RT Journal Article
T1 From multi- to single-hollow trimetallic nanocrystals by ultrafast heating
A1 Manzaneda González, Vanesa
A1 Jenkinson, Kellie
A1 Peña-Rodríguez, Ovidio
A1 Borrell Grueiro, Olivia
A1 Triviño-Sánchez, Sergio
A1 Bañares Morcillo, Luis
A1 Junquera González, María Elena
A1 Espinosa, Ana
A1 González-Rubio, Guillermo
A1 Bals, Sara
A1 Guerrero Martínez, Andrés
AB Metal nanocrystals (NCs) display unique physicochemical features that are highly dependent on nanoparticle dimensions, anisotropy, structure, and composition. The development of synthesis methodologies that allow us to tune such parameters finely emerges as crucial for the application of metal NCs in catalysis, optical materials, or biomedicine. Here, we describe a synthetic methodology to fabricate hollow multimetallic heterostructures using a combination of seed-mediated growth routes and femtosecond-pulsed laser irradiation. The envisaged methodology relies on the coreduction of Ag and Pd ions on gold nanorods (Au NRs) to form Au@PdAg core−shell nanostructures containing small cavities at the Au−PdAg interface. The excitation of Au@PdAg NRs with low fluence femtosecond pulses was employed to induce the coalescence and growth of large cavities, forming multihollow anisotropic Au@PdAg nanostructures. Moreover, single-hollow alloy AuPdAg could be achieved in high yield by increasing the irradiation energy. Advanced electron microscopy techniques, energy-dispersive X-ray spectroscopy (EDX) tomography, X-ray absorption near-edge structure (XANES) spectroscopy, and finite differences in the time domain (FDTD) simulations allowed us to characterize the morphology, structure, and elemental distribution of the irradiated NCs in detail. The ability of the reported synthesis route to fabricate multimetallic NCs with unprecedented hollow nanostructures offers attractive prospects for the fabrication of tailored high-entropy alloy nanoparticles.
PB ACS
SN 0897-4756
SN 1520-5002
YR 2023
FD 2023
LK https://hdl.handle.net/20.500.14352/108992
UL https://hdl.handle.net/20.500.14352/108992
LA eng
NO Manzaneda-González, Vanesa, et al. «From Multi- to Single-Hollow Trimetallic Nanocrystals by Ultrafast Heating». Chemistry of Materials, vol. 35, n.o 22, noviembre de 2023, pp. 9603-12. DOI.org (Crossref), https://doi.org/10.1021/acs.chemmater.3c01698
NO Ministerio de Ciencia, Innovación y Universidades
NO Comunidad Autónoma de Madrid
DS Docta Complutense
RD 10 abr 2025