Chemical route to the synthesis of superconducting bismuth oxide system

Marta, Liana; Zaharescu, Maria; Ciontea, L.; Petrișor, T.

doi:10.1016/0964-1807(93)90279-b

Cited by 9 publications

(2 citation statements)

References 19 publications

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“…Recently, strontium acetate and oxalate have been used for this purpose in different chemical-processing methods (Lee, Doi & Yuasa, 1994;Alconchel, Ulla & Lombardo, 1994;Marta, Zaharescu, Ciontea & Petrisor, 1993). There are few crystallographic studies of strontium(II) carboxylates and among those reported have been strontium(H) acetates (Trunov, Chubinidze, Efremov & Velikodnyi, 1984;Trunov, Endeladze & Efremov, 1988;Groombridge, Harris, Packer, Hursthouse & Walker, 1985) and strontium(II) oxalate (Sterling, 1965).…”

Section: Commentmentioning

confidence: 99%

Triaqua(oxydiacetato-O,O',O'')strontium(II) Monohydrate

Baggio¹,

Perec²,

Garland³

1996

Acta Crystallogr C

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Section: Commentmentioning

confidence: 99%

Triaqua(oxydiacetato-O,O',O'')strontium(II) Monohydrate

Baggio¹,

Perec²,

Garland³

1996

Acta Crystallogr C

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“…Numerous studies focused on the synthesis and the thermal decomposition of bismuth oxalates in the last decades. The thermolysis in air of Bi-containing mixed oxalates proved to be a promising chemical route for the preparation of high- T c superconducting oxides − and ferroelectric materials. , Bismuth carboxylates have been used as precursors for the formation of bismuth–molybdate catalysts. , Various bismuth oxalate precursors were also studied for the synthesis of bismuth oxide with controlled morphology for photocatalytic , and electrochemical applications . Several bismuth oxalate crystal structures have been described.…”

Section: Introductionmentioning

confidence: 99%

Bi₂(C₂O₄)₃·7H₂O and Bi(C₂O₄)OH Oxalates Thermal Decomposition Revisited. Formation of Nanoparticles with a Lower Melting Point than Bulk Bismuth

et al. 2017

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Two bismuth oxalates, namely, Bi(CO)·7HO and Bi(CO)OH, were studied in terms of synthesis, structural characterization, particle morphology, and thermal behavior under several atmospheres. The oxalate powders were produced by chemical precipitation from bismuth nitrate and oxalic acid solutions under controlled pH, then characterized by X-ray diffraction (XRD), temperature-dependent XRD, IR spectroscopy, scanning electron microscopy, and thermogravimetric differential thermal analyses. New results on the thermal decomposition of bismuth oxalates under inert or reducing atmospheres are provided. On heating in nitrogen, both studied compounds decompose into small bismuth particles. Thermal properties of the metallic products were investigated. The Bi(CO)OH decomposition leads to a Bi-BiO metal-oxide composite product in which bismuth is confined in a nanometric size, due to surface oxidation. The melting point of such bismuth particles is strongly related to their crystallite size. The nanometric bismuth melting has thus been evidenced ∼40 °C lower than for bulk bismuth. These results should contribute to the development of the oxalate precursor route for low-temperature soldering applications.

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