以Na₂SeO₃·5H₂O和RhCl₃·3H₂O为前驱体，三缩四乙二醇（TEG）为溶剂和还原剂，聚乙烯吡咯烷酮（PVP）为稳定剂，采用二步微波法成功制备了形貌单一、大小较为均匀的RhSe₂超薄纳米片，该纳米片呈皱褶状，平均粒径为400 nm。整个反应体系中，RhCl₃、Na₂SeO₃、PVP最适宜摩尔比为1∶2∶15。利用透射电子显微镜、扫描电子显微镜、X-射线光电子能谱仪（XPS）等技术对其结构进行了表征。

Uniform and well-defined ultrathin RhSe₂ nanosheets are prepared by means of a two-step microwave method with Na₂SeO₃·5H₂O and RhCl₃·3H₂O as precursors,tetraethylene glycol (TEG) as solvent and reducing agent,and polyvinylpyrrolidone (PVP) as a stabilizer.The nanosheets show a creased shape with an average size of 400 nm.During the reaction process,Na₂SeO₃ is firstly irradiated for 15 s,and then RhCl₃ is irradiated for 30 s.In the whole reaction system,the optimum molar ratio of RhCl₃:Na₂SeO₃:PVP is 1:2:15.The samples are characterized by transmission electron microscopy (TEM),scanning electron microscope (SEM) and X-ray photoelectron spectrometry (XPS).

唐鸿彬(1993-),男,硕士研究生,主要从事纳米材料的研究,1105539512@qq.com