TY - JOUR
T1 - Perovskite-type (Ba0.15Sr0.85)(B0.15Co0.85)O3 − Δ (B = Ti, Nb) oxides
T2 - structural stability, oxygen nonstoichiometry, and oxygen sorption/desorption properties
AU - Lin, Hongquan
AU - Lu, Hui
AU - Cao, Shuyun
AU - Gui, Jianzhou
AU - Liu, Dan
AU - Park, Jung Hoon
N1 - Publisher Copyright:
© 2016, Springer-Verlag Berlin Heidelberg.
PY - 2017/3/1
Y1 - 2017/3/1
N2 - The perovskite-type Ba- and Ti/Nb-doped (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) oxides were synthesized successfully by the solid-state reaction method. Crystal structure, elemental compositions, and oxygen nonstoichiometry of the as-synthesized (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) oxides were investigated by X-ray diffraction (XRD), scanning electron microscopy-energy dispersive spectrometry (SEM-EDS), inductively coupled plasma (ICP)-atomic emission spectrometry, thermogravimetry (TG), and iodometric titration. XRD results demonstrate that the as-obtained (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) oxides possess purely cubic perovskite-type structures. The temperature-swing oxygen sorption/desorption properties of the as-synthesized (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) perovskite-type oxides were studied by the dynamic TG. Results show that the structural stability of the co-doped (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) oxides is improved greatly, and the high oxygen sorption capacity for the perovskite-type (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) oxides is also obtained between 300 and 950 °C in air.
AB - The perovskite-type Ba- and Ti/Nb-doped (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) oxides were synthesized successfully by the solid-state reaction method. Crystal structure, elemental compositions, and oxygen nonstoichiometry of the as-synthesized (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) oxides were investigated by X-ray diffraction (XRD), scanning electron microscopy-energy dispersive spectrometry (SEM-EDS), inductively coupled plasma (ICP)-atomic emission spectrometry, thermogravimetry (TG), and iodometric titration. XRD results demonstrate that the as-obtained (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) oxides possess purely cubic perovskite-type structures. The temperature-swing oxygen sorption/desorption properties of the as-synthesized (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) perovskite-type oxides were studied by the dynamic TG. Results show that the structural stability of the co-doped (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) oxides is improved greatly, and the high oxygen sorption capacity for the perovskite-type (Ba0.15Sr0.85)(B0.15Co0.85)O3 − δ (B = Ti, Nb) oxides is also obtained between 300 and 950 °C in air.
KW - Crystal structure
KW - Oxygen sorption/desorption
KW - Perovskite oxides
KW - Solid-state reaction
KW - Structural stability
UR - http://www.scopus.com/inward/record.url?scp=84988706154&partnerID=8YFLogxK
U2 - 10.1007/s11581-016-1835-6
DO - 10.1007/s11581-016-1835-6
M3 - Article
AN - SCOPUS:84988706154
SN - 0947-7047
VL - 23
SP - 717
EP - 724
JO - Ionics
JF - Ionics
IS - 3
ER -