Search NASA⌕ Search

SEARCH · Search NASA

Results for “ZnS2”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on ZnS2 by Materials Project

ZnS2 is Pyrite-like structured and crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Zn2+ is bonded to six equivalent S1- atoms to form ZnS6 octahedra that share corners with twelve equivalent ZnS6 octahedra and corners with six equivalent SZn3S tetrahedra. The corner-sharing octahedral tilt angles are 67°. All Zn–S bond lengths are 2.55 Å. S1- is bonded to three equivalent Zn2+ and one S1- atom to form distorted SZn3S tetrahedra that share corners with three equivalent ZnS6 octahedra and corners with fifteen equivalent SZn3S tetrahedra. The corner-sharing octahedral tilt angles are 74°. The S–S bond length is 2.08 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Al2(ZnS2)3 by Materials Project

Al2(ZnS2)3 crystallizes in the trigonal R3 space group. The structure is three-dimensional. Zn2+ is bonded to four S2- atoms to form ZnS4 tetrahedra that share corners with four AlS4 tetrahedra and corners with six equivalent ZnS4 tetrahedra. There are a spread of Zn–S bond distances ranging from 2.28–2.41 Å. There are two inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to four S2- atoms to form AlS4 tetrahedra that share corners with three equivalent AlS4 tetrahedra and corners with six equivalent ZnS4 tetrahedra. There are three shorter (2.28 Å) and one longer (2.31 Å) Al–S bond lengths. In the second Al3+ site, Al3+ is bonded to four S2- atoms to form AlS4 tetrahedra that share corners with three equivalent AlS4 tetrahedra and corners with six equivalent ZnS4 tetrahedra. There are three shorter (2.28 Å) and one longer (2.31 Å) Al–S bond lengths. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a trigonal non-coplanar geometry to one Zn2+ and two Al3+ atoms. In the second S2- site, S2- is bonded to three equivalent Zn2+ and one Al3+ atom to form corner-sharing SAlZn3 tetrahedra. In the third S2- site, S2- is bonded in a trigonal non-coplanar geometry to three equivalent Zn2+ atoms. In the fourth S2- site, S2- is bonded to three equivalent Zn2+ and one Al3+ atom to form corner-sharing SAlZn3 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2022

Metal-Confined Synthesis of ZnS 2 Monolayer Catalysts for Dinitrogen Electroreduction

Atomically thin two-dimensional (2D) materials are of great significance in catalytic, energy storage, and electronic devices. So far, such materials are limited to several categories with layered structures. Herein, we predict an unusual atomically thin ZnS2 monolayer and exploit a metal-confined chemical vapor deposition strategy for the successful preparation of such an unprecedented 2D material, where a sulfide monolayer was first grown on metal nanosheets to form a sulfide/metal/sulfide sandwich structure, and then, the metal core was etched out to obtain freestanding sulfide monolayers. As shown in this work, the ZnS 2 monolayer possesses unique electron-deficient properties related to the atomic structure and exhibits high catalytic activity for dinitrogen electroreduction. Our work will enable creating 2D TMD materials that were previously inexistent or inaccessible.

2D Materials↗