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Demonstrates enhanced hydrogen evolution reaction activity in MoS2 via Ti3C2Tx MXene, indicating effective material synergy.
In this work, MoS2/Ti3C2Tx MXene heterostructures were synthesized via a one-pot hydrothermal method with varying MXene concentrations to enhance the hydrogen evolution reaction (HER) performance of MoS2. Morphological and structural analyses confirm the successful formation of MoS2 nanoflowers uniformly anchored on MXene surfaces and interlayers. The optimized sample exhibits excellent HER activity with an overpotential of 108 mV at 10 mA cm–2, a Tafel slope of 51.02 mV dec–1, low charge transfer resistance (5.30 Ω), and high double-layer capacitance (107.18 mF cm–2). The enhanced performance is attributed to synergistic effects, including the stabilization of the metallic 1T phase of MoS2 induced by the heterostructure formation, Ti3C2Tx MXene interlayer expansion due to MoS2 insertion, and efficient MXene-mediated charge transport pathways. Overall, the optimized heterostructure shows a significant reduction in overpotential (∼82%) and increased electrochemically active surface area (∼75%) compared to reported hydrothermally synthesized MoS2/MXene systems, demonstrating a highly effective strategy for HER enhancement.
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Vijayan et al. (2026) studied this question.
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