The comparison of photocatalytic properties of colloidal Q-TiO2 particles and highly oriented layers of nanocrystalline anatase.
Project goals
Photocatalytic degradation on titanium dioxide represents an advanced technology for removing of organic and microbial contamination of water with the use of sunlight. It is based photogeneration of separated charges in the semiconductor phase. Their transfers across the interface can induce redox reactions in the aqueous phase leading up to the complete mineralization of present organic compounds. The aims of proposed project are (i) synthesis of nanocrystalline anatase in the form of both quantum sized particles, and highly ordered mesoscopic layers, (ii) characterization and comparison of their physical properties and photoactivity, (iii) investigation of the influence of charge transfer surface complexes on the photocatalytic activity of Ti02, (iv)kinetic and mechanistic study of the photocatalytic degradation of selected organic pollutants (e.g., pesticides from a group of 1,2,4-triazol). On the basis of found structures of degradation intermediates, a reaction mechanism of their formation
Keywords
Public support
Provider
Czech Science Foundation
Programme
Post-graduate (doctorate) grants
Call for proposals
Postdoktorandské granty 2 (SGA02002GA-PD)
Main participants
Ústav fyzikální chemie J. Heyrovského AV ČR, v. v. i.
Contest type
VS - Public tender
Contract ID
—
Alternative language
Project name in Czech
Srovn nˇ fotokatalytickěch vlastnostˇ koloidnˇch ź stic Q-TiO2 a vysoce orientovaněch vrstev nanokrystalick?ho anatasu
Annotation in Czech
Fotokatalytick degradace na oxidu titaniźit?m je novŘ vyvˇjen metoda pro odstraĺov nˇ organick?ho a mikrobiologick?ho zneźiçtŘnˇ vody s vyu§itˇm sluneźnˇho z ýenˇ. Je zalo§ena na fotogeneraci separovaněch n boj? v polovodiźov? ź stici. Jejich pýenos pýes f zov? rozhranˇ vyvol ve vodn? f zi redoxnˇ reakce, kter? nakonec vedou k Łpln? mineralizaci pýˇtomněch organickěch l tek. Cˇlem navrhovan?ho projektu je (i) synt?za nanokrystalick?ho anatasu ve formŘ velmi malěch ź stic Q-TiO2 v koloidnˇch roztocˇcha v podobŘ vysoce orientovaněch mesoskopickěch vrstev, (ii) charakterizace a srovn nˇ fyzik lnˇch vlastnostˇ a fotoaktivity obou tŘchto forem, (iii) studium vlivu povrchověch komplex? s pýenosem n boje na fotokatalytickou aktivitu TiO2, (iv) zkoum nˇ kinetiky a mechanismu fotokatalytick? degradace vybraněch organickěch çkodlivin (napý. pestidic? ze skupiny 1,2,4-triazolu). Na z kladŘ zjiçtŘn? struktury rozkladněch meziprodukt? bude navr§en pravdŘpodobně reakźnˇ mechanismus jejich vzniku,
Scientific branches
Completed project evaluation
Provider evaluation
U - Uspěl podle zadání (s publikovanými či patentovanými výsledky atd.)
Project results evaluation
Postdoktorandskě projekt byl pýedźasnŘ ukonźen po necelěch dvou letech trv nˇ z d?vodu n stupu na mateýskou dovolenou. Pýesto lze konstatovat, §e dˇlźˇ Łkoly odpovˇdajˇcˇ dobŘ ýeçenˇ byly splnŘny. Projekt je hodnotněm pýˇnosem k problematice fotokatalyso
Solution timeline
Realization period - beginning
Jan 1, 2001
Realization period - end
Jan 1, 2003
Project status
S - Stopped (prematurely terminated) multi-year project
Latest support payment
—
Data delivery to CEP
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data delivery code
CEP/2003/GA0/GA03GP/U/N/7:4
Data delivery date
Jun 15, 2009
Finance
Total approved costs
463 thou. CZK
Public financial support
315 thou. CZK
Other public sources
208 thou. CZK
Non public and foreign sources
0 thou. CZK
Basic information
Recognised costs
463 CZK thou.
Public support
315 CZK thou.
68%
Provider
Czech Science Foundation
CEP
CF - Physical chemistry and theoretical chemistry
Solution period
01. 01. 2001 - 01. 01. 2003