Magnesiothermic reduction of rice husk ash for electromagnetic wave adsorption

Liu, Shuting; Yan, Kang-Kang; Zhang, Yuan hu; Jin, Shi-di; Ye, Ying; Chen, Xuegang

doi:10.1016/j.jmmm.2015.06.074

Cited by 22 publications

(7 citation statements)

References 46 publications

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“…Development of modern technology in electronic system and telecommunications has greatly increased the demand for electronic devices using 1-5 GHz range microwave radiation, which is resulting in serious electromagnetic interference (EMI) problems [1][2][3][4][5][6]. EMI causes device malfunctions, generates false images, and reduces the performance of the system-to-system coupling to a radar system.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, PVA could improve the permeability by interfacial adhesion forming a continuous network by utilization of the pore of AC as a trap of metallic magnetic particle (Fe) for stabilizing bonding at surface composition or valence state and will raise polarization relaxation to increase the permittivity [5][6][7][8][9][10]. The proposed method in the fabrication of nanocomposite Fe/AC/PVA materials in this study is relatively easy-to-handle and economic; the method can be seen clearly in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

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Nanocomposites Fe/Activated Carbon/PVA for Microwave Absorber: Synthesis and Characterization

Abdullah

Ilyas

Tahir

2018

Journal of Nanomaterials

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Nanocomposites, activated carbon/polyvinyl alcohol (AC/PVA) filled with Fe to form Fe/AC/PVA, were characterized by using X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and vector network analyzer (VNA). The crystal orientations from Fe are (104), (110), and (200) and the bonding formations of AC are O-H, C-H, and C=C show existence in nanocomposites, which may be due to the Fe that has been filled the pore of AC via a chemical bond. 20% AC (3 mm in thickness) in nanocomposites shows higher performance absorption for C-band (4.65 GHz) with maximum reflection loss of −32.5 dB.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanocomposites Fe/Activated Carbon/PVA for Microwave Absorber: Synthesis and Characterization

Abdullah

Ilyas

Tahir

2018

Journal of Nanomaterials

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“…[38c] In addition, the high internal porosity of the RH-silicon NSs could allow for volume expansion without rupturing the solid-electrolyte interphase at the outer surface,l eading to high reversibility and high cycling stability. [38b] In addition to the above performances,t he RH-NSs also show many other prominent properties,s uch as electromagnetic wave absorption for RH-derived carbon/silica nanocomposites, [59] insulating properties for RH-silica NSs, [7b] and superior mechanical properties for silicon carbide NSs consisting of whiskers and nanorods. [46] 4.…”

Section: Properties Of Rh-nssmentioning

confidence: 99%

Versatile Nanostructures from Rice Husk Biomass for Energy Applications

et al. 2018

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Converting biomass into valuable products has great benefits in terms of both economic and environmental considerations, and has attracted considerable attention in recent years. Rice husk biomass was initially utilized to produce bulk materials for conventional applications while a variety of advanced nanostructures (NSs) have been fabricated over the past few years. In addition to their low cost and environmental friendliness, RH-derived NSs (RH-NSs) exhibit versatile properties, which are promising for broad applications in various fields. In this Review, we summarize the latest research on RH-NSs, covering their design, fabrication, properties, and applications in the modern energy field. Based on the unique structure and components of RHs, a series of carbon/silicon-based novel NSs with outstanding performances have been exploited, which are difficult to be synthesized using conventional chemical reagents. We also discuss perspective uses of RH-NSs on the basis of the current research progress.

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“…The design of electromagnetic wave absorber is enhanced with material having electric or magnetic dipoles. Absorption properties of a material is usually analyzed and determined by two material parameters; permittivity and permeability [1][2]. Permittivity and permeability relate to a material's ability to transmit an electric field and magnetic field respectively.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Wave Absorption Properties of Novel Green Composites Coconut Fiber Coir and Charcoal Powder over X-band Frequency for Electromagnetic Wave Absorbing Applications

Yah

Rahim

Lee

et al. 2018

AEM

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This paper presents the electromagnetic wave (EW) absorption properties in terms of complex permittivity and permeability of novel green composites coconut fiber coir and charcoal powder materials. The samples were fabricated using the raw agricultural waste coconut fiber coir, charcoal powder, epoxy resin and hardener with varied composition. The dielectric properties of the materials were characterized using two-port waveguide measurement method over the X-band frequency (8.2 -12.4GHz). The average permittivity value measured is approximately 3.00 with 10wt% charcoal has the highest permittivity of 3.59. Apart from that, all samples exhibit good reflection loss of better than -25dB which means more than 99% absorption rate. The result shows the composite material is a promising organic material for electromagnetic absorber applications.

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Magnesiothermic reduction of rice husk ash for electromagnetic wave adsorption

Cited by 22 publications

References 46 publications

Nanocomposites Fe/Activated Carbon/PVA for Microwave Absorber: Synthesis and Characterization

Nanocomposites Fe/Activated Carbon/PVA for Microwave Absorber: Synthesis and Characterization

Versatile Nanostructures from Rice Husk Biomass for Energy Applications

Electromagnetic Wave Absorption Properties of Novel Green Composites Coconut Fiber Coir and Charcoal Powder over X-band Frequency for Electromagnetic Wave Absorbing Applications

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