介绍了一项由自蔓延高温合成(SHS)碳包覆磁纳米粒子的系统研究.采用还原剂NaN3和三种不同氧化剂-聚四氟乙烯、六氯乙烷和六氯苯,实施了SHS制备.研究了金属前躯体(Fe(CO)5或K3)对产物的得率、反应热、形貌、结构和磁性能的影响.结果表明:有机铁前躯体和C2Cl6氧化剂反应体系可获得磁性最佳、得率最高的产物.
A systematic study on the synthesis of carbon-encapsulated magnetic nanoparticles by self-sustaining high-temperature synthesis (SHS) is presented. The SHS was carried out using NaN3 as a reducer; and poly(tetrafluoroethene) (C2F4)n, hexachloroethane (C2Cl6) and hexachlorobenzene (C6Cl6) as three various oxidizers. The effect of metal precursor, (Fe(CO)5 or K3) on the yield, reaction heat, morphology, structure and magnetic properties of the products was investigated. The highest product yield with best magnetic characteristics was obtained from the organometallic iron precursor and C2Cl6 oxidizer.
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