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Issue 15, 2017, Issue in Progress
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Laser-induced growth of YVO4:Eu3+ nanoparticles from sequential flowing aqueous suspension

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Abstract

Ligand-free lanthanide ion-doped oxide nanoparticles have critical biological applications. An environmentally friendly and chemically green synthesis of YVO4:Eu3+ nanoparticles with high crystallinity is achieved using a physical method, laser irradiation from sequential flowing aqueous suspension in a free liquid reactor. The fabricated nanoparticles have an ovoid or spindle shape depending on the number of laser irradiation cycles. A transmission electron microscopy study showed that spindle-like particles are single-crystalline with high crystallinity, which is beneficial for high luminescence efficiency. Strong light emission even from a single particle was confirmed by cathodoluminescence mapping. A possible mechanism of nanoparticle formation was proposed as follows. Primary nanocrystals were produced from the plasma plume and self-assembled into ovoid-like nanoparticles via oriented attachment. After several cycles of laser irradiation, we observed spindle-like nanoparticles that were much longer than the ovoid-like particles. The spindle-like nanoparticles grew as a result of the diffusion and coalescence of the ovoid-like nanoparticles during repetitive laser irradiation. These findings provide useful information for the formation of ligand-free luminescent nanoparticles with different sizes based on YVO4.

Graphical abstract: Laser-induced growth of YVO4:Eu3+ nanoparticles from sequential flowing aqueous suspension

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Publication details

The article was received on 13 Dec 2016, accepted on 24 Jan 2017 and first published on 30 Jan 2017


Article type: Paper
DOI: 10.1039/C6RA28118D
Citation: RSC Adv., 2017,7, 9002-9008
  • Open access: Creative Commons BY license
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    Laser-induced growth of YVO4:Eu3+ nanoparticles from sequential flowing aqueous suspension

    H. Wang, M. Lau, T. Sannomiya, B. Gökce, S. Barcikowski, O. Odawara and H. Wada, RSC Adv., 2017, 7, 9002
    DOI: 10.1039/C6RA28118D

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