Pregled bibliografske jedinice broj: 871040
Impact of cadmium and phosphate ions on the hematite nanorings formation
Impact of cadmium and phosphate ions on the hematite nanorings formation // Journal of molecular structure, 1140 (2017), 113-117 doi:10.1016/j.molstruc.2016.12.089 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 871040 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Impact of cadmium and phosphate ions on the hematite nanorings formation
Autori
Dražić, Goran ; Štefanić, Goran ; Jurkin, Tanja ; Gotić, Marijan
Izvornik
Journal of molecular structure (0022-2860) 1140
(2017);
113-117
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Hematite ; Akaganeite ; Phosphate ; Mossbauer ; Nanorings ; TEM
Sažetak
It has been suggested that the addition of divalent metal cations during the hydrothermal synthesis of hematite (a-Fe2O3) in the presence of phosphate ions has a strong impact on the hematite morphology, crystal growth and dissolution (Gotic et al., J. Mol. Struct. 993 (2011) 167). In this work, the same system was modified with divalent cadmium ions and the impacts of cadmium and phosphate ions on the hematite nanorings formation have been studied. It has been found that formed hematite and akaganeite (b-FeOOH) precipitates did not contain any trace of cadmium impurities. On the contrary, the modification with divalent cadmium cations changes the PO4 3 /Fe3þ molar ratio in the system. Upon the addition of cadmium ions the PO4 3 /Fe3þ molar ratio changes from 0.036 in a pure system to 0.051 in the cadmium modified system. The relative increase of phosphate concentration at early stage of precipitation induced the change of spindle to spherical morphology and formation of the poorly crystallised akaganeite-like phase. The appearance of akaganeite-like phase directly correlated with he delay in the crystallisation of hematite. Besides, the relative increase of phosphate concentration has the prevailing effect for the change of spindle to pseudosphere and nanotube to nanoring particle morphologies.
Izvorni jezik
Engleski
Znanstvena područja
Fizika, Kemija
Napomena
Http://dx.doi.org/10.1016/j.molstruc.2016.12.089
POVEZANOST RADA
Projekti:
098-0982904-2898 - Fizika i primjena nanostruktura i volumne tvari (Ivanda, Mile, MZOS ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb
Citiraj ovu publikaciju:
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