Preparation, characterization and microwave absorbing properties of nano-sized yolk-in-shell Ni-P nanospheres

In this work, preparation of novel yolk-in-shell Ni-P nanospheres (YNNs) can be fulfilled through a facile method. Via adding sufficient amount of sodium dodecyl benzene sulfonate (SDBS) as a surfactant, stable and uniform Ni(OH)2 colloids were prepared firstly as precursors. Meanwhile, with adding...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2015-09, Vol.48 (35), p.355302-9
Main Authors: Wan, Lei, Zhang, Jinfeng, Chen, Yaqiong, Wang, Haoran, Hu, Wenbin, Liu, Lei, Deng, Yida
Format: Article
Language:English
Subjects:
Absorption
electro-magnetic interference
microwave absorption
Nanospheres
Nanostructure
Ni-P alloy
Nickel
Noise levels
Reflection
Sodium
Strings
Sulfonates
yolk-in-shell nanoparticles
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Summary:In this work, preparation of novel yolk-in-shell Ni-P nanospheres (YNNs) can be fulfilled through a facile method. Via adding sufficient amount of sodium dodecyl benzene sulfonate (SDBS) as a surfactant, stable and uniform Ni(OH)2 colloids were prepared firstly as precursors. Meanwhile, with adding a moderate amount of PVP, PdCl2 and NaH2PO2, yolk-in-shell and well-dispersed nanoparticles have been successfully fabricated. A string of means of characterizations were exploited to analyse their contents, structures and physical properties. In the present situation where the electro-magnetic interference (EMI) is ubiquitous, the YNNs have shown remarkable microwave-absorbing properties, with a minimum reflection loss ()  −39.9 dB at 1.7 mm of sample thickness. Besides, the of a sample is closely related to its thickness, which makes YNNs a potential EM absorber for the future.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/48/35/355302