High-yield fabrication and properties of 1.4 nm nanodiamonds with narrow size distribution
- Author(s)
- Stepan Stehlik, Marian Varga, Martin Ledinsky, Daria Miliaieva, Halyna Kozak, Viera Skakalova, Clemens Mangler, Timothy J. Pennycook, Jannik C. Meyer, Alexander Kromka, Bohuslav Rezek
- Abstract
Detonation nanodiamonds (DNDs) with a typical size of 5 nm have attracted broad interest in science and technology. Further size reduction of DNDs would bring these nanoparticles to the molecular- size level and open new prospects for research and applications in various fields, ranging from quantum physics to biomedicine. Here we show a controllable size reduction of the DND mean size down to 1.4 nm without significant particle loss and with additional disintegration of DND core agglutinates by air annealing, leading to a significantly narrowed size distribution (+/- 0.7 nm). This process is scalable to large quantities. Such molecular- sized DNDs keep their diamond structure and characteristic DND features as shown by Raman spectroscopy, infrared spectroscopy, STEM and EELS. The size of 1 nm is identified as a limit, below which the DNDs become amorphous.
- Organisation(s)
- Physics of Nanostructured Materials
- External organisation(s)
- Czech Academy of Sciences, Czech Technical University in Prague (CTU)
- Journal
- Scientific Reports
- Volume
- 6
- No. of pages
- 8
- ISSN
- 2045-2322
- DOI
- https://doi.org/10.1038/srep38419
- Publication date
- 12-2016
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103018 Materials physics
- Keywords
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/highyield-fabrication-and-properties-of-14-nm-nanodiamonds-with-narrow-size-distribution(e89560c7-aaad-466d-aa63-6e7eaf4d5e34).html