Original title: Nanostrukturní oxid titaničitý s řízenou morfologií: Příprava, charakterizace, aplikace
Translated title: Organized Nanostructured TiO2 Materials: Synthesis, Characterization, Applications
Authors: Zukalová, Markéta ; Rathouský, Jiří (advisor) ; Mička, Zdeněk (referee) ; Šubrt, Jan (referee)
Document type: Doctoral theses
Year: 2008
Language: eng
Abstract: CONCLUSIONS It has been known for a long time that material properties change on the nanoscale and are different from those of single crystals or conventional microstructured, monolithic or composite materials32. The presented thesis aimed at demonstration of the diversity in these properties for various morphologies of TiO2. Despite the fact that the chemical composition is identical, the structure of different morphologies matters and it is respon-sible for their specialty. The successfully mastered syntheses of desirable particle size materials open the pathway towards applications taking advantage of size dependent properties. DSC employing 2μm mesoporous TiO2 film as a photoanode exhibited the solar conversion efficiency as high as 4.63% due to the large surface area (roughness fac-tor). Optimized pore size together with the framework consisting of anatase nanocrystals are responsible for the high dye adsorption capacity improving the performance. Incorporating an additional inverse opal layer in DSC represents an example of its further possible upgrade. This optimized set up can increase the short circuit photocurrent effi-ciency of this device of about 26 % (Ref.39). Owing to the diffusion coefficient of an order of 10-13 cm2/s for microcrystalline spinel and even less for nanocrystalline spinel...

Institution: Charles University Faculties (theses) (web)
Document availability information: Available in the Charles University Digital Repository.
Original record: http://hdl.handle.net/20.500.11956/2575

Permalink: http://www.nusl.cz/ntk/nusl-293534


The record appears in these collections:
Universities and colleges > Public universities > Charles University > Charles University Faculties (theses)
Academic theses (ETDs) > Doctoral theses
 Record created 2017-04-25, last modified 2022-03-04


No fulltext
  • Export as DC, NUŠL, RIS
  • Share