O-termination-induced electronic modulation in MXene-based heterostructures toward sustainable hydrogen evolution (IMAGE)

Tsinghua University Press

O-termination-induced electronic modulation in MXene-based heterostructures toward sustainable hydrogen evolution

Caption

Ti3C2Tx MXene convert -F to -O terminals by an n-butyllithium strategy, achieving controllable -O/-F ratios. The resulting Pt/Ti3C2Tx-9 and MoS2/Ti3C2Tx-9 heterostructures exhibit dramatically lowered overpotentials, revealing distinct electronic modulation mechanisms: -O groups facilitate electron depletion in Pt NPs to enhance H* adsorption, while simultaneously inducing electron accumulation on Mo sites to alleviate excessive H* binding. These findings provide a clear strategy for the surface engineering of MXenes to maximize their potential in high-performance energy conversion applications.

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Journal of Advanced Ceramics, Tsinghua University Press

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