The influence of dielectric permittivity of water on the shape of PtNPs synthesized in high-pressure high-temperature microwave reactor
Abstract In this paper, a novel method for the synthesis of Pt nanoparticles (PtNPs) using a microwave autoclave reactor is proposed. For benchmarking, the obtained results are compared with the traditional, batch method. A novel process window is proposed, which is the application of high-temperatu...
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2021
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oai:doaj.org-article:ac0cb399a48342b98e6408a593fa0aac2021-12-02T13:34:46ZThe influence of dielectric permittivity of water on the shape of PtNPs synthesized in high-pressure high-temperature microwave reactor10.1038/s41598-021-84388-22045-2322https://doaj.org/article/ac0cb399a48342b98e6408a593fa0aac2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84388-2https://doaj.org/toc/2045-2322Abstract In this paper, a novel method for the synthesis of Pt nanoparticles (PtNPs) using a microwave autoclave reactor is proposed. For benchmarking, the obtained results are compared with the traditional, batch method. A novel process window is proposed, which is the application of high-temperature and high-pressure. The main finding is that this only brings advantage, when the ionic strength of the system is enough low. It is explained, that at high pressure and high temperature, water behaves like only a slightly polar solvent, approaching a subcritical state. This reduces the electrostatic stabilization of the particles. Moreover, a change in the Pt particle shape is observed under high pressure and temperature conditions, suggesting that additional physical–chemical processes are involved.Marek WojnickiMagdalena Luty-BłochoPrzemysław KwolekMarta GajewskaRobert P. SochaZbigniew PędzichEdit CsapóVolker HesselNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021) |
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Medicine R Science Q Marek Wojnicki Magdalena Luty-Błocho Przemysław Kwolek Marta Gajewska Robert P. Socha Zbigniew Pędzich Edit Csapó Volker Hessel The influence of dielectric permittivity of water on the shape of PtNPs synthesized in high-pressure high-temperature microwave reactor |
| description |
Abstract In this paper, a novel method for the synthesis of Pt nanoparticles (PtNPs) using a microwave autoclave reactor is proposed. For benchmarking, the obtained results are compared with the traditional, batch method. A novel process window is proposed, which is the application of high-temperature and high-pressure. The main finding is that this only brings advantage, when the ionic strength of the system is enough low. It is explained, that at high pressure and high temperature, water behaves like only a slightly polar solvent, approaching a subcritical state. This reduces the electrostatic stabilization of the particles. Moreover, a change in the Pt particle shape is observed under high pressure and temperature conditions, suggesting that additional physical–chemical processes are involved. |
| format |
article |
| author |
Marek Wojnicki Magdalena Luty-Błocho Przemysław Kwolek Marta Gajewska Robert P. Socha Zbigniew Pędzich Edit Csapó Volker Hessel |
| author_facet |
Marek Wojnicki Magdalena Luty-Błocho Przemysław Kwolek Marta Gajewska Robert P. Socha Zbigniew Pędzich Edit Csapó Volker Hessel |
| author_sort |
Marek Wojnicki |
| title |
The influence of dielectric permittivity of water on the shape of PtNPs synthesized in high-pressure high-temperature microwave reactor |
| title_short |
The influence of dielectric permittivity of water on the shape of PtNPs synthesized in high-pressure high-temperature microwave reactor |
| title_full |
The influence of dielectric permittivity of water on the shape of PtNPs synthesized in high-pressure high-temperature microwave reactor |
| title_fullStr |
The influence of dielectric permittivity of water on the shape of PtNPs synthesized in high-pressure high-temperature microwave reactor |
| title_full_unstemmed |
The influence of dielectric permittivity of water on the shape of PtNPs synthesized in high-pressure high-temperature microwave reactor |
| title_sort |
influence of dielectric permittivity of water on the shape of ptnps synthesized in high-pressure high-temperature microwave reactor |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/ac0cb399a48342b98e6408a593fa0aac |
| work_keys_str_mv |
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