Development of nanoparticle bulk morphology analysis: a multidomain XRD approach

Article Multidisciplinary Sciences

Imaging the facet surface strain state of supported multi-faceted Pt nanoparticles during reaction

Maxime Dupraz et al.

Summary: This study reveals the relationship between crystallographic facets and strain evolution in Pt nanoparticles, providing new insights into the connection between facet-related surface strain and chemistry.

NATURE COMMUNICATIONS (2022)

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Article Chemistry, Physical

Growth mechanisms from tetrahedral seeds to multiply twinned Au nanoparticles revealed by atomistic simulations

El Yakout El Koraychy et al.

Summary: Through simulations, it is found that the growth of gold nanoparticles from tetrahedral to multiply twinned structures can occur through different pathways, with twinning initiated by the preferential nucleation of faulted atomic islands near facet edges.

NANOSCALE HORIZONS (2022)

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Article Chemistry, Multidisciplinary

Laser-ablation assisted strain engineering of gold nanoparticles for selective electrochemical CO2 reduction

Chao Zhang et al.

Summary: This study demonstrates the synthesis of gold nanoparticles with rich compressive strain and the significant improvement in electrochemical CO2 reduction performance. The presence of compressive strain alters the electronic structure of gold nanoparticles, enhancing the adsorption strength towards key intermediates.

NANOSCALE (2022)

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Article Chemistry, Multidisciplinary

Strain-Induced Modulation of Localized Surface Plasmon Resonance in Ultrathin Hexagonal Gold Nanoplates

Gyeong-Su Park et al.

Summary: Research using high spatial- and spectral-resolution mapping of LSPR modes and nanoscale strain mapping investigates the distribution of LSPR modes and the effect of defect-induced strains on properties.

ADVANCED MATERIALS (2021)

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Article Multidisciplinary Sciences

Shape control of size-selected naked platinum nanocrystals

Yu Xia et al.

Summary: This study reports the controlled production and transformation of platinum nanocrystals from octahedra to tetrahedra in an inert gas environment. Molecular dynamics simulations revealed the symmetry-breaking atomic mechanism for this shape transformation, and in-situ heating experiments demonstrated the relative stability of both structures at least up to 700 degrees C. Tetrahedral nanocrystals are out-of-equilibrium structures with a growth mechanism that is still an open problem, but the authors identified a defect-mediated mechanism for tetrahedral growth.

NATURE COMMUNICATIONS (2021)

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Article Multidisciplinary Sciences

Twin boundary migration in an individual platinum nanocrystal during catalytic CO oxidation

Jerome Carnis et al.

Summary: At the nanoscale, elastic strain and crystal defects significantly impact the properties and functionalities of materials. This study demonstrates an unusual twin boundary migration process in a single platinum nanoparticle during CO oxidation using Bragg coherent diffraction imaging, providing insights into defect behavior in confined crystals.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

Coordination-Dependent Kinetics in the Catalysis of Gold Nanoclusters

Forrest H. Kaatz et al.

Summary: A coordination-based kinetic model was used to explore the turnover frequency in the oxidation of carbon monoxide on gold polyhedral nanoclusters. Factors such as coordination, shape, and the Gibbs energy of adsorption were found to be important in replicating experimental results. The Langmuir-Hinshelwood mechanism was shown to model the experimental results more closely.

ACS CATALYSIS (2021)

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Article Multidisciplinary Sciences