Dislocation-strained MoS2 nanosheets for high efficiency hydrogen evolution reaction

Defect engineering is one of the effective strategies to optimize the physical and chemical properties of molybdenum disulfide (MoS2) to improve catalytic hydrogen evolution reaction (HER) performance. Dislocations, as a typical defect structure, are worthy of further investigation due to the versatility and sophistication of structures and the influence of local strain effects on the catalytic performance. Herein, this study adopted a low-temperature hydrothermal synthesis strategy to introduce numerous dislocation-strained structures into the in-plane and out-of-plane of MoS2 nanosheets. Superior HER catalytic activity of 5.85 mmol.g(-1).h(-1) under visible light was achieved based on the high-density dislocations and the corresponding strain field. This work paves a new pathway for improving the catalytic activity of MoS2 via a dislocation-strained synergistic modulation strategy.

Automated summary

Defect engineering is an effective strategy to optimize the catalytic performance of MoS2 by introducing dislocations. This study successfully synthesized numerous dislocation-strained structures in MoS2 nanosheets through low-temperature hydrothermal synthesis. The high-density dislocations and corresponding strain field resulted in superior catalytic activity under visible light. This work provides a new pathway for improving the catalytic activity of MoS2 through dislocation-strained synergistic modulation.