A new study published by researchers from FAU Erlangen-Nürnberg, TU Bergakademie Freiberg, and University of Kassel explores a new way to separate nanoparticles using specially engineered supraparticle powders.
📄 Paper: 𝘚𝘶𝘱𝘳𝘢𝘱𝘢𝘳𝘵𝘪𝘤𝘭𝘦 𝘱𝘰𝘸𝘥𝘦𝘳𝘴 𝘢𝘴 𝘴𝘵𝘢𝘵𝘪𝘰𝘯𝘢𝘳𝘺 𝘱𝘩𝘢𝘴𝘦 𝘮𝘢𝘵𝘦𝘳𝘪𝘢𝘭𝘴 𝘧𝘰𝘳 𝘴𝘪𝘻𝘦-𝘦𝘹𝘤𝘭𝘶𝘴𝘪𝘰𝘯 𝘤𝘩𝘳𝘰𝘮𝘢𝘵𝘰𝘨𝘳𝘢𝘱𝘩𝘺 𝘰𝘧 𝘯𝘢𝘯𝘰𝘱𝘢𝘳𝘵𝘪𝘤𝘭𝘦𝘴
Authors: Umair Sultan | Lukas Hartmann | Céline Kohl | Allison Götz | Anna Krapf | Ralf Ditscherlein | Erik Löwer | Benoit Merle | Urs Alexander Peuker | Erdmann Spiecker | Martin Hartmann | Wolfgang Peukert | Benjamin Apeleo Zubiri | Malte Kaspereit | Nicolas Vogel
What the research is about
Nanoparticles are incredibly small materials used in areas such as medicine, electronics, and advanced materials. But because they are so tiny, it can be difficult for scientists to separate particles of different sizes and study them properly. In this study, researchers tested a new type of material called supraparticle powders. These are larger particles built from many smaller nanoparticles that cluster together, creating a structure with tiny pores and channels. The team used these supraparticles as the material inside a chromatography column, a tool scientists use to separate particles based on their size.
Why this matters
Accurately separating nanoparticles is essential for research and industrial applications. Many technologies rely on nanoparticles with very precise sizes and properties, but existing separation methods can struggle to distinguish them clearly.
What they found
Using gold nanoparticles as a test, the researchers showed that supraparticle powders can help separate extremely small particles by size:
- The pore size of the supraparticles strongly influences how nanoparticles move through the column.
- Different nanoparticle sizes exit the column at different times, enabling separation.
- By tuning the structure of the supraparticles, scientists could potentially control how particles are sorted and analyzed.
What it could mean for the future
This approach could lead to more precise tools for analyzing and sorting nanoparticles. That could benefit research fields ranging from nanomedicine and catalysis to advanced materials and electronics. More reliable separation methods also help scientists better understand how nanoparticles behave, which is key to developing new technologies.
What's next
The next step is testing whether this method works equally well for other nanomaterials. If successful, this could become a new platform for high-precision nanoparticle characterization.
