1997
DOI: 10.1006/jcis.1996.4558
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A Theoretical Study on Gas-Phase Coating of Aerosol Particles

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Cited by 20 publications
(18 citation statements)
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“…Ober, Ebert, and Buettner (1999) studied the coating of submicron SiO 2 (800 nm in diameter) particles with lithium iodide by heterogeneous condensation in an expanding nozzle ow. A series of studies were done at University of New Mexico on in situ high-temperature gas-phase coating of submicron TiO 2 particles with SiO 2 , Al 2 O 3 , ZrO 2 and the combination of any two (Jain, Fotou, & Kodas, 1996;Powell, Fotou, & Kodas 1997a, b;Fotou et al, 2000). The coating steps take place after the TiO 2 particles were formed.…”
Section: Introductionmentioning
confidence: 99%
“…Ober, Ebert, and Buettner (1999) studied the coating of submicron SiO 2 (800 nm in diameter) particles with lithium iodide by heterogeneous condensation in an expanding nozzle ow. A series of studies were done at University of New Mexico on in situ high-temperature gas-phase coating of submicron TiO 2 particles with SiO 2 , Al 2 O 3 , ZrO 2 and the combination of any two (Jain, Fotou, & Kodas, 1996;Powell, Fotou, & Kodas 1997a, b;Fotou et al, 2000). The coating steps take place after the TiO 2 particles were formed.…”
Section: Introductionmentioning
confidence: 99%
“…With respect to the formation mechanism of this kind core/shell nanostructure, three possible processes have been proposed now: (i) particles of one oxide deposit onto the surface of the other, then melt and flow along the surface to cover the entire particle; (ii) one oxide heterogeneously condenses on the surface of the other; (iii) particles of one oxide deposit uniformly onto the surface of the other, then fuse into a smooth coating layer [18,19]. In the current case, during the initial period of the reaction, TiO 2 can be formed in the form of molecules or clusters.…”
Section: Resultsmentioning
confidence: 99%
“…High scavenging efficiency can be achieved when the number of scavengers is large and the nominal size of the fine mode is small enough to result in large diffusivities (Friedlander et al, 1991, Jain et al, 1997. Hence, processing conditions should be chosen so that (i) the initial formation of the coarse mode results in a large number of scavengers and (ii) the formation of the bimodal size distribution and subsequent scavenging process occurs before the fine mode has grown significantly.…”
Section: Comparison With Previous Estimatesmentioning
confidence: 99%