Series of compositions Bi2(M′xM1−x)4O9 (M′, M=Al, Ga, Fe; 0≤x≤1) with mullite-type crystal structure: Synthesis, characterization and 18O/16O exchange experiment

Debnath, Tapas; Rüscher, Claus H.; Fielitz, P.; Ohmann, S.; Borchardt, Günter

doi:10.1016/j.jssc.2010.07.019

Cited by 21 publications

(6 citation statements)

References 17 publications

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“…It possesses the orthorhombic crystal structure with the P b a m space group (Niizeki and Wachi, 1968;Burianek et al, 2012). It resembles the crystal structure of the bismuth based mullite type Bi 2 M 4 O 9 compounds with M = Al, Fe, Ga, well explained by Debnath et al (2010). In the structure of Bi 2 Mn 4 O 10 , each Bi atom is surrounded by eight oxygen atoms forming BiO 8 unit as "bicapped trigonal prisms" (Munõz et al, 2002).…”

Section: Introductionmentioning

confidence: 94%

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Synthesis and characterization of a solid solution series of the type Bi2MxMn4-xO10 (M = Cr3+, Co3+ and 0.0 ≤ x ≤ 2.0.)

Sarker

Rahman

Debnath

et al. 2021

J Bangladesh Acad Sci

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Bi2Mn4O10 was synthesized from corresponding metal salts in glycerin by using an organic precursor-based glycerin nitrate method. The precursor was heated at various temperatures (300 – 800 °C) for about 18 hours to determine the lowest synthesis temperature for the formation of Bi2Mn4O10. The XRD patterns of the calcined samples revealed that the desired mullite type phase started to form at 600 °C, which became more crystalline with further increase of calcination temperature. Attempts were also taken to prepare chromium and cobalt incorporated solid solution series with nominal composition Bi2MxMn4-xO10 (M = Cr3+ and Co3+) by the same procedure. The XRD data of these series exhibited mullite type single phase up to x = 0.7 and 0.1 compositions for chromium and cobalt, respectively. For further insertion of M, an extra phase appeared along with the mullite type phase. J. Bangladesh Acad. Sci. 45(1); 13-26: June 2021

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Section: Introductionmentioning

confidence: 94%

“…All the samples were prepared by an organic precursor based glycerin nitrate method (Debnath et al, 2014;Debnath et al, 2010). Bi(NO3)3.5H2O, Mn(CH3COO)2.4H2O and Glycerol were used as starting materials to prepare Bi2Mn4O10.…”

Section: Sample Preparationmentioning

confidence: 99%

Synthesis and characterization of a solid solution series of the type Bi2MxMn4-xO10 (M = Cr3+, Co3+ and 0.0 ≤ x ≤ 2.0.)

Sarker

Rahman

Debnath

et al. 2021

J Bangladesh Acad Sci

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“…Bi 2 Fe 4 O 9 is a good O 2– ionic conductor . Its crystal structure, which is displayed in Figure , has been discussed in detail in the literature. − In the orthorhombic unit cell, Bi ions are aligned along the c axis direction, and there are two coordination environments for Fe ions, edge-sharing FeO 6 octahedrons along the c axis and vertex-sharing Fe 2 O 7 tetrahedrons along a and b axes. − In this work, the CeO 2 –Bi 2 Fe 4 O 9 composite was synthesized, and its electrochemical property was evaluated. Combined in situ X-ray diffraction and absorption spectroscopy were employed to study the discharge mechanism.…”

Section: Introductionmentioning

confidence: 97%

Oxygen Reduction Contributing to Charge Transfer during the First Discharge of the CeO₂–Bi₂Fe₄O₉–Li Battery: In Situ X-ray Diffraction and X-ray Absorption Near-Edge Structure Investigation

Liu

Lin²,

et al. 2014

J. Phys. Chem. C

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Since pioneering work performed by Rouxel et al. that emphasizes the effects of anions in the ionic intercalation process, the role of oxygen ions in lithium ionic battery electrodes is of great interest since it will give new directions to further enhance the battery capacity. In this paper, Bi2Fe4O9–CeO2 was synthesized and was used as an anode for second lithium batteries application. A large amount of oxygen vacancies exist in both CeO2 and Bi2Fe4O9. In CeO2, oxygen vacancies are mainly located at the 111 plane, and in Bi2Fe4O9, oxygen vacancies are mainly located at the 002 plane. Li+ insertion into Bi2Fe4O9 produced high spin tetrahedral Fe2+, which is Jahn–Teller active and induces shrinkage of the Bi2Fe4O9 lattice and releases O2. The released O2 is further reduced and contributes to ∼70 mAh/g during the first discharge process. The 002 plane of Bi2Fe4O9 is very reactive for oxygen reduction, where there are not only a lot of oxygen vacancies but also tetrahedral Fe3+ ions participating in producing more oxygen vacancies. This work gives new directions for future design of lithium battery electrodes, which can reversibly evolve/reduce O2, and the O2/O2– (or O–) redox couple is responsible for charge transfer.

