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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 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↗