Application of the laser pyrolysis to the synthesis of SiC, TiC and ZrC pre-ceramics nanopowders

Leconte, Y.; Maskrot, Hicham; Combemale, L.; Herlin‐Boime, Nathalie; Reynaud, C.

doi:10.1016/j.jaap.2006.11.009

Cited by 46 publications

(23 citation statements)

References 23 publications

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“…For example, laser pyrolysis has been used for the synthesis of various kinds of materials such as carbides [11,12], nitrides [13], oxides [14][15][16][17] or silicon [18], using ethylene, ammonia or silane as both absorbing and precursor compounds. Such materials covered numerous applications related to mechanical properties enhancement, photovoltaics, energy storage, labelling for bio-medical application and sensors.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Carbon/Nitrogen/Iron Based Nanoparticles by Laser Pyrolysis as Non-Noble Metal Electrocatalysts for Oxygen Reduction

Pérez

Jorda

Bonville

et al. 2018

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This paper reports original results on the synthesis of Carbon/Nitrogen/Iron-based Oxygen Reduction Reaction (ORR) electrocatalysts by CO 2 laser pyrolysis. Precursors consisted of two different liquid mixtures containing FeOOH nanoparticles or iron III acetylacetonate as iron precursors, being fed to the reactor as an aerosol of liquid droplets. Carbon and nitrogen were brought by pyridine or a mixture of pyridine and ethanol depending on the iron precursor involved. The use of ammonia as laser energy transfer agent also provided a potential nitrogen source. For each liquid precursor mixture, several syntheses were conducted through the step-by-step modification of NH 3 flow volume fraction, so-called R parameter. We found that various feature such as the synthesis production yield or the nanomaterial iron and carbon content, showed identical trends as a function of R for each liquid precursor mixture. The obtained nanomaterials consisted in composite nanostructures in which iron based nanoparticles are, to varying degrees, encapsulated by a presumably nitrogen doped carbon shell. Combining X-ray diffraction and Mossbauer spectroscopy with acid leaching treatment and extensive XPS surface analysis allowed the difficult question of the nature of the formed iron phases to be addressed. Besides metal and carbide iron phases, data suggest the formation of iron nitride phase at high R values. Interestingly, electrochemical measurements reveal that the higher R the higher the onset potential for the ORR, what suggests the need of iron-nitride phase existence for the formation of active sites towards the ORR.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Carbon/Nitrogen/Iron Based Nanoparticles by Laser Pyrolysis as Non-Noble Metal Electrocatalysts for Oxygen Reduction

Pérez

Jorda

Bonville

et al. 2018

Self Cite

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“…Many routes were developed to synthesize powders -Selfpropagated High-temperature Synthesis (SHS) reaction, [5][6][7][8] laser pyrolysis, [9][10][11][12][13] fusion synthesis by arc-melting, 14 mechanosynthesis [15][16][17] or thin films by Chemical Vapour Deposition (CVD 18,19 ). Each of these synthesis routes presents both advantages and drawbacks, but they are generally used to produce limited quantities of carbides.…”

Section: Introductionmentioning

confidence: 99%

TEM study of the reaction mechanisms involved in the carbothermal reduction of zirconia

David

Trolliard

Gendre

et al. 2013

Journal of the European Ceramic Society

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“…The focused continuous-wave CO 2 laser radiation (400 W maximum output power, l = 10.6 mm) orthogonally crossed the gas flows emerging through three concentric nozzles [10][11][12][13][14]. Ethylene served as a carrier for the TiCl 4 vapors and as an energy transfer agent (it is excited by the absorption of the CO 2 laser radiation and transfers, by collision the absorbed energy towards the other reaction partners thus finally increasing the translation temperature of the whole system).…”

Section: Methodsmentioning

confidence: 99%

“…The laser pyrolysis is a versatile gas-phase method [11] which has been recently shown to be an excellent technique for the direct and continuous production of nanoparticulate materials. The processes are characterized by high-temperatures, fast heating rates and short reaction times which may confer to the synthesized nanoparticles chemical purity, low mean sizes and remarkable narrow size distributions [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of nitrogen-doped TiO2 nanoparticles by the laser pyrolysis of N2O-containing gas mixtures

Alexandrescu

Scarisoreanu

Morjan

et al. 2009

Applied Surface Science

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Application of the laser pyrolysis to the synthesis of SiC, TiC and ZrC pre-ceramics nanopowders

Cited by 46 publications

References 23 publications

Synthesis and Characterization of Carbon/Nitrogen/Iron Based Nanoparticles by Laser Pyrolysis as Non-Noble Metal Electrocatalysts for Oxygen Reduction

Synthesis and Characterization of Carbon/Nitrogen/Iron Based Nanoparticles by Laser Pyrolysis as Non-Noble Metal Electrocatalysts for Oxygen Reduction

TEM study of the reaction mechanisms involved in the carbothermal reduction of zirconia

Preparation and characterization of nitrogen-doped TiO2 nanoparticles by the laser pyrolysis of N2O-containing gas mixtures

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