Nano-MnFe2O4 powder synthesis by detonation of emulsion explosive

Wang, Xiaohong; Li, Xiao Jie; Yan, Hong; Li, Xue; Qu, Yandong; Sun, G. L.

doi:10.1007/s00339-007-4308-y

Cited by 17 publications

(9 citation statements)

References 9 publications

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“…Regarding the particles size of the as-detonated zirconia powder, the detonation approach is known to generate high pressures (GPa) and temperatures ( > 1000 °C) that are sui table to the gasification of the precursors and the formation of crystalline phases during the sub sequent condensation step [19,30-33,37,41]. More, the extremely high cooling rate of the detonation gaseous products, estimated as high as 10 9 °C/s due to the rapid expansion of the chemical species, impedes the growth of particles produced and consequently leads to the for mation of materials of nanoscale dimension [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. The use of water to cool down the detonation products (see Experimental section) effi ciently also acts to stop the growth of condensed species and thus controls the particles size in the nanoscale.…”

Section: M = Lm(-111) + Lm(lll) Lm(-111) + Lm(lll) + Lt(lol) (2)mentioning

confidence: 99%

Zirconia nanopowder synthesis via detonation of trinitrotoluene

Gibot

Vidal

Laffont

et al. 2020

Ceramics International

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Zirconium (IV) oxide nanopowder was successfully synthesized through the detonation of a mixture composed of 2,4,6 trinitrotoluene (TNT, C7H5N306) and zirconium sulfate tetrahydrate (Zr(S04)2•4H20) as the energetic material and ceramic precursor, respectively. TNT, one of the most popular explosives, is a secondary energetic molecule and exhibits high stability and low sensitivity toward extemal stresses, making its handling safe. After detonation of the energetic material/ceramic precursor mixture and purification of the detonation soot, a crystallized zirconium oxide (Zr02) powder composed of nanosized particles with a spherical morphology was produced and analysed by the usual characterization techniques (X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy and nitrogen physisorption). The reaction mechanism, con sidering the thermochemical aspect of the explosive, is offered. This approach could provide promising op portunities for the synthesis of various nano-sized oxide ceramic powders.

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Section: M = Lm(-111) + Lm(lll) Lm(-111) + Lm(lll) + Lt(lol) (2)mentioning

confidence: 99%

Zirconia nanopowder synthesis via detonation of trinitrotoluene

Gibot

Vidal

Laffont

et al. 2020

Ceramics International

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“…Wang et al obtained magnetic nano MnFe 2 O 4 powder by detonation of specially prepared emulsion explosives. 19 The synthesized nano ferrite has excellent magnetic properties. Ferrite absorbing materials have the disadvantages of narrow absorption band and high density.…”

Section: Introductionmentioning

confidence: 99%

Manganese waste liquid derived MnFe₂O₄/RGO fabric for microwave blocking, high stable strain and temperature sensing

Hong

Sun

Tao

et al. 2022

Journal of Industrial Textiles

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Herein, a MnFe2O4/RGO knitted fabric derived from manganese waste was constructed by a simple in-situ assembled coating method, involving the incorporation of Graphene Oxide (GO) and manganese ferrite nanoparticles on polyester fabric, followed reducing by hydrazine hydrate. The reuse of manganese waste from the preparation of GO can reduce chemical waste emissions and endow the absorption performance. The coated particles possess certain magnetism can be attracted and securely collected in seconds, which is convenient for recycling. This fabric gives well microwave absorption with the maximum reflection loss (RL) of −58.6 dB at 9.1 GHz by a thickness of 1.9 mm. In addition, this fabric presents high stable strain sensing under 1000 stretching and bending cycles. Meanwhile, the resistance-deformation-velocity relationship is provided based on the structure, for the analysis of electromechanical behaviors. Moreover, the fabric has the capability for temperature sensing (TCR=−0.738%/°C), and fire alarm. As such, this fabric can be promising alternatives for a wide application on motion and temperature sensing, microwave blocking.

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“…and mixed (LiMn 2 O 4 , MnFe 2 O 4 , SrAl 2 O 4 , etc.) oxides were, thus, synthesized from energetic charges made of RDX or ammonium nitrate (AN, NH 4 NO 3 ) as detonative compounds mixed with metallic salts as ceramic sources [5][6][7][8][9][10][11][12][13][14][15]. More recently, the TNT molecule was offered as an explosive source to synthesize zirconia nanopowder from polymer-coated zirconium sulfate tetra hydrate, and pure silicon carbide (SiC) nanoparticles were prepared by the detonation of a TNT/RDX energetic charge previously mixed with a preceramic polymer (polycarbosilane) [16,17].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Oxide Ceramics in Detonating Atmosphere

Gibot

2021

Ceramics

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A detonation process based on 2,4,6 trinitrotoluene (TNT), used as an energetic reagent, was successfully implemented in the synthesis of a series of metal oxide ceramics. TNT offers better physicochemical and mechanical properties than the energetic compounds traditionally used in such processes, thus offering safer handling and transport conditions. The experimental procedure, which consisted to of mixing the energetic molecule with a ceramic salt, was simple to perform. The detonation products were characterized by X-ray diffraction, scanning and transmission electron microscopies, energy dispersive X-ray spectroscopy and nitrogen physisorption. The as-synthesized ceramic powders (CeO2, HfO2, Nb2O5, and In2O3) were crystalline and made of nano-sized quasi-spherical particles. This investigation provides an enhanced detonation synthesis process for elaborating ceramics. The majority of the oxide materials mentioned in this study had never previously been prepared by the detonation process.

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Nano-MnFe2O4 powder synthesis by detonation of emulsion explosive

Cited by 17 publications

References 9 publications

Zirconia nanopowder synthesis via detonation of trinitrotoluene

Zirconia nanopowder synthesis via detonation of trinitrotoluene

Manganese waste liquid derived MnFe₂O₄/RGO fabric for microwave blocking, high stable strain and temperature sensing

Synthesis of Oxide Ceramics in Detonating Atmosphere

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Nano-MnFe2O4 powder synthesis by detonation of emulsion explosive

Cited by 17 publications

References 9 publications

Zirconia nanopowder synthesis via detonation of trinitrotoluene

Zirconia nanopowder synthesis via detonation of trinitrotoluene

Manganese waste liquid derived MnFe2O4/RGO fabric for microwave blocking, high stable strain and temperature sensing

Synthesis of Oxide Ceramics in Detonating Atmosphere

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Product

Resources

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Manganese waste liquid derived MnFe₂O₄/RGO fabric for microwave blocking, high stable strain and temperature sensing