Sep 2026· Journal of the American Chemical Society· 0 citations· 40 references
Abstract
The disorder–order transition of metal alloys delivers ordered intermetallic nanoparticles (NPs) as efficient and stable catalysts. However, this transition is practically challenging due to the thermodynamically low driving force and the complex kinetic competition with concurrent processes (e.g., phase separation). Here, we report a kinetic-controlled phase-capturing strategy for ordering multimetallic NPs via pulsed heating treatment. This strategy enables the rapid and universal synthesis of intermetallic NPs with varying elemental compositions (up to eight elements) and stoichiometric ratios in seconds (<10 pulses, down to 1 pulse). In situ transmission electron microscopy reveals a multistep transformation pathway, where disordered NPs premelt at the heating stage of each pulse and subsequently recrystallize toward metastable intermediate states or the final ordered structures via short-range atomic diffusion in the cooling stage. This work develops a promising concept for controllably synthesizing complex intermetallic NPs, as well as for obtaining versatile metastable structures in nanomaterials.
Controlling elemental mixing in nanoparticles composed of immiscible elements remains a central challenge in high-entropy materials design. Here, we demonstrate a kinetic pathway that enables a transition from elementally segregated to high-entropy AgNiCoCr nanoparticles using nanosecond laser-induced dewetting of meta...
Soumya Mandal, A. Mahata, Annaliese Colwell et al.· ACS Applied Nano Materials· 0 citations
High-entropy alloy nanoparticles (HEA NPs) constitute a promising class of materials for heterogeneous electro- and thermal catalysis due to their exceptional compositional tunability. However, precise structural control remains a challenge-particularly for quinary systems, where composition and structure are often int...
Felix Pohl, R. Stuckert, F. Calvo et al.· Nanoscale· 0 citations
Achieving controllable synthesis of metal-organic frameworks (MOFs) with precisely defined crystallinity, phase, orientation, thickness, and hierarchical architecture is essential for tailoring their properties across diverse applications, including gas separation, catalysis, and sensing. Electrochemical synthesis offe...
Guang Lu, L. Chi· Journal of Physical Chemistr...· 0 citations
High-entropy rare-earth oxides (HE-REOs) offer a broad compositional space for tuning defect chemistry, lattice distortion, and local atomic environments, yet their controlled synthesis as monodisperse and structurally well-defined nanostructures remains challenging. Here, we report a colloidal approach for the synth...
Han-Xin Fu, Ling-Chao Wang, Na-Chuan Li et al.· ACS Nanoscience Au· 0 citations
The ability to selectively control phase formation in metal halide perovskite nanocrystals is critical for understanding and optimizing their optoelectronic properties. Two-dimensional (2D) vacancy-ordered Cs3Bi2Br9 (CBB) nanocrystals have attracted interest in this domain, however, significant discrepancies in their...
Caitlin N. Ewald, D. Swain, G. J. Blanchard et al.· ACS Applied Optical Material...· 0 citations
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