Back to Search
Start Over
Post-synthesis heating, a key step to tune the LPR band of gold nanorods covered with CTAB or embedded in a silica shell.
- Source :
-
Gold Bulletin . Oct2022, Vol. 55 Issue 2, p195-205. 11p. - Publication Year :
- 2022
-
Abstract
- The transitioning of nanotechnology from laboratory to industrial-scale manufacturing poses various challenges in nanoparticle realization. From this perspective, beside the conventional synthetic procedure, based on the seed-mediated growth approach, a reshaping thermal strategy has been investigated to improve the control on gold nanorods aspect ratio, with the aim to point out a potential and encouraging way to better manage the scalability and reproducibility of nanoparticles. For this purpose, nanorods covered with CTAB and nanorods enclosed within a silica shell of tuned thickness have been synthesized and submitted to a post-thermal treatment at various temperatures, up to 300 °C for CTAB recovered gold nanorods (AuNR@CTAB), and up to 500 °C for silica-shell embedded gold nanorods (AuNR@SiO2). For AuNR@CTAB, through accurate temperature control, the longitudinal plasmonic band can be moved very close to the transversal one upon slight reduction of their length. Instead, for AuNR@SiO2, owing to the fully inorganic shell, a higher temperature of treatment can be reached leading to the possibility of reshaping the nanorods into spheres without the observation of any by-products. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NANORODS
*TEMPERATURE control
*GOLD nanoparticles
*HEATING
*SILICA
Subjects
Details
- Language :
- English
- ISSN :
- 10278591
- Volume :
- 55
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Gold Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 159439468
- Full Text :
- https://doi.org/10.1007/s13404-022-00320-0