Solvothermal synthesis of raspberry-like YVO4:Eu nanoparticles in methanol-water system
YVO4:Eu nanoparticles with controllable size were successfully fabricated by the original solvothermal method at 300°C for 3 hours employing methanol-water solution. The effect of the solution pH on size and morphology of the YVO4:Eu particles was examined. SEM micrographs have revealed that the pow...
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| Main Authors: | , , , , |
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| Format: | Conference Proceeding |
| Published: |
2018
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| Subjects: | |
| Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77950808379&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/49165 |
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| Institution: | Chiang Mai University |
| Summary: | YVO4:Eu nanoparticles with controllable size were successfully fabricated by the original solvothermal method at 300°C for 3 hours employing methanol-water solution. The effect of the solution pH on size and morphology of the YVO4:Eu particles was examined. SEM micrographs have revealed that the powders are composed of raspberry-like particles with a diameter of 250-450 nm that are comprised by the primary spherical particles in the range of 14-20 nm. The sizes of the primary particles decrease with the increase of pH. Post-annealing at 1000°C improved the luminescence intensity of the YVO4:Eu red phosphor, whereas the raspberry-like shapes of the powders prepared in acidic solutions have retained. The powders prepared under basic conditions experienced considerable sintering. |
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