Fig. 1: Schematic of controllable synthesis of HEA/c-PdSn by pulsed annealing. | Nature Communications

Fig. 1: Schematic of controllable synthesis of HEA/c-PdSn by pulsed annealing.

From: Finely tailoring the local ensembles in heterostructured high entropy alloy catalysts through pulsed annealing

Fig. 1

a Traditional HEA, PdSnFeCoNi, exhibits a homogeneous solid-solution structure. By applying pulsed annealing (~1300 K, 0.5 s, 30 times), active nanoclusters (e.g., PdSn) can precipitate from the HEA matrix, forming HEA/c-PdSn with well-balanced multifunctionality and site-specific reactivity. Excessively annealing can result in a phase-separated structure that reaches thermodynamic equilibrium and exhibits limited catalytic function and activity. b Schematic EOR process on conventional catalysts (e.g., Pd/C) and HEA/c-PdSn. The overall multifunctionality inherent in the HEA matrix and the site-specific reactivity facilitated by PdSn local clustering enable a much smoother energy landscape and largely enhanced EOR. RDS rate-determining steps.

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