In Situ Self-Assembly of Silver Nanoparticles
| Autor: | Lilia P. Burleva, Marat R. Sharafutdinov, Boris B. Bokhonov, David R. Whitcomb |
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| Rok vydání: | 2014 |
| Předmět: |
In situ
Nanostructure Materials science Thermal decomposition Chemical reaction Silver nanoparticle Surfaces Coatings and Films Electronic Optical and Magnetic Materials Crystallography chemistry.chemical_compound General Energy Chemical engineering chemistry Stearate Self-assembly Physical and Theoretical Chemistry Silver behenate |
| Zdroj: | The Journal of Physical Chemistry C. 118:11980-11989 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp501508a |
| Popis: | We have found that the thermal decomposition of [Ag(O2CnH2n–1)]2, where n = 14, 16, 18, and 22, produces the ordered 3D nanostructure (supracrystals) directly during the chemical reaction, which makes it possible to obtain self-assembled structures in large quantities without requiring additional processing steps. The process of self-assembling of silver nanoparticles is characterized by TEM and in situ time-resolved SAXRD and WAXS data. The calculated unit-cell parameters of the fcc nanostructures formed correlate with the aliphatic chain length: these are 9.55 nm for silver myristate (n = 14), 9.8 nm for silver palmitate (n = 16), 10.46 nm for silver stearate (n = 18), and 12.5 nm for silver behenate (n = 22). Structural and morphological characteristics of supracrystals formed in situ during the thermal decomposition of silver carboxylates are found to be dependent on the sample heating rate. The self-assembled ordering of the silver nanoparticles was observed to begin at ∼180, and above ∼280 °C the su... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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