Research output: Contribution to journal › Article › peer-review
New gold chalcogenides in the Au–Te–Se–S system. / Palyanova, Galina; Mikhlin, Yuri; Zinina, Veronika et al.
In: Journal of Physics and Chemistry of Solids, Vol. 138, 109276, 03.2020.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - New gold chalcogenides in the Au–Te–Se–S system
AU - Palyanova, Galina
AU - Mikhlin, Yuri
AU - Zinina, Veronika
AU - Kokh, Konstantin
AU - Seryotkin, Yurii
AU - Zhuravkova, Tatyana
PY - 2020/3
Y1 - 2020/3
N2 - The pyrosynthesis of gold chalcogenides AuX (AuTe0.7Se0.2S0.1), AuX2 (AuTe1.8Se0.2–AuTe1.8Se0.1S0.1) and Au3X10 (Au3Te6Se3S–Au3Te6Se2.5S1.5) was performed from a mixture of elemental substances taken in the atomic ratios X/Au (X = Σ(Te + Se + S)) of AuTe0.666Se0.167S0.167 (X/Au = 1), AuTeSe0.5S0.5 (X/Au = 2), AuTe2Se1.125S0.375, AuTe2Se0.75S0.75 (X/Au = 3.5) and AuTe2.5SeS0.5 (X/Au = 4). Optical and scanning electron microscopy, electron microprobe analysis, X-ray powder diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy were applied to characterize the samples. It was established that Au chalcogenides of composition AuX2 were analogous to mineral calaverite (AuTe2), Au3X10 phases were close to S-bearing mineral maletoyvayamite and the AuX substance seemed to be a synthetic analog of a phase Au0.99–1.00Te0.70–0.71Se0.25–0.27S0.03–0.06 found in the Gaching area of the Maletoivayam ore field (Central Kamchatka volcanic belt). The results on complex Au chalcogenides in the quaternary Au–Te–Se–S system are of interest for chemistry, mineralogy and geochemistry of Au, and potential applications in materials science.
AB - The pyrosynthesis of gold chalcogenides AuX (AuTe0.7Se0.2S0.1), AuX2 (AuTe1.8Se0.2–AuTe1.8Se0.1S0.1) and Au3X10 (Au3Te6Se3S–Au3Te6Se2.5S1.5) was performed from a mixture of elemental substances taken in the atomic ratios X/Au (X = Σ(Te + Se + S)) of AuTe0.666Se0.167S0.167 (X/Au = 1), AuTeSe0.5S0.5 (X/Au = 2), AuTe2Se1.125S0.375, AuTe2Se0.75S0.75 (X/Au = 3.5) and AuTe2.5SeS0.5 (X/Au = 4). Optical and scanning electron microscopy, electron microprobe analysis, X-ray powder diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy were applied to characterize the samples. It was established that Au chalcogenides of composition AuX2 were analogous to mineral calaverite (AuTe2), Au3X10 phases were close to S-bearing mineral maletoyvayamite and the AuX substance seemed to be a synthetic analog of a phase Au0.99–1.00Te0.70–0.71Se0.25–0.27S0.03–0.06 found in the Gaching area of the Maletoivayam ore field (Central Kamchatka volcanic belt). The results on complex Au chalcogenides in the quaternary Au–Te–Se–S system are of interest for chemistry, mineralogy and geochemistry of Au, and potential applications in materials science.
KW - Gold chalcogenides
KW - Pyrosynthesis
KW - Raman spectroscopy
KW - SEM
KW - X-ray diffraction
KW - X-ray photoelectron spectroscopy
KW - STABILITY
KW - DEPOSIT
KW - CALAVERITE
KW - REDUCTION
KW - ROBB-MONTBRAY
KW - QUEBEC
KW - XPS
KW - MINERALOGY
KW - VALENCE
KW - TELLURIDE
UR - http://www.scopus.com/inward/record.url?scp=85075879822&partnerID=8YFLogxK
U2 - 10.1016/j.jpcs.2019.109276
DO - 10.1016/j.jpcs.2019.109276
M3 - Article
AN - SCOPUS:85075879822
VL - 138
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
SN - 0022-3697
M1 - 109276
ER -
ID: 22578426