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“…Mullite‐type compounds have received long wide research attention due to their diverse crystal‐chemical, 1,2,3 thermal, 4,5,6,7 mechanical, 8,9,10 electrical, 11,12,13 and optical 14,15,16 properties. A general and convenient way to describe the mullite‐type composition is based on the relative number of oxygen atoms in the chemical formula (normalized to even number).…”

Section: Introductionmentioning

confidence: 99%

Mullite‐type EMBO₄: synthesis, structural, optical, and vibrational properties of rare tin(II) borates with M = Al and Ga

Wittmann,

Murshed,

Bilovol

et al. 2023

J Am Ceram Soc.

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Metal tin‐(II)‐borates are rarely studied mainly due to the susceptibility of either oxidation into tin(IV) or disproportionation into elemental tin(0) and tin(IV). We report mullite‐type SnAlBO4 and SnGaBO4 ceramics produced by conventional solid‐state synthesis in sealed quartz tubes at low pressure of 10–7 MPa. Both compounds are isostructural to PbAlBO4 as confirmed by Rietveld refinements of powder X‐ray data. The crystal structures are highly influenced by the stereochemical activity of the 5s2 lone electron pair of the Sn2+ cation measured by the Wang–Liebau eccentricity parameter. To further consolidate the structural features 119Sn Mössbauer, solid state NMR, Raman, IR and UV/vis spectroscopic measurements are performed. The 119Sn Mössbauer isomer shifts and the quadrupole splitting values confirm the SnO4 coordination and Sn(II) valence states. Solid state 11B, 27Al and 119Sn NMR spectra provided insights into the local crystal‐chemical environment. The vibrational properties are discussed from group theoretical analysis to mode assignments. SnAlBO4 and SnGaBO4, respectively, possess an electronic band gap of 3.73(9) and 3.21(4) eV calculated from the diffuse reflectance UV/Vis spectra.

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Series of compositions Bi2(M′xM1−x)4O9 (M′, M=Al, Ga, Fe; 0≤x≤1) with mullite-type crystal structure: Synthesis, characterization and 18O/16O exchange experiment

Cited by 21 publications

References 17 publications

Synthesis and characterization of a solid solution series of the type Bi<sub>2</sub>M<sub>x</sub>Mn<sub>4-x</sub>O<sub>10</sub> (M = Cr<sup>3+</sup>, Co<sup>3+</sup> and 0.0 ≤ x ≤ 2.0.)

Synthesis and characterization of a solid solution series of the type Bi<sub>2</sub>M<sub>x</sub>Mn<sub>4-x</sub>O<sub>10</sub> (M = Cr<sup>3+</sup>, Co<sup>3+</sup> and 0.0 ≤ x ≤ 2.0.)

Oxygen Reduction Contributing to Charge Transfer during the First Discharge of the CeO₂–Bi₂Fe₄O₉–Li Battery: In Situ X-ray Diffraction and X-ray Absorption Near-Edge Structure Investigation

Mullite‐type EMBO₄: synthesis, structural, optical, and vibrational properties of rare tin(II) borates with M = Al and Ga

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Series of compositions Bi2(M′xM1−x)4O9 (M′, M=Al, Ga, Fe; 0≤x≤1) with mullite-type crystal structure: Synthesis, characterization and 18O/16O exchange experiment

Cited by 21 publications

References 17 publications

Synthesis and characterization of a solid solution series of the type Bi<sub>2</sub>M<sub>x</sub>Mn<sub>4-x</sub>O<sub>10</sub> (M = Cr<sup>3+</sup>, Co<sup>3+</sup> and 0.0 ≤ x ≤ 2.0.)

Synthesis and characterization of a solid solution series of the type Bi<sub>2</sub>M<sub>x</sub>Mn<sub>4-x</sub>O<sub>10</sub> (M = Cr<sup>3+</sup>, Co<sup>3+</sup> and 0.0 ≤ x ≤ 2.0.)

Oxygen Reduction Contributing to Charge Transfer during the First Discharge of the CeO2–Bi2Fe4O9–Li Battery: In Situ X-ray Diffraction and X-ray Absorption Near-Edge Structure Investigation

Mullite‐type EMBO4: synthesis, structural, optical, and vibrational properties of rare tin(II) borates with M = Al and Ga

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Oxygen Reduction Contributing to Charge Transfer during the First Discharge of the CeO₂–Bi₂Fe₄O₉–Li Battery: In Situ X-ray Diffraction and X-ray Absorption Near-Edge Structure Investigation

Mullite‐type EMBO₄: synthesis, structural, optical, and vibrational properties of rare tin(II) borates with M = Al and Ga