Preparation and characterization of monometallic (Au) and bimetallic (Ag/Au) modified-titania photocatalysts activated by visible light - Publikacja - MOST Wiedzy

Wyszukiwarka

Preparation and characterization of monometallic (Au) and bimetallic (Ag/Au) modified-titania photocatalysts activated by visible light

Abstrakt

The Au-TiO2 and Ag/Au-TiO2 nanoparticles have been prepared using a water-in-oil microemulsion system of water/AOT/cyclohexane and water/Triton X-100/cyclohexane. The obtained photocatalysts were subsequently characterized by a BET method, DRS spectroscopy, X-ray photoelectron emission spectroscopy (XPS), scanning transmission electron microscopy (STEM) and X-ray powder diffraction analysis (XRD). For gold-doped titanium (IV) oxide nanoparticles the effect of reducing agent and stabilizer on gold particles size and photocatalytic activity were observed. The effect of crystalline form of TiO2 and gold nanoparticles size on photocatalytic activity of Au-TiO2 and Ag/Au-TiO2 in visible light were also investigated. The photocatalytic activity of noble metals modified-TiO2 powders under visible light irradiation was estimated by measuring the decomposition rate of phenol in an aqueous solution. The best photocatalytic activity revealed samples with large gold particles (∼90 nm) deposited on small titania nanoparticles. It was also found that the bimetallic samples (Ag/Au-TiO2) showed a higher photodegradation rate in visible region than monometallic photocatalysts.

Cytowania

  • 1 9 0

    CrossRef

  • 1 8 9

    Web of Science

  • 2 0 6

    Scopus

Cytuj jako

Pełna treść

pełna treść publikacji nie jest dostępna w portalu

Słowa kluczowe

Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
APPLIED CATALYSIS B-ENVIRONMENTAL nr 101, strony 504 - 514,
ISSN: 0926-3373
Język:
angielski
Rok wydania:
2011
Opis bibliograficzny:
Zielińska-Jurek A., Kowalska E., Sobczak J., Lisowski W., Ohtani B., Zaleska-Medynska A.: Preparation and characterization of monometallic (Au) and bimetallic (Ag/Au) modified-titania photocatalysts activated by visible light// APPLIED CATALYSIS B-ENVIRONMENTAL. -Vol. 101, nr. iss. 3-4 (2011), s.504-514
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.apcatb.2010.10.022
Weryfikacja:
Politechnika Gdańska

wyświetlono 139 razy

Publikacje, które mogą cię zainteresować

Meta Tagi