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报道了一种不同尺寸多孔六边形α-Fe2O3纳米颗粒的简单、高产合成方法。对所合成的多孔纳米材料进行了X射线衍射、X射线光电子谱、激光喇曼光谱、场发射扫描电镜和透射电子显微镜的表征。所得结果都表明所合成出来的样品为高选择性的多孔六边形α-Fe2O3纳米颗粒。通过系统地控制实验条件,研究了反应时间、铁盐的种类、反应物的起始浓度对所合成样品的影响。通过对所得实验结果的系统对比和分析,给出了该种结构α-Fe2O3纳米颗粒的形成机制。因而,在此报道了一种简单(仅需FeCl3.6H2O和NH4HCO3两种反应物)、一步、经济、可重复性高的多孔六边形α-Fe2O3纳米颗粒的高产合成方案,并且该方案不需要使用任何有机溶剂。
A simple and high-yield synthesis method of porous hexagonal α-Fe2O3 nanoparticles with different sizes was reported. The synthesized porous nanomaterials were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, laser Raman spectroscopy, field emission scanning electron microscopy and transmission electron microscopy. The results obtained show that the synthesized samples are highly selective porous hexagonal α-Fe2O3 nanoparticles. By systematically controlling the experimental conditions, the effects of reaction time, the type of iron salt and the initial concentration of reactants on the synthesized samples were studied. Through the systematic comparison and analysis of the obtained experimental results, the formation mechanism of α-Fe2O3 nanoparticles with this kind of structure was given. Thus, there is reported a simple and high-yield synthesis scheme of porous hexagonal α-Fe2O3 nanoparticles which is simple (only two kinds of reactants of FeCl3.6H2O and NH4HCO3), one-step, economical and reproducible, and this scheme does not require You need to use any organic solvent.