Journal
CCS CHEMISTRY
Volume 4, Issue 10, Pages -Publisher
CHINESE CHEMICAL SOC
DOI: 10.31635/ccschem.021.202101598
Keywords
amorphous; heterophase; hollow structure; hydrogen evolution reaction
Categories
Funding
- National Natural Science Foundation of China [21971117]
- Functional Research Funds for the Central Universities, Nankai University [63186005]
- Tianjin Key Lab for Rare Earth Materials and Applications [ZB19500202]
- Open Funds of the State Key Laboratory of Rare Earth Resource Utilization [RERU2019001]
- 111 Project from China [B18030]
- Beijing-Tianjin-Hebei Collaborative Innovation Project [19YFSLQY00030]
- Outstanding Youth Project of TianjinNatural Science Foundation [20JCJQJC00130]
- Key Project of Tianjin Natural Science Foundation [20JCZDJC00650]
- Basic Scientific Research in Central Universities [G2020KY0535]
- Foundation of Shaanxi Province Natural Science Basic Research Program [2021JQ-095, 2020JQ-146]
- Postdoctoral Science Foundation of China [2019TQ0265, 2019M663809]
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Here, we report the preparation of 2D crystalline/amorphous heterophase MoS2 nanosheets with the same elemental components via a solvothermal method. The nanosheets can self-assemble into hollow structures and serve as templates to grow Pt nanoparticles, forming MoS2-Pt nanocomposites. These materials exhibit excellent electrochemical performance in hydrogen production.
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 samechemical 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. [GRAPHICS] .
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