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Dependence of NiO microstructure on the electrospinning conditions


Ristić, Mira; Marciuš, Marijan; Petrović, Željka; Musić, Svetozar
Dependence of NiO microstructure on the electrospinning conditions // Ceramics international, 40 (2014), 7/Part A; 10119-10123 doi:10.1016/j.ceramint.2014.01.132 (međunarodna recenzija, članak, znanstveni)


Naslov
Dependence of NiO microstructure on the electrospinning conditions

Autori
Ristić, Mira ; Marciuš, Marijan ; Petrović, Željka ; Musić, Svetozar

Izvornik
Ceramics international (0272-8842) 40 (2014), 7/Part A; 10119-10123

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

Ključne riječi
NiO; microstructure; electrospinning; FE-SEM; XRD

Sažetak
A strong effect of the electrospinning conditions on NiO microstructure was noticed. Viscous solutions containing nickel nitrate, polyvinylpyrrolidone, ethanol, and H2O were prepared. Produced electrospun fibers were thermally treated. The chemical composition of the viscous solution, the time of electrospinning and calcination played a crucial role in the formation of corresponding nickel oxide (NiO) microstructures. At a lower nickel nitrate concentration a porous microstructure consisting of interconnected fibers was obtained, whereas at a higher nickel nitrate concentration a laminar microstructure was obtained. The formation of metallic Ni was assigned to the reducing action of polyvinylpyrrolidone during the heating of electrospun fibers. Based on EDS and XRD analyses it was suggested that metallic Ni was restricted to the surface of NiO particles. With a prolonged heating time at increased temperature metallic Ni was reoxidized to NiO.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
098-0982904-2952 - Sinteza i mikrostruktura metalnih oksida i oksidnih stakala (Mira Ristić, )

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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