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Structural Properties of Iron/Titanium Oxide Nanoparticles Synthesized by Sol-gel Method in the Presence of Poly(ethylene glycol)


Marić, Ivan; Gotić, Marijan; Jurkin, Tanja; Mikac, Lara; Tronc, Élisabeth; Ivanda, Mile
Structural Properties of Iron/Titanium Oxide Nanoparticles Synthesized by Sol-gel Method in the Presence of Poly(ethylene glycol) // Croatica Chemica Acta, 91 (2018), 4; 577-588 doi:10.5562/cca3441 (međunarodna recenzija, članak, znanstveni)


Naslov
Structural Properties of Iron/Titanium Oxide Nanoparticles Synthesized by Sol-gel Method in the Presence of Poly(ethylene glycol)

Autori
Marić, Ivan ; Gotić, Marijan ; Jurkin, Tanja ; Mikac, Lara ; Tronc, Élisabeth ; Ivanda, Mile

Izvornik
Croatica Chemica Acta (0011-1643) 91 (2018), 4; 577-588

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
TiO2 ; iron-doped ; iron/titanium oxide ; sol-gel ; PEG

Sažetak
Iron/Titanium oxide nanoparticles with initial molar ratio Fe/(Fe+Ti) = 0.05 (low loading of Fe in TiO2) and Fe/(Fe+Ti) = 0.15 (high loading of Fe in TiO2) were synthesized by a modified sol-gel procedure using Ti(IV)-isopropoxide, FeSO4 ∙ 7H2O and poly(ethylene glycol) (PEG) as starting material. The amount of doped iron strongly affected structural properties as well as the degree of dispersion of iron in the Fe- Ti-O system. The highly-doped sample contained poorly crystallized hydrated iron(III)- sulphates or basic iron(III)-sulphates in a considerable amount. The lowly-doped Fe-TiO2 sample contained about 22 wt % of brookite that had taken up iron virtually in the same proportion as anatase. Contrary to quasi- homogeneous distributions of iron in the lowly- doped Fe-TiO2 sample, the uptake of iron in the highly-doped Fe-TiO2 sample heated at 500 °C is significant, but anatase is free from iron, thus suggesting a heterogeneous distribution of iron. The photocatalytic activity of the highly-doped Fe-TiO2 sample was better than that of the lowly-doped Fe-TiO2 sample, but still below the photoactivity of Degussa P25 reference photocatalyst.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2014-09-7046 - Hibriridne silicijske nanstrukture za senzorik (Mile Ivanda, )

Ustanove
Institut "Ruđer Bošković", Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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