Abstract
Heterophase nanomaterials composed of multiple phases have attracted increasing attention due to their enhanced performance in electrocatalytic field. Nevertheless, constructing two-dimensional (2D) crystalline/amorphous heterophase nanostructures with the same chemical composition remains a great challenge. Herein, we report the preparation of a 2D crystalline/amorphous heterophase of MoS2 nanosheets with the same elemental components via a facile solvothermal method. The obtained MoS2 heterophase nanosheets can self-assemble into hollow structures with high morphological yield, referred to as c/a-hollow MoS2. Furthermore, the as-prepared c/a-hollow MoS2 can serve as templates to grow uniform Pt nanoparticles with a low mass loading of 5%, forming c/a-hollow MoS2-Pt nanocomposites. Impressively, when used as electrocatalysts, c/a-hollow MoS2 and c/a-hollow MoS2-Pt nanocomposites exhibit excellent electrochemical performance toward hydrogen production with low onset potentials of −112 and −26 mV and Tafel slopes as small as 45 and 34 mV/dec, respectively, which are among the best reported hydrogen evolution reaction electrocatalysts.
Original language | English |
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Pages (from-to) | 3391-3401 |
Number of pages | 11 |
Journal | CCS Chemistry |
Volume | 4 |
Issue number | 10 |
DOIs | |
State | Published - 3 Oct 2022 |
Keywords
- amorphous
- heterophase
- hollow structure
- hydrogen evolution reaction