On the feasibility of strain-induced formation of hollows during hydriding or oxidation of metal nanoparticles.
basic_science · Level V
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- Record sourced from PubMed, PMID 19435384.
- Also identified by DOI 10.1021/nl9008293.
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Abstract
Hydriding or oxidation of a metal nanoparticle starts on the surface and results in the formation of a hydride or oxide shell. Due to expansion of the shell, the strain in the metal core is tensile, and in principle it may induce the formation of a hollow structure (this hollow-formation mechanism is alternative to that based on the Kirkendall effect). Using the theory of elasticity, we show that this is feasible for oxides but not feasible for hydrides.