All
All

What are you looking for?

All
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

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

  • R&D category

  • CEP classification - main branch

    CF - Physical chemistry and theoretical chemistry

  • CEP - secondary branch

    CH - Nuclear and quantum chemistry, photo chemistry

  • CEP - another secondary branch

  • 10402 - Inorganic and nuclear chemistry
    10403 - Physical chemistry

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