Layered niobate KNb 3 O 8 synthesized by thepolymeric precursor method
Abstract The polymeric precursor method was used for the synthesis of KNb3O8 and compared to the solid-state method. The materials were characterized by X-ray diffraction (XRD), infrared spectroscopy, Raman spectroscopy, scanning electron microscopy, and determination of surface area and total pore...
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doaj-bddaf52df1ec453993d1e9c1819784df2020-11-24T22:37:29ZengAssociação Brasileira de CerâmicaCerâmica1678-45536436910410810.1590/0366-69132018643692269S0366-69132018000100104Layered niobate KNb 3 O 8 synthesized by thepolymeric precursor methodJ. K. D. de SouzaL. M. C. HonórioJ. M. FerreiraS. M. TorresI. M. G. SantosA. S. MaiaAbstract The polymeric precursor method was used for the synthesis of KNb3O8 and compared to the solid-state method. The materials were characterized by X-ray diffraction (XRD), infrared spectroscopy, Raman spectroscopy, scanning electron microscopy, and determination of surface area and total pore volume by nitrogen isotherms at 77 K. The material prepared by the polymeric precursor method was single-phase while K2Nb4O11 was obtained as secondary phase when the solid-state method was used, as evidenced by the XRD patterns and the Raman spectra. The morphology of the materials was significantly altered by the synthesis method, as the KNb3O8 prepared by the polymeric precursor method presented a more porous morphology leading to a higher surface area and pore volume.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132018000100104&lng=en&tlng=enKNb3O8polymeric precursor methodRaman spectroscopyK2Nb4O11 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
J. K. D. de Souza L. M. C. Honório J. M. Ferreira S. M. Torres I. M. G. Santos A. S. Maia |
spellingShingle |
J. K. D. de Souza L. M. C. Honório J. M. Ferreira S. M. Torres I. M. G. Santos A. S. Maia Layered niobate KNb 3 O 8 synthesized by thepolymeric precursor method Cerâmica KNb3O8 polymeric precursor method Raman spectroscopy K2Nb4O11 |
author_facet |
J. K. D. de Souza L. M. C. Honório J. M. Ferreira S. M. Torres I. M. G. Santos A. S. Maia |
author_sort |
J. K. D. de Souza |
title |
Layered niobate KNb 3 O 8 synthesized by thepolymeric precursor method |
title_short |
Layered niobate KNb 3 O 8 synthesized by thepolymeric precursor method |
title_full |
Layered niobate KNb 3 O 8 synthesized by thepolymeric precursor method |
title_fullStr |
Layered niobate KNb 3 O 8 synthesized by thepolymeric precursor method |
title_full_unstemmed |
Layered niobate KNb 3 O 8 synthesized by thepolymeric precursor method |
title_sort |
layered niobate knb 3 o 8 synthesized by thepolymeric precursor method |
publisher |
Associação Brasileira de Cerâmica |
series |
Cerâmica |
issn |
1678-4553 |
description |
Abstract The polymeric precursor method was used for the synthesis of KNb3O8 and compared to the solid-state method. The materials were characterized by X-ray diffraction (XRD), infrared spectroscopy, Raman spectroscopy, scanning electron microscopy, and determination of surface area and total pore volume by nitrogen isotherms at 77 K. The material prepared by the polymeric precursor method was single-phase while K2Nb4O11 was obtained as secondary phase when the solid-state method was used, as evidenced by the XRD patterns and the Raman spectra. The morphology of the materials was significantly altered by the synthesis method, as the KNb3O8 prepared by the polymeric precursor method presented a more porous morphology leading to a higher surface area and pore volume. |
topic |
KNb3O8 polymeric precursor method Raman spectroscopy K2Nb4O11 |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132018000100104&lng=en&tlng=en |
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