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Electric-field-assisted swirl-flame ...
~
Kulkarni, Aditi.
Electric-field-assisted swirl-flame synthesis of high-porosity nanostructured titania (TiO2) films.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Electric-field-assisted swirl-flame synthesis of high-porosity nanostructured titania (TiO2) films.
作者:
Kulkarni, Aditi.
面頁冊數:
97 p.
附註:
Source: Masters Abstracts International, Volume: 54-04.
附註:
Adviser: Stephen D. Tse.
Contained By:
Masters Abstracts International54-04(E).
標題:
Mechanical engineering.
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1586212
ISBN:
9781321674194
Electric-field-assisted swirl-flame synthesis of high-porosity nanostructured titania (TiO2) films.
Kulkarni, Aditi.
Electric-field-assisted swirl-flame synthesis of high-porosity nanostructured titania (TiO2) films.
- 97 p.
Source: Masters Abstracts International, Volume: 54-04.
Thesis (M.S.)--Rutgers The State University of New Jersey - New Brunswick, 2015.
Nanostructured mesoporous metal-oxide films can be used in various applications, including dye-sensitized solar cells based on titania. Optimization of the properties of these films is crucial in improving their efficiency. Nanostructured TiO2 films with high uniformity and porosity are grown in a stagnation swirl flame setup under an applied electric field. The effects of external electric-field magnitude and polarity are studied for different substrate temperatures and precursor loading concentrations. The results show considerable differences in film characteristics, for differing electric fields, with more columnar structures and higher porosities under low voltages up to +/-400 V. The films have higher packing density at higher voltages of +/-800 V. At low substrate temperatures, the morphology and structure are more prominent owing to less on-substrate sintering of the nanoparticles. At low voltages, oppositely-charged particles will be attracted to the substrate increasing the electrophoretic velocity but decreasing the in-flame agglomeration; while at high voltages, the particles will be repelled and stay in the flame longer, thus increasing the in-flame agglomeration. A simple model is proposed which predicts the trend for deposition of particles and formation of nanostructured TiO2 films of a given morphology by balancing the effects of thermophoresis, electrophoresis, and Brownian motion of the particles. The model's trend for packing density agrees with the experiments.
ISBN: 9781321674194Subjects--Topical Terms:
190348
Mechanical engineering.
Electric-field-assisted swirl-flame synthesis of high-porosity nanostructured titania (TiO2) films.
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