Электронный каталог

Статья

Ushkov, A.
Laser-Synthesized Amorphous PdSe&sub(2-x) Nanoparticles: A Defect-Rich Platform for High-Efficiency SERS, Photocatalysis, and Photothermal Conversion / A.Ushkov, N.Belozerova, D.Dyubo, [a.o.]. – Text : electronic // Advanced Materials Interfaces. – 2026. – Vol. 13, No. 8. – P. e00902. – URL: https://doi.org/10.1002/admi.202500902. – Bibliogr.: 70.

The control of material properties at the atomic scale remains a central challenge in materials science. Transition metal dichalcogenides (TMDCs) offer remarkable electronic and optical properties, but their functionality is largely dictated by their stable crystalline phases. Here, we demonstrate a single-step, ligand-free strategy using femtosecond laser ablation in liquid to transform crystalline, stoichiometric palladium diselenide (PdSe&sub(2)) into highly stable, amorphous, and non-stoichiometric nanoparticles ( PdSe&sub(2-x), with x ≈1). This laser-driven amorphization creates a high density of selenium vacancies and coordinatively unsaturated sites, which unlock a range of emergent functions absent in the crystalline precursor, including plasmon-free surface-enhanced Raman scattering with an enhancement factor exceeding 10*6, a 50-fold increase in photocatalytic activity, and near-infrared photothermal conversion efficiency reaching 83%. Our findings establish laser-induced amorphization as a powerful top-down approach for defect-engineered TMDCs and advances their practical usage in optics, catalysis, and nanomedicine.



Спец.(статьи,препринты) = С 33 а - Нанофизика. Нанотехнология$
Спец.(статьи,препринты) = С 332.8 - Синхротронное излучение. Лазеры на свободных электронах. Получение и использование рентгеновских лучей
ОИЯИ = ОИЯИ (JINR)2026
Бюллетени = 35/026