Preparation, characterization and microwave absorption properties of barium-ferrite-coated fly-ash cenospheres

Li, Qin; Pang, Jianfeng; Wang, Bing; Tao, Dejing; Xu, Xiaotian; Sun, Li; Zhai, Jianping

doi:10.1016/j.apt.2012.07.004

Cited by 52 publications

(28 citation statements)

References 32 publications

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“…3A. In TiO [26,35]. Fly ash loaded TiO 2 nanofiber exhibited extra peaks at 2θ different value for mullites and quartz [31] which confirm the formation of nanocomposites.…”

Section: Resultsmentioning

confidence: 58%

Preparation and photocatalytic activity of fly ash incorporated TiO2 nanofibers for effective removal of organic pollutants

Saud¹,

Pant²,

Chae³

et al. 2015

Ceramics International

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“…3A. In TiO [26,35]. Fly ash loaded TiO 2 nanofiber exhibited extra peaks at 2θ different value for mullites and quartz [31] which confirm the formation of nanocomposites.…”

Section: Resultsmentioning

confidence: 58%

Preparation and photocatalytic activity of fly ash incorporated TiO2 nanofibers for effective removal of organic pollutants

Saud¹,

Pant²,

Chae³

et al. 2015

Ceramics International

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“…% RE powder is 1.64 times greater than the pure PU nanofiber, as shown in Table 1, and it plays an important role in reducing the VOCs [21]. On the other hand, in the chemical adsorption capacity, the RE elements have a certain VOC absorption capacity that has been reported by other researchers [36,37,38,39]. In combination with the physical absorption capacity and the chemical adsorption capacity of the PU/RE nanofibrous membranes, the PU/RE-50 had the highest VOC absorption capacity.…”

Section: Resultsmentioning

confidence: 80%

Fabrication of Functional Polyurethane/Rare Earth Nanocomposite Membranes by Electrospinning and Its VOCs Absorption Capacity from Air

Choi

2017

Nanomaterials

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Volatile organic compounds (VOCs) are a source of air pollution and are harmful to both human health and the environment. In this study, we fabricated polyurethane/rare earth (PU/RE) composite nanofibrous membranes via electrospinning with the aim of removing VOCs from air. The morphological structure of PU/RE nanofibrous mats was investigated using field emission scanning electron microscopy (FE-SEM), fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) experimental analyses. A certain amount of RE (up to 50 wt. % compared to PU pellets) nanoparticles (NPs) could be loaded on/into PU fibers. The tensile strength of PU/RE nanofibrous membranes decreased slightly with the increasing RE powder content. The PU nanofiber containing 50 wt. % RE powder had the smallest fiber diameter of 356 nm; it also showed the highest VOC absorption capacity compared with other composite membranes, having an absorption capacity about three times greater than pure PU nanofibers. In addition, all of the PU/RE nanofibrous membranes readily absorbed styrene the most, followed by xylene, toluene, benzene and chloroform. Therefore, the PU/RE nanofibrous membrane can play an important role in removing VOCs from the air, and its development prospects are impressive because they are emerging materials.

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“…To reveal the microwave absorption properties of the assynthesized composite microspheres, the reflection loss (RL) values of Ni microspheres and core-shell Ni/SnO 2 composite microspheres were stimulated based on the Þand permittivity e r ¼ e 0 À je 00 ð Þat a given frequency and thickness layer according to the transmit line theory, which is summarized as the following equations [20][21][22] …”

Section: Resultsmentioning

confidence: 99%

Enhanced microwave absorption capabilities of Ni microspheres after coating with SnO2 nanoparticles

Zhao

Shao

Fan

et al. 2015

J Mater Sci: Mater Electron

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Ni microspheres were prepared by a solvothermal reduction method, and then coated by SnO 2 nanoparticles to form core-shell structured Ni/SnO 2 composite microspheres. The microstructure and electromagnetic properties of the samples were investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscope, energy disperse X-ray spectrometry and a network analyzer. The Ni/SnO 2 composite microspheres show better microwave absorption property than that of Ni microspheres. A minimal reflection loss as low as -21.7 dB was observed at 8.6 GHz with the thickness of 3 mm. The enhanced microwave absorption performances of Ni/SnO 2 composite microspheres can be attributed to good electromagnetic impedance match, geometrical factors, and unique core-shell structure. Moreover, the efficient complementarities between magnetic loss and dielectric loss can also contribute to the microwave absorption.

show abstract

Preparation, characterization and microwave absorption properties of barium-ferrite-coated fly-ash cenospheres

Cited by 52 publications

References 32 publications

Preparation and photocatalytic activity of fly ash incorporated TiO2 nanofibers for effective removal of organic pollutants

Preparation and photocatalytic activity of fly ash incorporated TiO2 nanofibers for effective removal of organic pollutants

Fabrication of Functional Polyurethane/Rare Earth Nanocomposite Membranes by Electrospinning and Its VOCs Absorption Capacity from Air

Enhanced microwave absorption capabilities of Ni microspheres after coating with SnO2 nanoparticles

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