Melting Behaviour of Bi1-xSbx Free Standing Alloy Nanoparticles Synthesized via Solvothermal Route

Materials Research

Mayanglambam Manolata Devi¹  Krishanu Biswas¹ 

关键词: solvothermal route;    nanoalloys;    X-ray diffraction;    transmission electron microscopy;    melting;    solidification;    differential scanning calorimetry;   

DOI  :  10.1590/1516-1439.335214

来源: SciELO

【 摘 要 】

The present investigation aims at understanding the effect of size on melting behaviour of free standing alloy nanoparticles. Alloy nanoparticles of Bi1-xSbx (x=0.12, 0.25, 0.50 and 0.75) have been synthesized by solvothermal route using sodium borohydride (NaBH4) as a reducing agent. The samples were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The melting behaviour of alloys was determined by differential scanning calorimetry (DSC). The formation of different solid solution phases of Bi-Sb alloy has been confirmed by detailed XRD studies. Uniform cuboctahedral as well as spherical morphology of alloy nanoparticles has been observed in TEM with average particle size of 40±9 nm in Bi0.75Sb0.25 specimen. DSC studies indicate the depression in the melting temperature of the nanoparticles as compared to the bulk alloy of same composition.

【 授权许可】

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