Ultrathin rhodium nanosheets
Ultrathin rhodium nanosheets
复制标题
超薄铑纳米片
DOI：
10.1038/ncomms4093
复制
发表时间：
2014-01-01
影响因子：
16.6
通讯作者：
Li, Yadong
中科院分区：
文献类型：
--
作者：
Duan, Haohong;Yan, Ning;Li, Yadong
尽管类石墨烯材料的制造和应用取得了重大进展，但制备在物理、化学和材料科学方面具有巨大潜在应用的单层金属材料仍然是一个挑战。在这里，我们报告了使用简便的溶剂热方法制备聚（乙烯基吡咯烷酮）支撑的单层铑纳米片。原子力显微镜显示铑纳米片的厚度<4 Å。电子衍射和 X 射线吸收光谱测量表明铑纳米片由平面单原子层铑片组成。密度泛函理论研究表明，单层 Rh 纳米片涉及 δ 键合框架，它与聚（乙烯基吡咯烷酮）配体一起稳定单层结构。聚（乙烯基吡咯烷酮）支撑的单层铑纳米片代表了一类金属二维结构，可能会激发物理、化学和材料科学的进一步基础性进展。
Despite significant advances in the fabrication and applications of graphene-like materials, it remains a challenge to prepare single-layered metallic materials, which have great potential applications in physics, chemistry and material science. Here we report the fabrication of poly(vinylpyrrolidone)-supported single-layered rhodium nanosheets using a facile solvothermal method. Atomic force microscope shows that the thickness of a rhodium nanosheet is <4 Å. Electron diffraction and X-ray absorption spectroscopy measurements suggest that the rhodium nanosheets are composed of planar single-atom-layered sheets of rhodium. Density functional theory studies reveal that the single-layered Rh nanosheet involves a δ-bonding framework, which stabilizes the single-layered structure together with the poly(vinylpyrrolidone) ligands. The poly(vinylpyrrolidone)-supported single-layered rhodium nanosheet represents a class of metallic two-dimensional structures that might inspire further fundamental advances in physics, chemistry and material science.