米级固体润滑铺平了道路。
英文摘要：
Ti$_3$C$_2$T$_X$ nano-sheets (MXenes) are an emerging class of two-dimensional materials with outstanding potential to be employed in energy storage, catalysis, and triboelectric applications, on length scales ranging from the nano- to macroscopic. Despite rapidly accelerating interest in this new class of materials, their nanoscale frictional properties and in particular, their potential for solid lubrication on the nanoscale, have not been explored in detail yet. In this short communication, we present the first results on the nanoscale frictional characteristics of MXenes, in the form of a friction map obtained on an isolated Ti$_3$C$_2$T$_x$ nano-sheet deposited on a silicon dioxide substrate via friction force microscopy. Our experiments reveal that few-layer Ti$_3$C$_2$T$_x$ nano-sheets indeed act as solid lubricants on the nanoscale, reducing friction on the silicon dioxide substrates, although not as effectively as few-layer graphene. The results reported here pave the way for further studies focusing on nanoscale solid lubrication achieved by Ti$_3$C$_2$T$_X$ (MXene) nano-sheets.
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