Synthesis of Fe2–xMnxP Nanoparticles from Single-Source Molecular Precursors
Synthesis of Fe2–xMnxP Nanoparticles from Single-Source Molecular Precursors
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DOI：
10.1021/cm201435b
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发表时间：
2011-07
影响因子：
8.6
通讯作者：
Adam C Colson;K. Whitmire
中科院分区：
文献类型：
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作者：
Adam C Colson;K. Whitmire
研究了使用单源前体 FeMn(CO)8(μ-PR2)（R = Ph 或 R = H）制备 Fe2–xMnxP 纳米颗粒的可行性。 FeMn(CO)8(μ-PPh2)在十六胺和油酸存在下的溶液热分解导致形成FeO纳米颗粒，而FeMn(CO)8(μ-PH2)在类似条件下分解产生富铁的Fe2–xMnxP纳米颗粒。 FeMn(CO)8(μ-PH2) 在 573 K 下无溶剂分解，形成六方 FeMnP，这种结构通常仅在高于 1473 K 的温度下才能观察到。通过一系列不同稳定剂类型和数量的实验，研究了表面稳定剂在富铁 Fe2–xMnxP 纳米粒子生产中的作用，并有证据表明油酸负责锰原子的浸出或螯合。获得。从 Fe2–xMnxP 纳米粒子获得的 X 射线光电子能谱 (XPS) 数据和从...获得的粉末 X 射线衍射 (PXRD) 数据
The feasibility of preparing Fe2–xMnxP nanoparticles using the single-source precursors FeMn(CO)8(μ-PR2) (R = Ph or R = H) has been investigated. The solution-based thermal decomposition of FeMn(CO)8(μ-PPh2) in the presence of hexadecylamine and oleic acid resulted in the formation of FeO nanoparticles, while decomposition of FeMn(CO)8(μ-PH2) under similar conditions yielded iron-rich Fe2–xMnxP nanoparticles. Solventless decomposition of FeMn(CO)8(μ-PH2) at 573 K resulted in the formation of hexagonal FeMnP, a structure generally observed only at temperatures above 1473 K. The role of surface stabilizing agents in the production of iron-rich Fe2–xMnxP nanoparticles was examined through a series of experiments in which the type and quantity of stabilizers were varied, and evidence that oleic acid was responsible for the leaching or sequestration of manganese atoms was obtained. X-ray photoelectron spectroscopy (XPS) data acquired from the Fe2–xMnxP nanoparticles and powder X-ray diffraction (PXRD) data fro...