四面体Rh纳米颗粒的控制合成与表征

Controlled Synthesis and Characterization of Tetrahedral Rh Nanoparticles

以Na3RhCl6为前驱体、三缩四乙二醇(TEG)为还原剂和溶剂、聚乙烯吡咯烷酮(PVP)为稳定剂、葡萄糖为形貌控制剂,在Na3RhCl6∶PVP∶C6H12O6=1∶10∶40(物质的量比)时,于160℃油浴加热2h得到了形貌单一、大小均匀的四面体Rh纳米颗粒,并通过TEM、SEM、XRD、XPS对其结构进行了表征。在此过程中,葡萄糖在四面体Rh纳米颗粒的控制合成中起关键作用。

Well-defined tetrahedral Rh nanoparticles with uniform size were synthesized using Na3RhCl6 as a precursor,tetraethylene glycol（TEG）as both reducing agent and solvent,polyvinylpyrrolidone（PVP）as a stabilizer,glucose as a morphology control agent in the presence of an optimal molar ratio of 1∶10∶40for Na3RhCl6∶PVP∶C6H12O6 by oil-bath heating at 160 ℃ for 2h.Their structures were characterized by TEM,SEM,XRD and XPS.Glucose played an essential role in controlling the synthesis of tetrahedral Rh nanoparticles.