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    • Keywords


      LaB$_6$; microstructure; melt-assisted synthesis; photothermal conversion.

    • Abstract


      Lanthanum hexaboride (LaB$_6$) nanocrystals and cubes were successfully synthesized at 700$^{\circ}$C for 2 h underargon atmosphere by a melt-assisted method using LaCl$_3$ and NaBH$_4$ as reactants, NaCl–KCl or zinc or NaCl–KCl–zincas reaction melt. The obtained products were characterized by X-ray diffraction (XRD), scanning electron microscopy(SEM), transmission electron microscopy (TEM) and Raman spectroscopy. XRD patterns and Raman spectra confirmedthe formation of LaB6 with high purity. TEM and SEM results showed LaB6 powders prepared in mixed molten salts ofNaCl–KCl were mainly composed of nanoparticles with sizes of ca. 8 nm. The morphology of LaB$_6$ presented as regularcubes (100–300 nm) when metal zinc was used as reaction melt. Photothermal conversion test indicated that nanoparticleshad a better photothermal conversion performance than cubes.

    • Author Affiliations



      1. School of Chemistry and Materials Science, Ludong University, Yantai 264025, People’s Republic of China
    • Dates

  • Bulletin of Materials Science | News

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