Microwave-absorbing properties of silver nanoparticle/carbon nanotube hybrid nanocomposites

Melvin, Gan Jet Hong; Ni, Qing‐Qing; Suzuki, Yusuke; Natsuki, Toshiaki

doi:10.1007/s10853-014-8229-9

Cited by 124 publications

(66 citation statements)

References 31 publications

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“…Both of AgNP-1 and AgNP-2 shows the 6.0 eV difference between the binding energy of Ag 3d 5/2 and Ag 3d 3/2 shown in Fig. 3a, which is characteristic of metallic Ag 3d states [28]. In Fig.…”

Section: Structural Analysis Of Silver Nanoparticlesmentioning

confidence: 85%

Different surface properties of l-arginine functionalized silver nanoparticles and their influence on the conductive and adhesive properties of nanosilver films

Liu

Wang

et al. 2015

J Mater Sci: Mater Electron

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The green synthesis of silver nanoparticles using L-arginine as protective and reductive agent has been investigated with -silver nitrate and silver acetate as silver precursors-by a facile and environmentally benign ''singlestep one-pot approach''. Silver nanoparticles synthesized from silver nitrate and silver acetate were named AgNP-1 and AgNP-2, respectively. AgNP-1 and AgNP-2 have similar morphology and size distribution, and both are water dispersible and ultra-stable. However, the nanosilver films made by the two kinds of conductive inks showed very distinct conductive and adhesive properties. FT-IR and X-ray photoelectron spectroscopy were used to characterize the surface properties of silver nanoparticles-the bonding types between silver nanocrystal and L-argininewhich were closely related to the conductive and adhesive properties of nanosilver films. Besides, the probable complexation mechanism of Ag ions with L-arginine and their subsequent reduction to Ag nanoparticles were studied. Finally, stable aqueous nanosilver dispersion with concentration of 20 wt% was produced to fabricate patterns by blade coating. The resistivity of nanosilver films sintered at 170°C for 60 min is 3.8 lX cm and its adhesion can reach 4A, which facilitate their use in printed electronics.

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Section: Structural Analysis Of Silver Nanoparticlesmentioning

confidence: 85%

Different surface properties of l-arginine functionalized silver nanoparticles and their influence on the conductive and adhesive properties of nanosilver films

Liu

Wang

et al. 2015

J Mater Sci: Mater Electron

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“…Among the materials mentioned earlier, the combination of more than one material has been found as an effective method to realize EMW absorber material with higher performance. [24][25][26][27][28][29][30][31][32][33] The combination of magnetic and dielectric materials such as Co/MWCNTs, 24,25 27 maximum RL is observed to be À10.8 dB at 14.4 GHz. RL maxima of À33 dB (at 2.7 GHz) and À24 dB (at 2.7 GHz) were achieved for 0.5 and 1.5 wt.…”

Section: Introduction Ementioning

confidence: 99%

Influence of NiFe Alloy Nanopowder on Electromagnetic and Microwave Absorption Properties of MWCNT/Epoxy Composite

et al. 2016

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Nanocomposite absorbers based on dielectric/magnetic materials are prepared by in situ incorporation of MWCNTs and NiFe alloy nanopowder into epoxy matrix. SEM micrographs and EDAX studies of these nanocomposites clearly revealed the incorporation of MWCNTs/NiFe nanoparticles in the epoxy matrix. Dielectric measurement revealed that the real part of permittivity and permeability of NiFe-filled MWCNT composites increased with an increase in NiFe concentration. The consolidated loss tangent values revealed that the total losses were highest for 15% of NiFe alloy nanopowder, thus accounting for the highest absorption loss. The two-layer RAS composed of NiFe alloy nanopowder-filled MWCNTs/epoxy composite achieves a minimum reflection loss of À12 dB (95% of absorption) in the range of 8.2-9.8 GHz and a maximum peak of À19 dB at 8.2 GHz with a thickness of 4 mm for 15 wt% NiFe alloy nanopowder MWCNTs/epoxy composites. In addition, À10 dB absorption bandwidths of composite material are <2 GHz, i.e., 8.2-9.8 GHz. Microwave absorption was attributed to both the dielectric and magnetic nature of MWCNTs and NiFe alloy nanopowder. The frequency of microwave absorption complies with the quarter wavelength (k/4) matching model.

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“…Nonmagnetic/dielectric particles with heterogeneous structure, e.g. TiC/C nanocubes [9], Multi-walled carbon nanotubes (MWCNTs)/TiC [10], MWCNTs grafted Ag nanoparticles [11] and ZnO coated CNT [12], can offset the shortages of the magnetic materials and show good EM wave absorbing abilities, because of their dielectric multi-polarizations in heterogeneous interfaces. But little work in relation to TiC/Ti particles has been reported in detail on the synthesis, microstructure and properties.…”

Section: Introductionmentioning

confidence: 99%

Controlled fabrication of TiC nanocrystal clusters on surface of Ti particles for application in electromagnetic wave absorption

Yuan

Cheng

Zhang

2015

Journal of Alloys and Compounds

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Microwave-absorbing properties of silver nanoparticle/carbon nanotube hybrid nanocomposites

Cited by 124 publications

References 31 publications

Different surface properties of l-arginine functionalized silver nanoparticles and their influence on the conductive and adhesive properties of nanosilver films

Different surface properties of l-arginine functionalized silver nanoparticles and their influence on the conductive and adhesive properties of nanosilver films

Influence of NiFe Alloy Nanopowder on Electromagnetic and Microwave Absorption Properties of MWCNT/Epoxy Composite

Controlled fabrication of TiC nanocrystal clusters on surface of Ti particles for application in electromagnetic wave absorption

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