Mesocrystals from Platinum Nanocubes
Platinum nanoparticles are widely known for their numerous electrochemical and catalytic applications. Enhanced or novel properties that may arise when ordering such particles in a highly defined manner, however, are still subject to ongoing research, as superstructure formation on the mesoscale is...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-08-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/11/8/2122 |
| _version_ | 1797522582132490240 |
|---|---|
| author | Christian Jenewein Helmut Cölfen |
| author_facet | Christian Jenewein Helmut Cölfen |
| author_sort | Christian Jenewein |
| collection | DOAJ |
| description | Platinum nanoparticles are widely known for their numerous electrochemical and catalytic applications. Enhanced or novel properties that may arise when ordering such particles in a highly defined manner, however, are still subject to ongoing research, as superstructure formation on the mesoscale is still a major challenge to be overcome. In this work, we therefore established a reproducible method to fabricate micrometer-sized superstructures from platinum nanocubes. Through small-angle X-ray scattering and electron diffraction methods we demonstrate that the obtained superstructures have a high degree of ordering up to the atomic scale and, therefore, fulfill all criteria of a mesocrystal. By changing the solvent and stabilizer in which the platinum nanocubes were dispersed, we were able to control the resulting crystal habit of the mesocrystals. Aside from mesocrystal fabrication, this method can be further utilized to purify nanoparticle dispersions by recrystallization with respect to narrowing down the particle size distribution and removing contaminations. |
| first_indexed | 2024-03-10T08:31:28Z |
| format | Article |
| id | doaj.art-ae276f34aefa4210be9c04d4777fe726 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T08:31:28Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-ae276f34aefa4210be9c04d4777fe7262023-11-22T09:00:48ZengMDPI AGNanomaterials2079-49912021-08-01118212210.3390/nano11082122Mesocrystals from Platinum NanocubesChristian Jenewein0Helmut Cölfen1Physical Chemistry, University of Konstanz, Universitätsstr. 10, D-78457 Konstanz, GermanyPhysical Chemistry, University of Konstanz, Universitätsstr. 10, D-78457 Konstanz, GermanyPlatinum nanoparticles are widely known for their numerous electrochemical and catalytic applications. Enhanced or novel properties that may arise when ordering such particles in a highly defined manner, however, are still subject to ongoing research, as superstructure formation on the mesoscale is still a major challenge to be overcome. In this work, we therefore established a reproducible method to fabricate micrometer-sized superstructures from platinum nanocubes. Through small-angle X-ray scattering and electron diffraction methods we demonstrate that the obtained superstructures have a high degree of ordering up to the atomic scale and, therefore, fulfill all criteria of a mesocrystal. By changing the solvent and stabilizer in which the platinum nanocubes were dispersed, we were able to control the resulting crystal habit of the mesocrystals. Aside from mesocrystal fabrication, this method can be further utilized to purify nanoparticle dispersions by recrystallization with respect to narrowing down the particle size distribution and removing contaminations.https://www.mdpi.com/2079-4991/11/8/2122mesocrystalself-assemblyplatinumnanoparticlenanocubessuperlattice |
| spellingShingle | Christian Jenewein Helmut Cölfen Mesocrystals from Platinum Nanocubes Nanomaterials mesocrystal self-assembly platinum nanoparticle nanocubes superlattice |
| title | Mesocrystals from Platinum Nanocubes |
| title_full | Mesocrystals from Platinum Nanocubes |
| title_fullStr | Mesocrystals from Platinum Nanocubes |
| title_full_unstemmed | Mesocrystals from Platinum Nanocubes |
| title_short | Mesocrystals from Platinum Nanocubes |
| title_sort | mesocrystals from platinum nanocubes |
| topic | mesocrystal self-assembly platinum nanoparticle nanocubes superlattice |
| url | https://www.mdpi.com/2079-4991/11/8/2122 |
| work_keys_str_mv | AT christianjenewein mesocrystalsfromplatinumnanocubes AT helmutcolfen mesocrystalsfromplatinumnanocubes |