High-yield fabrication and properties of 1.4 nm nanodiamonds with narrow size distribution

0470485 - FZÚ 2017 RIV GB eng J - Článek v odborném periodiku
Stehlík, Štěpán - Varga, Marián - Ledinský, Martin - Miliaieva, Daria - Kozak, Halyna - Skakalova, V. - Mangler, C. - Pennycook, T. J. - Meyer, J.C. - Kromka, Alexander - Rezek, Bohuslav
High-yield fabrication and properties of 1.4 nm nanodiamonds with narrow size distribution.
Scientific Reports. Roč. 6, Dec (2016), 1-8, č. článku 38419. ISSN 2045-2322. E-ISSN 2045-2322
Grant CEP: GA ČR GA15-01809S
Institucionální podpora: RVO:68378271
Klíčová slova: detonation nanodiamonds * Raman-spectroscopy * diamond nanoparticles * selective oxidation * ion-implantation
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 4.259, rok: 2016

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.
Trvalý link: http://hdl.handle.net/11104/0268116