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Pregled bibliografske jedinice broj: 1130686

Forced hydrolysis of FeCl3 solutions in the presence of Cr3+ ions


Robić, Marko; Ristić, Mira; Kuzmann, Erno; Homonnay, Zoltan; Krehula, Stjepko; Musić, Svetozar
Forced hydrolysis of FeCl3 solutions in the presence of Cr3+ ions // Journal of physics and chemistry of solids, 156 (2021), 110166, 11 doi:10.1016/j.jpcs.2021.110166 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 1130686 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Forced hydrolysis of FeCl3 solutions in the presence of Cr3+ ions

Autori
Robić, Marko ; Ristić, Mira ; Kuzmann, Erno ; Homonnay, Zoltan ; Krehula, Stjepko ; Musić, Svetozar

Izvornik
Journal of physics and chemistry of solids (0022-3697) 156 (2021); 110166, 11

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

Ključne riječi
Kinetics ; Mössbauer spectroscopy ; Oxide materials ; Scanning electron microscopy ; X-ray diffraction

Sažetak
Forced hydrolyses of FeCl3 solutions in the presence of Cr3+ ions without alkali addition were investigated at 160 and 200 °C. These precipitation systems were compared to corresponding reference systems. The isolated precipitates were characterized with XRD, 57Fe Mössbauer, FT-IR, FE SEM and photocatalytic measurements. Although chromium was not detected by EDS (Energy Dispersive X-ray Spectroscopy), the analysis of samples precipitated in the presence of Cr3+ ions showed several effects which can be attributed to the presence of these ions in the starting solutions. These effects are specifically well pronounced for samples obtained at 200 °C. For the highest concentration of Cr3+ ions and upon heating at 200 °C the transformation kinetics β-FeOOH to α-Fe2O3 was impeded. Relative intensities of prominent diffraction lines 104 and 110 of α-Fe2O3 changed as a result of the presence of Cr3+ ions. Changes in the size and formation of lemon-like particles instead of cube-like α-Fe2O3 particles were also noticed. The presence of Cr3+ ions in hydrolysing FeCl3 solution influenced the photocatalytic degradation of rhodamine B. Since no specific adsorption of Cr3+ ions occurred in the acidic pH medium, it was inferred that traces of Cr3+ ions enter into the structural tunnels of β-FeOOH crystals. The associates Cl−-Cr3+ are formed, which in the next step destabilize the crystal structure of β-FeOOH particles. Cr3+ ions leave the crystal structure upon dissolution of β-FeOOH. It can be assumed that α-Fe2O3 crystals start to grow on very fine and thin β-FeOOH crystallites which were not completely dissolved, but were previously affected by Cr3+ ions.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Ustanove:
Institut "Ruđer Bošković", Zagreb,
Hrvatska akademija znanosti i umjetnosti

Profili:

Avatar Url Mira Ristić (autor)

Avatar Url Svetozar Musić (autor)

Avatar Url Stjepko Krehula (autor)

Avatar Url Marko Robić (autor)

Citiraj ovu publikaciju

Robić, Marko; Ristić, Mira; Kuzmann, Erno; Homonnay, Zoltan; Krehula, Stjepko; Musić, Svetozar
Forced hydrolysis of FeCl3 solutions in the presence of Cr3+ ions // Journal of physics and chemistry of solids, 156 (2021), 110166, 11 doi:10.1016/j.jpcs.2021.110166 (međunarodna recenzija, članak, znanstveni)
Robić, M., Ristić, M., Kuzmann, E., Homonnay, Z., Krehula, S. & Musić, S. (2021) Forced hydrolysis of FeCl3 solutions in the presence of Cr3+ ions. Journal of physics and chemistry of solids, 156, 110166, 11 doi:10.1016/j.jpcs.2021.110166.
@article{article, year = {2021}, pages = {11}, DOI = {10.1016/j.jpcs.2021.110166}, chapter = {110166}, keywords = {Kinetics, M\"{o}ssbauer spectroscopy, Oxide materials, Scanning electron microscopy, X-ray diffraction}, journal = {Journal of physics and chemistry of solids}, doi = {10.1016/j.jpcs.2021.110166}, volume = {156}, issn = {0022-3697}, title = {Forced hydrolysis of FeCl3 solutions in the presence of Cr3+ ions}, keyword = {Kinetics, M\"{o}ssbauer spectroscopy, Oxide materials, Scanning electron microscopy, X-ray diffraction}, chapternumber = {110166} }
@article{article, year = {2021}, pages = {11}, DOI = {10.1016/j.jpcs.2021.110166}, chapter = {110166}, keywords = {Kinetics, M\"{o}ssbauer spectroscopy, Oxide materials, Scanning electron microscopy, X-ray diffraction}, journal = {Journal of physics and chemistry of solids}, doi = {10.1016/j.jpcs.2021.110166}, volume = {156}, issn = {0022-3697}, title = {Forced hydrolysis of FeCl3 solutions in the presence of Cr3+ ions}, keyword = {Kinetics, M\"{o}ssbauer spectroscopy, Oxide materials, Scanning electron microscopy, X-ray diffraction}, chapternumber = {110166} }

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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