| Partner: T. Švarc |
Recent publications
| 1. | Jelen Z.♦, Krajewski M., Zupanič F.♦, Majerič P.♦, Švarc T.♦, Anžel I.♦, Ekar J.♦, Liou S.♦, Kubacki J.♦, Tokarczyk M.♦, Rudolf R.♦, Melting point of dried gold nanoparticles prepared with ultrasonic spray pyrolysis and lyophilisation, nanotechnology reviews, ISSN: 2191-9097, DOI: 10.1515/ntrev-2022-0568, Vol.12, No.1, pp.1-12, 2023 Abstract: A coupled process of ultrasonic spray pyrolysis and lyophilisation was used for the synthesis of dried gold nanoparticles. Two methods were applied for determining their melting temperature: uniaxial microcompression and differential scanning calorimetry (DSC) analysis. Uniaxial microcompression resulted in sintering of the dried gold nanoparticles at room temperature with an activation energy of 26–32.5 J/g, which made it impossible to evaluate their melting point. Using DSC, the melting point of the dried gold nanoparticles was measured to be around 1064.3°C, which is close to pure gold. The reason for the absence of a melting point depression in dried gold nanoparticles was their exothermic sintering between 712 and 908.1°C. Keywords:gold nanoparticles, melting point, ultrasonic spray pyrolysis, characterisation Affiliations:
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