Synthesis of molybdenum oxide nanoparticles by nanosecond laser ablation
Phothermal therapy (PTT) is one of the most promising techniques to treat cancer. Finding the ideal PTT agent nanomaterial has remained a challenge and has brought the interest of several researchers. In this work, we report the synthesis of molybdenum oxide (MoOx) nanoparticles (NPs), which exhibit...
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Veröffentlicht in: | Materials chemistry and physics 2020-01, Vol.240, p.122163, Article 122163 |
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Sprache: | eng |
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Zusammenfassung: | Phothermal therapy (PTT) is one of the most promising techniques to treat cancer. Finding the ideal PTT agent nanomaterial has remained a challenge and has brought the interest of several researchers. In this work, we report the synthesis of molybdenum oxide (MoOx) nanoparticles (NPs), which exhibit absorption in the biological optical window ~840 nm, by using the laser ablation of solids in liquids (LASL) technique with nanosecond (ns) pulses. A Nd:YAG laser was used to synthesize the NPs in deionized (DI) water, free of surfactants or additives, which were optically characterized by absorption spectroscopy and TEM-EDX microscopy. Semi spherical NPs with a suitable average size and shape for potential use as PTT agents were obtained by laser ablation and ablation + fragmentation. The calculated band gap is 3.1 eV, which corresponds to MoO3. Micro-Raman spectroscopy studies determined that these NPs are composed of amorphous molybdenum oxide hydrates (MoO3 · xH2O).
•MoOx NPs were successfully synthesized by the LASL method with ns pulses.•MoOx NPs possess an absorption peak located at around 840 nm.•The produced MoOx NPs show potential for Photothermal Theraphy applications.•MoOx NPs are constituted of amorphous molybdenum oxide hydrates (MoO3·xH2O). |
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ISSN: | 0254-0584 1879-3312 |
DOI: | 10.1016/j.matchemphys.2019.122163 |