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Related Experiment Video

Updated: Sep 15, 2025

Solvothermal Synthesis of MIL-96 and UiO-66-NH2 on Atomic Layer Deposited Metal Oxide Coatings on Fiber Mats

Solvothermal Synthesis of MIL-96 and UiO-66-NH2 on Atomic Layer Deposited Metal Oxide Coatings on Fiber Mats

Published on: June 13, 2018

Solvation directed morphological control in metal oxide nanostructures.

Duo Song¹, Lili Liu¹, Andrew Ritchhart¹

¹Pacific Northwest National Laboratory, Richland, WA, USA. maria.sushko@pnnl.gov(MariaSushko).

|July 16, 2025

Summary

Hierarchical structures form via heterogeneous nucleation driven by nanoparticle dipole and solvation forces. These forces control crystal morphology and branching without needing external agents.

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Last Updated: Sep 15, 2025

Solvothermal Synthesis of MIL-96 and UiO-66-NH2 on Atomic Layer Deposited Metal Oxide Coatings on Fiber Mats

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Writing and Low-Temperature Characterization of Oxide Nanostructures

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Fabrication of Spatially Confined Complex Oxides

Fabrication of Spatially Confined Complex Oxides

Published on: July 1, 2013

Area of Science:

Materials Science
Nanotechnology
Crystallization Science

Background:

Hierarchical structures are common in nature and synthetic nanomaterials.
Formation mechanisms involve interfacial interactions and interparticle forces.
Crystallization often proceeds via monomer addition, with complexity arising from interfacial coupling.

Purpose of the Study:

To elucidate the driving forces behind hierarchical structure development during heterogeneous nucleation.
To understand the role of dipolar and solvation forces in controlling nanocrystal architecture.
To reveal mechanisms for dimensionality control without ligands.

Main Methods:

Coupled computational simulations and experimental studies.
Analysis of dipole build-up and solvation interactions.
Investigation of chemical coupling between solvents and nanocrystal surfaces.

Main Results:

Dipolar forces and dipole build-up along the growth direction drive twinning and branching.
Enthalpic solvation interactions modulate nanoparticle dipole moments, controlling morphology.
Ligand-free hierarchical structures form through solvent-surface interactions.

Conclusions:

Heterogeneous nucleation of hierarchical structures is governed by electrostatic and solvation forces.
Nanoparticle dipole moments and solvation effects are key to controlling crystal architecture.
This work provides a mechanism for directed self-assembly of complex nanomaterials.