Co2P nanostructures constructed by nanorods: hydrothermal synthesis and applications in the removal of heavy metal ions
作者:Yonghong Ni、Jun Li、Lina Jin、Jun Xia、Jianming Hong、Kaiming Liao
DOI:10.1039/b907788j
日期:——
In this paper, we report the successful synthesis of cobalt phosphide (Co2P) nanostructures built up of nanorodsvia a simple hydrothermal route using white phosphorus (WP), sodium hypophosphite and cobalt dichloride as starting reactants in the presence of polyvinylpyrrolidone (PVP, 30 K). The as-obtained product was characterized by means of X-ray powder diffraction (XRD), energy dispersive spectrometry (EDS), (high resolution) transmission electron microscopy (TEM/HRTEM), selected area electron diffraction (SAED) and field emission scanning electron microscopy (FESEM). It was found that sodium hypophosphite played an important role in the formation of the Co2P nanostructures. Some factors influencing the morphology of the product, including the reaction temperature, amount of sodium hypophosphite, surfactant, and so on, were investigated. The capacity of the product to remove heavy metal ions was also studied.
本文报告了在聚乙烯吡咯烷酮(PVP,30 K)存在下,以白磷(WP)、次磷酸钠和二氯化钴为起始反应物,通过简单的水热法路线成功合成了由纳米棒组成的磷化钴(Co2P)纳米结构。通过 X 射线粉末衍射(XRD)、能量色散光谱(EDS)、(高分辨率)透射电子显微镜(TEM/HRTEM)、选区电子衍射(SAED)和场发射扫描电子显微镜(FESEM)对得到的产物进行了表征。研究发现,次磷酸钠在 Co2P 纳米结构的形成过程中发挥了重要作用。研究了影响产物形态的一些因素,包括反应温度、次磷酸钠用量、表面活性剂等。此外,还研究了该产品去除重金属离子的能力。