Synthesis of nano-phase TiO2 crystalline films over premixed stagnation flames

Tolmachoff, Erik D.; Abid, Aamir D.; Phares, Denis J.; Campbell, Charles S.; Wang, Shuangfeng

doi:10.1016/j.proci.2008.06.052

Cited by 57 publications

(124 citation statements)

References 21 publications

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“…Finally, for a precursor concentration of 291.0 ppm, the film becomes so densely packed that the branching tree-like structures disappear. Similarly, Tolmachoff et al (2009) obtained dense-packed structures without discernible tree-like morphology for a high precursor concentration of 1070 ppm, using stagnation flat-flame synthesis.…”

Section: Resultsmentioning

confidence: 87%

“…porosity and SSA, which indicate their abilities for adsorption and diffusion of relevant species. Wang and co-workers (Tolmachoff et al, 2009) used laminar divergence-stabilized stagnation flames to attain uniform TiO 2 nanofilms with a porosity of 90%. Mädler et al (2006a) synthesized relatively-high-porosity (98%) Pt/SnO 2 nanofilms using spray flames impinging on a substrate.…”

Section: Introductionmentioning

confidence: 99%

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Direct synthesis of nanostructured TiO2 films with controlled morphologies by stagnation swirl flames

Zhang

Deng

et al. 2012

Journal of Aerosol Science

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Section: Resultsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Direct synthesis of nanostructured TiO2 films with controlled morphologies by stagnation swirl flames

Zhang

Deng

et al. 2012

Journal of Aerosol Science

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“…[79] Some methods, such as vapor-fed aerosol flame synthesis (VAFS: Figure 7) are also able to produce semiconductor nanoparticles of controlled size and crystallinity [80] but to date have not been utilized for direct deposition of sensing films. [81][82][83] …”

Section: Semiconductor Gas Sensorsmentioning

confidence: 99%

Semiconductor Gas Sensors: Dry Synthesis and Application

2010

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Since the development of the first chemoresistive metal oxide based gas sensors, transducers with innovative properties have been prepared by a variety of wet- and dry-deposition methods. Among these, direct assembly of nanostructured films from the gas phase promises simple fabrication and control and with the appropriate synthesis and deposition methods nm to μm thick films, can be prepared. Dense structures are achieved by tuning chemical or vapor deposition methods whereas particulate films are obtained by deposition of airborne, mono- or polydisperse, aggregated or agglomerated nanoparticles. Innovative materials in non-equilibrium or sub-stoichiometric states are captured by rapid cooling during their synthesis. This Review presents some of the most common chemical and vapor-deposition methods for the synthesis of semiconductor metal oxide based detectors for chemical gas sensors. In addition, the synthesis of highly porous films by novel aerosol methods is discussed. A direct comparison of structural and chemical properties with sensing performance is given.

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“…The formation of ultrafine PM is regarded as a process of 35 multi-component flame syntheses of mineral precursors, in which the competition between the 36 devolatilization and the coalescence of particles are of most significance. Finally, based on an approach 37 of time scale analysis, three characteristic times of minimum mean diameter of primary particles, the ini- 38 tial increment point of particle-phase sodium and the maximum devolatilization are found to be highly 39 correlated. 40 Ó 2015 Published by Elsevier Ltd. 41 42 43 44 1.…”

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confidence: 99%