Influence of Process Parameters and Reducing Agent on the Size of MoS<sub>2</sub> Nanoparticles Obtained in Impinging Jet Reactor
Molybdenum disulfide (MoS<sub>2</sub>) is an emerging material with exciting properties. Many consider it an excellent catalyst, particularly for hydrogen evolution reaction. Currently, it is used on a larger scale as a lubricant. The size of MoS<sub>2</sub> is a crucial para...
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MDPI AG
2022-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/21/11293 |
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| author | Zuzanna Bojarska Mateusz Mężydło Marta Mazurkiewicz-Pawlicka Łukasz Makowski |
| author_facet | Zuzanna Bojarska Mateusz Mężydło Marta Mazurkiewicz-Pawlicka Łukasz Makowski |
| author_sort | Zuzanna Bojarska |
| collection | DOAJ |
| description | Molybdenum disulfide (MoS<sub>2</sub>) is an emerging material with exciting properties. Many consider it an excellent catalyst, particularly for hydrogen evolution reaction. Currently, it is used on a larger scale as a lubricant. The size of MoS<sub>2</sub> is a crucial parameter defining its properties. A preparation method that is easily scalable and cheap is currently being sought. A solution might be a wet chemical synthesis method carried out in an impinging jet reactor. The simple design of the reactor and the possibility of continuous operation make this method unique. In this study, the influence of the reactor was investigated using numerical simulations. The S-type reactor showed better mixing and more control over the working conditions than T-type. Therefore, the S-type reactor was chosen as better for nanoparticle synthesis. We also investigated the influence of the process conditions on the size of the precipitated MoS<sub>2</sub> particles. The best operating conditions (i.e., Mo concentration of 0.2 mol/m<sup>3</sup>, reagent flow velocity of 20 mL/min, reaction temperature of 20 °C) were chosen to obtain the smallest particles (~200 µm). Additionally, two different reducing agents were also tested. The use of formic acid allowed obtaining smaller particle sizes but these were less stable than in the case of citric acid. |
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| format | Article |
| id | doaj.art-87ca97cf4a834b9484e1637d9d39c0ab |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T19:17:14Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-87ca97cf4a834b9484e1637d9d39c0ab2023-11-24T03:41:13ZengMDPI AGApplied Sciences2076-34172022-11-0112211129310.3390/app122111293Influence of Process Parameters and Reducing Agent on the Size of MoS<sub>2</sub> Nanoparticles Obtained in Impinging Jet ReactorZuzanna Bojarska0Mateusz Mężydło1Marta Mazurkiewicz-Pawlicka2Łukasz Makowski3Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, PolandFaculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, PolandFaculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, PolandFaculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, PolandMolybdenum disulfide (MoS<sub>2</sub>) is an emerging material with exciting properties. Many consider it an excellent catalyst, particularly for hydrogen evolution reaction. Currently, it is used on a larger scale as a lubricant. The size of MoS<sub>2</sub> is a crucial parameter defining its properties. A preparation method that is easily scalable and cheap is currently being sought. A solution might be a wet chemical synthesis method carried out in an impinging jet reactor. The simple design of the reactor and the possibility of continuous operation make this method unique. In this study, the influence of the reactor was investigated using numerical simulations. The S-type reactor showed better mixing and more control over the working conditions than T-type. Therefore, the S-type reactor was chosen as better for nanoparticle synthesis. We also investigated the influence of the process conditions on the size of the precipitated MoS<sub>2</sub> particles. The best operating conditions (i.e., Mo concentration of 0.2 mol/m<sup>3</sup>, reagent flow velocity of 20 mL/min, reaction temperature of 20 °C) were chosen to obtain the smallest particles (~200 µm). Additionally, two different reducing agents were also tested. The use of formic acid allowed obtaining smaller particle sizes but these were less stable than in the case of citric acid.https://www.mdpi.com/2076-3417/12/21/11293impinging jet reactorprecipitationMoS<sub>2</sub>CFD |
| spellingShingle | Zuzanna Bojarska Mateusz Mężydło Marta Mazurkiewicz-Pawlicka Łukasz Makowski Influence of Process Parameters and Reducing Agent on the Size of MoS<sub>2</sub> Nanoparticles Obtained in Impinging Jet Reactor Applied Sciences impinging jet reactor precipitation MoS<sub>2</sub> CFD |
| title | Influence of Process Parameters and Reducing Agent on the Size of MoS<sub>2</sub> Nanoparticles Obtained in Impinging Jet Reactor |
| title_full | Influence of Process Parameters and Reducing Agent on the Size of MoS<sub>2</sub> Nanoparticles Obtained in Impinging Jet Reactor |
| title_fullStr | Influence of Process Parameters and Reducing Agent on the Size of MoS<sub>2</sub> Nanoparticles Obtained in Impinging Jet Reactor |
| title_full_unstemmed | Influence of Process Parameters and Reducing Agent on the Size of MoS<sub>2</sub> Nanoparticles Obtained in Impinging Jet Reactor |
| title_short | Influence of Process Parameters and Reducing Agent on the Size of MoS<sub>2</sub> Nanoparticles Obtained in Impinging Jet Reactor |
| title_sort | influence of process parameters and reducing agent on the size of mos sub 2 sub nanoparticles obtained in impinging jet reactor |
| topic | impinging jet reactor precipitation MoS<sub>2</sub> CFD |
| url | https://www.mdpi.com/2076-3417/12/21/11293 |
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