https://doi.org/10.1051/epjconf/201816704009
Molybdenum oxide nanocolloids prepared by an external field-assisted laser ablation in water
1
Dip. di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra (MIFT),Università di Messina, 98166 Messina, Italy
2
Dip. di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Italia
* Corresponding author: salspadaro@unime.it (S. Spadaro);
* Corresponding author: martinabonsi@virgilio.it (M. Bonsignore)
Published online: 9 January 2018
he synthesis of extremely stable molybdenum oxide nanocolloids by pulsed laser ablation was studied. This green technique ensures the formation of contaminant-free nanostructures and the absence of by-products. A focused picosecond pulsed laser beam was used to ablate a solid molybdenum target immersed in deionized water. Molybdenum oxide nearly spherical nanoparticles with dimensions within few nanometers (20-100 nm) are synthesized when the ablation processes were carried out, in water, at room temperature and 80°C. The application of an external electric field during the ablation process induces a nanostructures reorganization, as indicated by Scanning-Transmission Electron Microscopy images analysis. The ablation products were also characterized by some spectroscopic techniques: conventional UV-vis optical absorption, atomic absorption, dynamic light scattering, micro-Raman and X-ray photoelectron spectroscopies. Finally, NIH/3T3 mouse fibroblasts were used to evaluate cell viability by the sulforhodamine B assay
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
