论文标题
分层过渡金属碳化物的化学敏于介导的结构编辑
Chemical-scissor-mediated structural editing of layered transition metal carbides
论文作者
论文摘要
非van der Waals（VDW）层次材料的插入可以产生具有独特特性的新2D和3D材料，但很难实现。在这里，我们描述了3D非VDW分层三元碳化物和氮化物（最大相）及其2D VDW衍生物（MXENES）的结构编辑方案。化学剪刀和宾客介入剂介导了差距和物种交流阶段，创建了具有最大阶段的非常规元素和结构的大型分层材料，以及具有多功能终止物种的mxenes。通过金属剪刀去除表面终止和金属原子对碳化物层的缝合会导致从MXENES到最大相的反向转化，并导致金属裂化的2D碳化物。这种剪刀介导的结构编辑可以实现其他分层陶瓷的结构和化学剪裁。
Intercalation of non-van der Waals (vdW) layered materials can produce new 2D and 3D materials with unique properties, but it is difficult to achieve. Here, we describe a structural editing protocol for 3D non-vdW layered ternary carbides and nitrides (MAX phases) and their 2D vdW derivatives (MXenes). Gap-opening and species-intercalating stages were mediated by chemical scissors and guest intercalants, creating a large family of layered materials with unconventional elements and structures in MAX phases, as well as MXenes with versatile termination species. Removal of surface terminations by metal scissors and stitching of carbide layers by metal atoms leads to a reverse transformation from MXenes to MAX phases, and metal-intercalated 2D carbides. This scissor-mediated structural editing may enable structural and chemical tailoring of other layered ceramics.
