PtW
PtW is a metallic platinum-tungsten alloy studied primarily for its structural complexity and potential applications in catalytic materials science.
About PtW
PtW is a metallic alloy composed of platinum and tungsten. As a member of the platinum-group alloy catalyst class, it represents a complex system that has been extensively documented across numerous structural databases, reflecting significant interest in its atomic arrangement and potential catalytic behavior.
Despite its broad structural documentation, the compound is characterized by its position above the thermodynamic hull, suggesting it is a metastable phase. Its metallic nature and elemental composition make it a subject of ongoing investigation for researchers seeking to tune the electronic properties of platinum-based catalysts.
Key Properties
Cross-validated computational properties for PtW, aggregated across 5 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for PtW, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| R-3m (No. 166) | trigonal | 0.00 | 0.2072 | -51.483 | 19.91 |
| Cm (No. 8) | Monoclinic | — | — | — | 22.04 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 18.94 |
| — | — | — | — | — | 20.05 |
| Cm (No. 8) | Monoclinic | — | — | — | 18.69 |
| Cm (No. 8) | Monoclinic | — | — | — | 22.95 |
| Cm (No. 8) | Monoclinic | — | — | — | 21.10 |
| C2 (No. 5) | Monoclinic | — | — | — | 14.90 |
| C2 (No. 5) | Monoclinic | — | — | — | 21.94 |
| C2 (No. 5) | Monoclinic | — | — | — | 19.22 |
| C2/m (No. 12) | Monoclinic | — | — | — | 21.36 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 16.07 |
Applications
Where PtW is used.
Frequently Asked Questions
Common questions about PtW, answered from cross-validated data.
What is PtW?
PtW is a metallic platinum-tungsten alloy studied primarily for its structural complexity and potential applications in catalytic materials science.
What is PtW used for?
What is the band gap of PtW?
Is PtW a metal, semiconductor, or insulator?
Is PtW thermodynamically stable?
What is the crystal structure of PtW?
What is the density of PtW?
How many polymorphs of PtW are known?
What elements does PtW contain?
Where does the data for PtW come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse family of platinum-group alloys, PtW occupies a distinct niche compared to more stable intermetallics like LaRh or BaPd. While many of its siblings exhibit greater thermodynamic stability, the structural diversity observed in PtW highlights the complex interplay between platinum and transition metals, positioning it as a unique case study in metastable alloy formation.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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