Growth Mechanisms of Nanostructured Titania in Turbulent Reacting Flows
Author
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-10-01
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Titanium dioxide (titania) is used in chemical sensors, pigments, and paints andholds promise as an antimicrobial agent.
This is due to its photoinduced activity and,in nanostructured form, its high specific surface area.
Particle size and surface arearesult from the interplay of fluid, chemical, and thermal dynamics as well as nucleation,condensation and coagulation.
After nucleation, condensation, and coagulation arethe dominant phenomena affecting the particle size distribution.
Manufacture of nanostructured titania via gas-phase synthesis often occurs under turbulent flow conditions.
This study examines the competition between coagulation and condensation in thegrowth of nanostructured titania.
Direct numerical simulation is utilized in simulatingthe hydrolysis of titanium tetrachloride to produce titania in a turbulent, planar jet.
The fluid, chemical, and particle fields are resolved as a function of space and time.
As a result, knowledge of titania is available as a function of space, time, and phase(vapor or particle), facilitating the analysis of the particle dynamics by mechanism.
Results show that in the proximal region of the jet nucleation and condensation arethe dominant mechanisms.
However once the jet potential core collapses and turbulentmixing begins, coagulation is the dominant mechanism.
The data also shows that thecoagulation growth-rate is as much as twice the condensation growth-rate.
American Psychological Association (APA)
Garrick, Sean C.. 2015. Growth Mechanisms of Nanostructured Titania in Turbulent Reacting Flows. Journal of Nanotechnology،Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1069547
Modern Language Association (MLA)
Garrick, Sean C.. Growth Mechanisms of Nanostructured Titania in Turbulent Reacting Flows. Journal of Nanotechnology No. 2015 (2015), pp.1-10.
https://search.emarefa.net/detail/BIM-1069547
American Medical Association (AMA)
Garrick, Sean C.. Growth Mechanisms of Nanostructured Titania in Turbulent Reacting Flows. Journal of Nanotechnology. 2015. Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1069547
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1069547