由有机和无机金属前躯体自蔓延高温合成碳包覆磁纳米粒子

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Self-sustaining high-temperature synthesis of carbon-encapsulated magnetic nanoparticles from organic and inorganic metal precursors

摘要: 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[Fe(CN)₆]）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。
- 自蔓延高温合成（SHS） /
- 燃烧合成 /
- 磁纳米粒子 /
- 碳纳米结构
Abstract: 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[Fe(CN)₆]) 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.
- Self-propagating high-temperature synthesis (SHS) /
- Combustion synthesis /
- Magnetic nanoparticles, Carbon nanostructures /