Influence of Fe(III) doping on the crystal structure and properties of hydrothermally prepared β-Ni(OH)2 nanostructures

Krehula, Stjepko; Ristić, Mira; Wu, Chuchu; Li, Xuning; Jiang, Luhua; Wang, Junhu; Sun, Gongquan; Zhang, Tao; Perović, Marija; Bošković, Marko; Antić, Bratislav; Kratofil Krehula, Ljerka; Kobzi, Balázs; Kubuki, Shiro; Musić, Svetozar

doi:10.1016/j.jallcom.2018.04.032

Pregled bibliografske jedinice broj: 934022

Influence of Fe(III) doping on the crystal structure and properties of hydrothermally prepared β-Ni(OH)2 nanostructures

Krehula, Stjepko; Ristić, Mira; Wu, Chuchu; Li, Xuning; Jiang, Luhua; Wang, Junhu; Sun, Gongquan; Zhang, Tao; Perović, Marija; Bošković, Marko et al.

Influence of Fe(III) doping on the crystal structure and properties of hydrothermally prepared β-Ni(OH)2 nanostructures // Journal of alloys and compounds, 750 (2018), 687-695 doi:10.1016/j.jallcom.2018.04.032 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 934022 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Influence of Fe(III) doping on the crystal structure and properties of hydrothermally prepared β-Ni(OH)2 nanostructures
(Influence of Fe(III) doping on the crystal structure and properties of hydrothermally prepared β-Ni(OH) 2 nanostructures)

Autori
Krehula, Stjepko ; Ristić, Mira ; Wu, Chuchu ; Li, Xuning ; Jiang, Luhua ; Wang, Junhu ; Sun, Gongquan ; Zhang, Tao ; Perović, Marija ; Bošković, Marko ; Antić, Bratislav ; Kratofil Krehula, Ljerka ; Kobzi, Balázs ; Kubuki, Shiro ; Musić, Svetozar

Izvornik
Journal of alloys and compounds (0925-8388) 750 (2018); 687-695

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

Ključne riječi
Nickel hydroxide ; β-Ni(OH)2 ; Iron doping ; Interstratification ; Mössbauer spectroscopy ; OER catalyst

Sažetak
This paper systematically examines the influence of the level of Fe(III) doping on the crystal structure and other properties of Ni(OH)2. Reference β-Ni(OH)2 and Fe-doped Ni(OH)2 samples were synthesized by hydrothermal precipitation of mixed Ni(II) and Fe(III) nitrate aqueous solutions in a highly alkaline medium. The samples were investigated using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (FE-SEM and TEM), energy dispersive X-ray spectroscopy (EDS), Mössbauer spectroscopy, magnetic measurements, Fourier transform infrared (FT- IR) spectroscopy, ultraviolet–visible–near infrared (UV–Vis–NIR) spectroscopy, thermogravimetric analysis (TGA) and electrochemical measurements. Incorporation of Fe in β-Ni(OH)2 by cation substitution was confirmed from the shifts in position of XRPD lines due to the difference in the ionic radius of Fe3+ and Ni2+. The Fe3+-for-Ni2+ substitution in β-Ni(OH)2 caused formation of an interstratified structure with β-Ni(OH)2 and α-Ni(OH)2 structural units interconnected within the same structural layers and crystallites. Mössbauer spectra revealed the presence of Fe3+ ions in highly distorted octahedral sites, presumably at the boundary between the α-Ni(OH)2 and β-Ni(OH)2 structural units within the same structural layer. Electrochemical measurements showed significant increase in oxygen evolution reaction (OER) catalytic activity of Fe-doped Ni(OH)2 compared to pure phase.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

POVEZANOST RADA

Projekti:
HRZZ-IP-2016-06-8254 - Nastajanje i svojstva 1D α-Fe2O3 nanostruktura dopiranih odabranim metalnim ionima (1D-DopedFeOX) (Krehula, Stjepko; Ristić, Mira, HRZZ ) ( CroRIS)

Ustanove:
Institut "Ruđer Bošković", Zagreb,
Fakultet kemijskog inženjerstva i tehnologije, Zagreb

Profili:

Mira Ristić (autor)