Tellurium Minerals: Structural and Chemical Diversity and Complexity

Krivovichev, V. G.; Krivovichev, Sergey V.; Charykova, M. V.

doi:10.3390/min10070623

Cited by 5 publications

(4 citation statements)

References 58 publications

(94 reference statements)

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“…The higher complexity of O-bearing minerals agrees well with the fact that a large number of them have a secondary origin and form at the expense of primary O-free minerals (e.g. during oxidation of sulfide mineral deposits; Krivovichev et al, 2019bKrivovichev et al, , 2020b. The difference in complexity between anoxic and O-bearing minerals also plays a crucial role in the complexity changes during mineral evolution, i.e.…”

Section: Average Complexity For Mineral Classessupporting

confidence: 71%

Structural and chemical complexity of minerals: an update

Krivovichev

Hazen

et al. 2022

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The complexities of chemical composition and crystal structure are fundamental characteristics of minerals that have high relevance to the understanding of their stability, occurrence and evolution. This review summarises recent developments in the field of mineral complexity and outlines possible directions for its future elaboration. The database of structural and chemical complexity parameters of minerals is updated by H-correction of structures with unknown H positions and the inclusion of new data. The revised average complexity values (arithmetic means) for all minerals are 3.54(2) bits/atom and 345(10) bits/cell (based upon 4443 structure reports). The distributions of atomic information amounts, chemIG and strIG, versus the number of mineral species fit the normal modes, whereas the distributions of total complexities, chemIG,total and strIG,total, along with numbers of atoms per formula and per unit cell are log normal. The three most complex mineral species known today are ewingite, morrisonite and ilmajokite, all either discovered or structurally characterised within the last five years. The most important complexity-generating mechanisms in minerals are: (1) the presence of isolated large clusters; (2) the presence of large clusters linked together to form three-dimensional frameworks; (3) formation of complex three-dimensional modular frameworks; (4) formation of complex modular layers; (5) high hydration state in salts with complex heteropolyhedral units; and (6) formation of ordered superstructures of relatively simple structure types. The relations between symmetry and complexity are considered. The analysis of temporal dynamics of mineralogical discoveries since 1875 with the step of 25 years show the increasing chemical and structural complexities of human knowledge of the mineral kingdom in the history of mineralogy. In the Earth's history, both diversity and complexity of minerals experience dramatic increases associated with the formation of Earth's continental crust, initiation of plate tectonics and the Great Oxidation event.

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Section: Average Complexity For Mineral Classessupporting

confidence: 71%

Structural and chemical complexity of minerals: an update

Krivovichev

Hazen

et al. 2022

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“… 14 − 16 Especially, the transition-metal dichalcogenides (TMDs) PtX 2 (X = S, Se, Te), which crystallize in the same structure as the naturally occurring mineral “moncheite” hosts pronounced chemical/structural flexibility. 17 , 18 …”

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“…Among Pt alloys, Pt-based layered materials deserve particular attention , for catalysis. As a matter of fact, being van der Waals materials, they can be thinned down to atomic thickness by liquid-phase exfoliation, with the possibility to achieve nanosheets with high surface area and superior catalytic activity. − Especially, the transition-metal dichalcogenides (TMDs) PtX 2 (X = S, Se, Te), which crystallize in the same structure as the naturally occurring mineral “moncheite” hosts pronounced chemical/structural flexibility. , …”

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confidence: 99%

“…14−16 Especially, the transition-metal dichalcogenides (TMDs) PtX 2 (X = S, Se, Te), which crystallize in the same structure as the naturally occurring mineral "moncheite" hosts pronounced chemical/ structural flexibility. 17,18 Among Pt-based layered materials, PtTe 2 has been found to be the most performing electrode material for HER, with an overpotential of 0.54 V and a Tafel slope of 110 mV•dec −1 13 . Notably, PtTe 2 becomes successfully activated for HER upon oxidative treatment.…”

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Unveiling the Mechanisms Ruling the Efficient Hydrogen Evolution Reaction with Mitrofanovite Pt₃Te₄

Boukhvalov

Cheng

Edla

et al. 2021

J. Phys. Chem. Lett.

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By means of electrocatalytic tests, surface-science techniques and density functional theory, we unveil the physicochemical mechanisms ruling the electrocatalytic activity of recently discovered mitrofanovite (Pt 3 Te 4 ) mineral. Mitrofanovite represents a very promising electrocatalyst candidate for energy-related applications, with a reduction of costs by 47% compared to pure Pt and superior robustness to CO poisoning. We show that Pt 3 Te 4 is a weak topological metal with the invariant, exhibiting electrical conductivity (∼4 × 10 6 S/m) comparable with pure Pt. In hydrogen evolution reaction (HER), the electrode based on bulk Pt 3 Te 4 shows a very small overpotential of 46 mV at 10 mA cm –2 and a Tafel slope of 36–49 mV dec –1 associated with the Volmer–Heyrovsky mechanism. The outstanding ambient stability of Pt 3 Te 4 also provides durability of the electrode and long-term stability of its efficient catalytic performances.

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Tellurium Minerals: Structural and Chemical Diversity and Complexity

Cited by 5 publications

References 58 publications

Structural and chemical complexity of minerals: an update

Structural and chemical complexity of minerals: an update

Unveiling the Mechanisms Ruling the Efficient Hydrogen Evolution Reaction with Mitrofanovite Pt₃Te₄

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Tellurium Minerals: Structural and Chemical Diversity and Complexity

Cited by 5 publications

References 58 publications

Structural and chemical complexity of minerals: an update

Structural and chemical complexity of minerals: an update

Unveiling the Mechanisms Ruling the Efficient Hydrogen Evolution Reaction with Mitrofanovite Pt3Te4

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Unveiling the Mechanisms Ruling the Efficient Hydrogen Evolution Reaction with Mitrofanovite Pt₃Te₄