Production of iron-oxide nanoparticles by laser-induced pyrolysis of gaseous precursors

Chemical Aerosol Engineering as a Novel Tool for Material Science: From Oxides to Salt and Metal Nanoparticles

“…Illumination of gaseous precursors by a laser results in a rapid temperature increase triggering the precursor decomposition. Examples include silicon nanoparticles from SiH 4 gas (Cannon et al 1982) and iron or iron oxide nanoparticles from gaseous Fe(CO) 5 (Majima et al 1994;Majima et al 1993;Martelli et al 2000). Advanced process reactor systems have been described by Gardner et al (2003) or Bi and Kambe (2001) and allow the use of liquid, vapor and aerosol precursor systems enabling the fabrication of nanomaterials of various compositions and relatively low cost.…”

Synthesis of nanometer alumina particles by plasma transferred arc alternative

“…Major efforts in nanoparticle synthesis can be grouped into three broad areas: sol-gel processing, 1 ball milling 2 and gas phase synthesis. [3][4] Gas to particle conversion refers to production of particles from individual atoms or molecules in the gas phase. The particle primary size is driven by the cooling of a supersaturated vapour, while their further growth strongly depends on the properties of the flow into which they are imbedded.…”

“…The particle primary size is driven by the cooling of a supersaturated vapour, while their further growth strongly depends on the properties of the flow into which they are imbedded. High temperatures and hence high energy sources such as, laser beams, 4 hot wall reactors or hydrocarbon flames are often necessary. In the current work, a transferred arc is used to produce nanometric alumina particles from the condensation of aluminium vapours obtained by controlled evaporation of the aluminium anode material, which becomes the solid precursor of the synthesis.…”

Synthesis of ultra fine particles by plasma transferred arc: Influence of anode material on particle properties

“…Therefore, to prepare small particles, it is mandatory to create a high degree of supersaturation, thereby inducing a high nucleation density and then immediately quench the system. High temperatures and hence high energy sources, such as hydrocarbon flames, 12 laser beam, [13][14][15] or Joule heating, are often necessary. [16][17][18] Nevertheless, with such techniques, production rates are poor.…”