A new anhydrous bismuth potassium nitrate, K 3Bi 2(NO 3) 9: Synthesis, structure characterization and thermal decomposition

A. Goaz; V. Uvarov; I. Popov; S. Shenawi-Khalil; Y. Sasson

doi:10.1016/j.jallcom.2011.10.066

A new anhydrous bismuth potassium nitrate, K ₃Bi ₂(NO ₃) ₉: Synthesis, structure characterization and thermal decomposition

A. Goaz
, V. Uvarov^*
, I. Popov
, S. Shenawi-Khalil
, Y. Sasson

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

A new K ₃Bi ₂(NO ₃) ₉ phase was discovered at a synthesis of Bi-containing photocatalysts. K ₃Bi ₂(NO ₃) ₉ has cubic structure with unit cell parameter a = 13.5354(20) , and belongs to P4 ₃32 (No. 212) space group. New phase is isostructural with the K ₃Ln ₂(NO ₃) ₉ (Ln = La, Ce, Pr, Nd, and Sm) phases. The crystal structure was refined from powder X-ray diffraction (XRD) data. The R _wp factor at Rietveld refinement was equal to 8.62%. The morphology of K ₃Bi ₂(NO ₃) ₉ was characterized using scanning electron microscopy. The value of ionic radius of Bi ³⁺ in 12-fold coordination calculated from the unit cell parameter was found to be 1.314(5). K ₃Bi ₂(NO ₃) ₉ phase and products of its thermal decomposition were studied using XRD, Fourier transform infrared spectroscopy (FTIR) methods and thermal gravimetric analysis (TGA). At 350 °C, K ₃Bi ₂(NO ₃) ₉ phase was transformed to new unknown intermediate bismuth potassium nitrate that most likely belongs to Sillen type of structure. Geometrical solution for unit cell of this phase was proposed.

Original language	English
Pages (from-to)	30-34
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	514
DOIs	https://doi.org/10.1016/j.jallcom.2011.10.066
State	Published - 15 Feb 2012

Keywords

Anhydrous double nitrates
Bismuth nitrates
Ionic radius
Rietveld refinement
Thermal decomposition

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10.1016/j.jallcom.2011.10.066

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title = "A new anhydrous bismuth potassium nitrate, K 3Bi 2(NO 3) 9: Synthesis, structure characterization and thermal decomposition",

abstract = "A new K 3Bi 2(NO 3) 9 phase was discovered at a synthesis of Bi-containing photocatalysts. K 3Bi 2(NO 3) 9 has cubic structure with unit cell parameter a = 13.5354(20) , and belongs to P4 332 (No. 212) space group. New phase is isostructural with the K 3Ln 2(NO 3) 9 (Ln = La, Ce, Pr, Nd, and Sm) phases. The crystal structure was refined from powder X-ray diffraction (XRD) data. The R wp factor at Rietveld refinement was equal to 8.62\%. The morphology of K 3Bi 2(NO 3) 9 was characterized using scanning electron microscopy. The value of ionic radius of Bi 3+ in 12-fold coordination calculated from the unit cell parameter was found to be 1.314(5). K 3Bi 2(NO 3) 9 phase and products of its thermal decomposition were studied using XRD, Fourier transform infrared spectroscopy (FTIR) methods and thermal gravimetric analysis (TGA). At 350 °C, K 3Bi 2(NO 3) 9 phase was transformed to new unknown intermediate bismuth potassium nitrate that most likely belongs to Sillen type of structure. Geometrical solution for unit cell of this phase was proposed.",

keywords = "Anhydrous double nitrates, Bismuth nitrates, Ionic radius, Rietveld refinement, Thermal decomposition",

author = "A. Goaz and V. Uvarov and I. Popov and S. Shenawi-Khalil and Y. Sasson",

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doi = "10.1016/j.jallcom.2011.10.066",

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TY - JOUR

T1 - A new anhydrous bismuth potassium nitrate, K 3Bi 2(NO 3) 9

T2 - Synthesis, structure characterization and thermal decomposition

AU - Goaz, A.

AU - Uvarov, V.

AU - Popov, I.

AU - Shenawi-Khalil, S.

AU - Sasson, Y.

PY - 2012/2/15

Y1 - 2012/2/15

N2 - A new K 3Bi 2(NO 3) 9 phase was discovered at a synthesis of Bi-containing photocatalysts. K 3Bi 2(NO 3) 9 has cubic structure with unit cell parameter a = 13.5354(20) , and belongs to P4 332 (No. 212) space group. New phase is isostructural with the K 3Ln 2(NO 3) 9 (Ln = La, Ce, Pr, Nd, and Sm) phases. The crystal structure was refined from powder X-ray diffraction (XRD) data. The R wp factor at Rietveld refinement was equal to 8.62%. The morphology of K 3Bi 2(NO 3) 9 was characterized using scanning electron microscopy. The value of ionic radius of Bi 3+ in 12-fold coordination calculated from the unit cell parameter was found to be 1.314(5). K 3Bi 2(NO 3) 9 phase and products of its thermal decomposition were studied using XRD, Fourier transform infrared spectroscopy (FTIR) methods and thermal gravimetric analysis (TGA). At 350 °C, K 3Bi 2(NO 3) 9 phase was transformed to new unknown intermediate bismuth potassium nitrate that most likely belongs to Sillen type of structure. Geometrical solution for unit cell of this phase was proposed.

AB - A new K 3Bi 2(NO 3) 9 phase was discovered at a synthesis of Bi-containing photocatalysts. K 3Bi 2(NO 3) 9 has cubic structure with unit cell parameter a = 13.5354(20) , and belongs to P4 332 (No. 212) space group. New phase is isostructural with the K 3Ln 2(NO 3) 9 (Ln = La, Ce, Pr, Nd, and Sm) phases. The crystal structure was refined from powder X-ray diffraction (XRD) data. The R wp factor at Rietveld refinement was equal to 8.62%. The morphology of K 3Bi 2(NO 3) 9 was characterized using scanning electron microscopy. The value of ionic radius of Bi 3+ in 12-fold coordination calculated from the unit cell parameter was found to be 1.314(5). K 3Bi 2(NO 3) 9 phase and products of its thermal decomposition were studied using XRD, Fourier transform infrared spectroscopy (FTIR) methods and thermal gravimetric analysis (TGA). At 350 °C, K 3Bi 2(NO 3) 9 phase was transformed to new unknown intermediate bismuth potassium nitrate that most likely belongs to Sillen type of structure. Geometrical solution for unit cell of this phase was proposed.

KW - Anhydrous double nitrates

KW - Bismuth nitrates

KW - Ionic radius

KW - Rietveld refinement

KW - Thermal decomposition

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JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

A new anhydrous bismuth potassium nitrate, K ₃Bi ₂(NO ₃) ₉: Synthesis, structure characterization and thermal decomposition

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Keywords

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