Ultrasonic method of manufacturing nanowires, nanostrings, nano rods and / or nano sticks of luminescent aluminates and nanostructured composites and its usage

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Patent Details

Publication Number
PT105107
Priority Date
2010-05-07
Publication Date
2011-11-07
International Patent Classification
B82B1/00
B82B3/00
C09K11/77

Figures

figura
Example of aligned luminescent aluminate SrAl2O4: Ce3+, Eu2+, Dy3+ nanowires.

Abstract

The present invention relates to a method of manufacturing new luminescent nanowires, nanostrings, nanorods and/or nanosticks of beryllium, magnesium, calcium, strontium or barium doped cerium (III) aluminates, which uses mechanical ultrasonic energy vibrations (ultrasonication), in addition to milling of precursor particles and re-firing. Such nanomaterials that can be co-doped with other elements of the lanthanide series, have a diameter between 1 and 300 nm and aspect ratio between 3 and 3000, with luminescence optics, photocatalytic, magnetic, electronic, and biological uses, being macro-, micro- or nano-functionalized, as well as, incorporated into a matrix to make new nanostructured composite materials.

Innovative aspects & main advantages

The present invention relates to a new method of manufacturing luminescent nanowires and nanorods of alkaline earth aluminate aluminates (Be, Mg, Ca, Sr, Ba) luminescent aluminates alkaline earth aluminate aluminates (Be, Mg, Ca, Sr, Ba) doped cerium (III), which may be co-doped with other elements of the lanthanide series. The method combines grinding and ultrasonic energy to generate and activate the precursor particles, followed by s suitable heat treatment.

Applications

The nanowires and nanorods are interesting nanomaterials for applications in optoelectronics, photovoltaic cells, biomedical devices and biosensors (drug release, cell detection, diagnostic imaging, loading of DNA structures, etc.).

Inventors

Ferreira, José; Zurba, Nadia

Our Inventors

foto José Maria da Fonte Ferreira

José Maria da Fonte Ferreira

Retired Professor

Applicant

Universidade de Aveiro

Groups Involved

3 - carbon materials, composites and functional coatings
4 - biorefineries, biobased materials and recycling
6 - computer simulation and multiscale modeling

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