Nickel/Nickel Phosphide Core-Shell Structured Nanoparticles: Synthesis, Chemical, and Magnetic Architecture

被引：51

作者：

Zheng, Xianfeng ^{[1
]}

Yuan, Songliu ^{[1
]}

Tian, Zhaoming ^{[1
]}

Yin, Shiyan ^{[1
]}

He, Jinhua ^{[1
]}

Liu, Kuili ^{[1
]}

Liu, Li ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2009年 / 21卷 / 20期

关键词：

FERROMAGNETIC FEPT NANOPARTICLES; NICKEL PHOSPHIDE; METAL PHOSPHIDES; LOW-TEMPERATURE; NANOCRYSTALS; SEPARATION; STABILITY; CATALYSTS; FILMS; NI3P;

D O I：

10.1021/cm901322x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Discrete, magnetically recyclable, and oxidation-resistant nanoparticles with nickel/nickel phosphide core-shell structure were synthesized through surface-phosphatizing Ni nanoparticles using triphenylphosphine as the phosphorus source. The Ni2P shell thickness was tunable by changing the reaction time in the mild temperature organic solution. And it was shown that the chemical architecture of core-shell can be useful to prepare Ni3P nanogranular films through the chemical combination of Ni2P shell with inner Ni during annealing. The core-shell magnetic architecture can also be helpful in improving the magnetically thermal stability through the effective influence of surface anisotropy after magnetic surface modification. The mechanism could be used to guide the synthesis and application of similar core-shell structured nanomaterials.

引用

页码：4839 / 4845

页数：7

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