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Pregled bibliografske jedinice broj: 787435

Formation and properties of nanostructured colloidal manganese oxide particles obtained through the thermally controlled transformation of manganese carbonate precursor phase


Škapin, Srečo; Čadež, Vida; Suvorov, Danilo; Sondi, Ivan
Formation and properties of nanostructured colloidal manganese oxide particles obtained through the thermally controlled transformation of manganese carbonate precursor phase // Journal of colloid and interface science, 457 (2015), 35-42 doi:10.1016/j.jcis.2015.06.041 (međunarodna recenzija, članak, znanstveni)


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Naslov
Formation and properties of nanostructured colloidal manganese oxide particles obtained through the thermally controlled transformation of manganese carbonate precursor phase

Autori
Škapin, Srečo ; Čadež, Vida ; Suvorov, Danilo ; Sondi, Ivan

Izvornik
Journal of colloid and interface science (0021-9797) 457 (2015); 35-42

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

Ključne riječi
Coalescence ; Manganese oxides ; Surface properties ; Morphology ; Structure

Sažetak
Structurally and morphologically different colloidal manganese oxide solids, including manganosite (MnO), bixbyite (Mn2O3) and hausmannite (Mn2+[Mn3+]2O4), were obtained through the initial biomimetically induced precipitation of a uniform, nanostructured and micron-sized rhodochrosite (MnCO3) precursor phase and their subsequent thermally controlled transformation into oxide structures in air and Ar/H2 atmospheres. The structures and morphology of the obtained precipitates were investigated using X-ray diffraction (XRD) and field-emission scanning electron microscopy (FESEM). Their surface properties were investigated by electrophoretic mobilities (EPM) and specific surface area (SSA) measurements. The results showed that the structurally diverse, micron-sized, spherical manganese oxide particles exhibit unusual and fascinating nanostructured surface morphologies. These were developed through the coalescence of an initially formed, nanosized, crystalline, manganese carbonate precursor phase which, during the heating, transformed into coarser, irregular, elongated, micron- sized, manganese oxide solids. It was also shown that structural transformations and morphological tailoring were followed by significant changes in the physico-chemical properties of the obtained solids. Their SSA values were drastically reduced as a result of the progressive coalescence at the particle surfaces occurring at higher temperatures. The isoelectric points (IEPs) of the obtained manganese oxides were diverse. This is the consequence of their range of crystal–chemical properties that governed the complex physico- chemical processes at the interface of the manganese oxide solid and the aqueous solution. The results of this study may lead to a conceptually new method for the synthesis of high-performance, nanostructured, manganese oxide solids with desirable structural, morphological and surface properties.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

Napomena
This work was supported by the Slovenian Research Agency (Program P2-0091) and by the Croatia Science Foundation (Grant No. 2504).



POVEZANOST RADA


Projekti:
HRZZ-IP-2013-11-2504 - Nanominerali u sedimentima i tlima: formiranje, značajke i uloga u biogeokemijskim procesima (NanoMin) (Sondi, Ivan, HRZZ - 2013-11) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb,
Rudarsko-geološko-naftni fakultet, Zagreb

Profili:

Avatar Url Vida Strasser (autor)

Avatar Url Ivan Sondi (autor)

Citiraj ovu publikaciju

Škapin, Srečo; Čadež, Vida; Suvorov, Danilo; Sondi, Ivan
Formation and properties of nanostructured colloidal manganese oxide particles obtained through the thermally controlled transformation of manganese carbonate precursor phase // Journal of colloid and interface science, 457 (2015), 35-42 doi:10.1016/j.jcis.2015.06.041 (međunarodna recenzija, članak, znanstveni)
Škapin, S., Čadež, V., Suvorov, D. & Sondi, I. (2015) Formation and properties of nanostructured colloidal manganese oxide particles obtained through the thermally controlled transformation of manganese carbonate precursor phase. Journal of colloid and interface science, 457, 35-42 doi:10.1016/j.jcis.2015.06.041.
@article{article, year = {2015}, pages = {35-42}, DOI = {10.1016/j.jcis.2015.06.041}, keywords = {Coalescence, Manganese oxides, Surface properties, Morphology, Structure}, journal = {Journal of colloid and interface science}, doi = {10.1016/j.jcis.2015.06.041}, volume = {457}, issn = {0021-9797}, title = {Formation and properties of nanostructured colloidal manganese oxide particles obtained through the thermally controlled transformation of manganese carbonate precursor phase}, keyword = {Coalescence, Manganese oxides, Surface properties, Morphology, Structure} }
@article{article, year = {2015}, pages = {35-42}, DOI = {10.1016/j.jcis.2015.06.041}, keywords = {Coalescence, Manganese oxides, Surface properties, Morphology, Structure}, journal = {Journal of colloid and interface science}, doi = {10.1016/j.jcis.2015.06.041}, volume = {457}, issn = {0021-9797}, title = {Formation and properties of nanostructured colloidal manganese oxide particles obtained through the thermally controlled transformation of manganese carbonate precursor phase}, keyword = {Coalescence, Manganese oxides, Surface properties, Morphology, Structure} }

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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