Copper-carbon nanocomposites prepared by sold-phase pyrolysis of copper phthalocyanine

Manukyan, Aram; Mirzakhanyan, A. A.; Khachatryan, T. K.; Badalyan, G. R.; Абдулвахидов, К. Г.; Бугаев, Л. А.; Sharoyan, É. G.

doi:10.3103/s1068337212060084

Cited by 14 publications

(12 citation statements)

References 6 publications

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“…In this work the process of solid-phase pyrolysis of zinc-phthalocyanine was analogous to that described in [6][7][8][9][10] and corresponded to the following reaction: ISSN 1068-3372, Journal of Contemporary Physics (Armenian Academy of Sciences), 2016, Vol. 51, No.…”

Section: Methodsmentioning

confidence: 95%

“…One of convenient methods for producing the metal nanoparticles in carbon matrices is solid-phase pyrolysis of metal-phthalocyanines (MPc = MC 32 N 8 H 16 ), because they contain simultaneously the metal and carbon atoms (in the ratio 1:32) and can form the different metal-carbon structures with given characteristics (see, e.g., [6][7][8][9][10]). …”

Section: Introductionmentioning

confidence: 99%

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Characterization of zinc and zinc cyanide nanoparticles in carbon matrices prepared by solid-phase pyrolysis of zinc-phthalocyanine

et al. 2016

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Abstract⎯Using solid-phase pyrolysis of Zn-phthalocyanine (ZnC 32 H 16 N 8 ), we have prepared zinc and zinc cyanide nanoparticles in carbon matrices with a zinc concentration of 3 at %. The structure and composition of samples were investigated by the methods of scanning electron microscopy, X-ray diffraction, and Raman spectroscopy. It is shown that at low pyrolysis temperature (700°C) only the Zn nanoparticles are formed, whereas at higher temperature (900°C) a certain amount of Zn(CN) 2 nanoparticles are also synthesized. The mean diameter of nanoparticles is about 150 nm, and their size distribution has a logarithmically normal shape.

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Section: Methodsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Characterization of zinc and zinc cyanide nanoparticles in carbon matrices prepared by solid-phase pyrolysis of zinc-phthalocyanine

et al. 2016

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“…Earlier, the same method was applied to prepare Ni/C, Cu/C nanocomposites and Ni 1-x Cu x nanoalloys in different carbon matrices [10][11][12][13]. This method is notable for being simple, one-phase, with a high yield of the final product.…”

Section: Experimental Techniquementioning

confidence: 99%

Structure and magnetic properties of carbon microspheres prepared by solid-phase pyrolysis of organic compounds

Manukyan¹,

Mirzakhanyan²,

Khachaturyan³

et al. 2015

J. Contemp. Phys.

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Abstract⎯Carbon microspheres with a mean diameter of 3-3.5 µm were prepared by solid-phase pyrolysis of polyethylene and metal-free phthalocyanine. Morphology, structure and magnetic properties of the samples were investigated by electron microscopy, Raman spectroscopy, magnetometry and electron paramagnetic resonance. Carbon microspheres are composed of graphitic nanocrystallites with longitudinal sizes of 10-15 nm. The samples reveal strong paramagnetism, which in the case of metal-free phthalocyanine pyrolysis is 3 times higher (~5×10 19 spin/g) due to the unpaired spins of impurity nitrogen atoms.

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“…The method is simple, one-stage, safe and economical. The results of solid-phase pyrolysis of polycrystalline metal-phthalocyanine powders MPc [M(C 32 N 8 H 16 ), M = Ni, Cu, Fe, Co and Zn] are reported in [10][11][12]. We have also developed the method of solid phase pyrolysis of non-metallic phthalocyanine alloy H 2 Pc [H 2 (C 32 N 8 H 16 )].…”

Section: Introductionmentioning

confidence: 99%

FMR and EPR in Ni@C nanocomposites: Size and concentration effects

et al. 2017

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Ni@C nanoparticles encapsulated in carbon coating have been investigated depending on the size and concentration of Ni in carbon. The nanoparticles of nickel were prepared with the average diameters changing in a broad range of 4-45 nm, and the concentration of Ni in C varies in 2-12 wt%. To prepare the Ni@C nanocomposites the solid solutions of nickel phthalocyanine-metal-free phthalocyanine (NiPc) x (H 2 Pc) 1-x , 0 ≤ x ≤ 1 were synthesized and the solidphase pyrolysis of these compounds was performed. In the case of ultradispersive Ni nanoparticles (the interval of quantum dots is 1-10 nm), a considerable shift of the resonance field and broadening of resonance absorption field were revealed in the spectra of FMR at room temperature. The data were interpreted taking into account the essential contribution of the surface magnetic anisotropy, the magnetic field of which far exceeds the magnetic field of volume anisotropy.

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Copper-carbon nanocomposites prepared by sold-phase pyrolysis of copper phthalocyanine

Cited by 14 publications

References 6 publications

Characterization of zinc and zinc cyanide nanoparticles in carbon matrices prepared by solid-phase pyrolysis of zinc-phthalocyanine

Characterization of zinc and zinc cyanide nanoparticles in carbon matrices prepared by solid-phase pyrolysis of zinc-phthalocyanine

Structure and magnetic properties of carbon microspheres prepared by solid-phase pyrolysis of organic compounds

FMR and EPR in Ni@C nanocomposites: Size and concentration effects

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