Synthesis and characteristics of silica nano-particles using modified sol–gel method in microreactor
Sol-gel is one of the known and widely applied techniques in nano-particles synthesis. However, the conventional batch sol–gel method produces silica nano-particles with uneven shapes and wide size distribution. In the present work, silica nano-particles will be synthesized using a traditional sol–g...
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Elsevier Ltd
2020
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| Online Access: | http://umpir.ump.edu.my/id/eprint/31547/ http://umpir.ump.edu.my/id/eprint/31547/1/Material%20Today%20-%20Synthesis%20and%20characteristics%20of%20silica%20nano-particles%20using%20modified%20sol%E2%80%93gel%20method%20in%20microreactor.pdf |
| _version_ | 1848823795961298944 |
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| author | Fiona, W.M. Ling Abdulbari, Hayder A. Chin, Sim-Yee |
| author_facet | Fiona, W.M. Ling Abdulbari, Hayder A. Chin, Sim-Yee |
| author_sort | Fiona, W.M. Ling |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | Sol-gel is one of the known and widely applied techniques in nano-particles synthesis. However, the conventional batch sol–gel method produces silica nano-particles with uneven shapes and wide size distribution. In the present work, silica nano-particles will be synthesized using a traditional sol–gel method and a modified sol–gel technique by creating a microfluidic reactor. A olydimethylsiloxane microreactor was first designed and fabricated using the direct writing method. The microfluidic reactor was designed with a micro-droplets generation junction where the reactants are mixed to generate droplets where each droplet as an independent reactor. The synthesis process involved tetraethyl orthosilicate as a precursor, acetic acid as a catalyst and water as a hydrolysing agent. Transmission electron microscopy (TEM) was used to measure and evaluate the nano-particles size and distribution of the two sol–gel methods implemented. The silica nano-particles synthesized from conventional bench-scale sol–gel method showed poor monodispersity and not in a perfect spherical configuration that has an average size of 95 ± 4 nm. In contrast, highly monodispersed silica nano-particles were produced using a microreactor with an average size of 6 ± 1.3 nm, and the particles were in a perfect spherical configuration. The nano-particles produced from microflow system showed a reduction of 93.68% in size. The results indicated clearly that the micro-mixing associated with the micro-droplets generation is dynamically controlling the shape and size of the formulated nano-particles by controlling the droplet’s internal mixing mechanism. |
| first_indexed | 2025-11-15T03:02:49Z |
| format | Article |
| id | ump-31547 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:02:49Z |
| publishDate | 2020 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
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| spelling | ump-315472021-06-21T05:46:37Z http://umpir.ump.edu.my/id/eprint/31547/ Synthesis and characteristics of silica nano-particles using modified sol–gel method in microreactor Fiona, W.M. Ling Abdulbari, Hayder A. Chin, Sim-Yee TP Chemical technology Sol-gel is one of the known and widely applied techniques in nano-particles synthesis. However, the conventional batch sol–gel method produces silica nano-particles with uneven shapes and wide size distribution. In the present work, silica nano-particles will be synthesized using a traditional sol–gel method and a modified sol–gel technique by creating a microfluidic reactor. A olydimethylsiloxane microreactor was first designed and fabricated using the direct writing method. The microfluidic reactor was designed with a micro-droplets generation junction where the reactants are mixed to generate droplets where each droplet as an independent reactor. The synthesis process involved tetraethyl orthosilicate as a precursor, acetic acid as a catalyst and water as a hydrolysing agent. Transmission electron microscopy (TEM) was used to measure and evaluate the nano-particles size and distribution of the two sol–gel methods implemented. The silica nano-particles synthesized from conventional bench-scale sol–gel method showed poor monodispersity and not in a perfect spherical configuration that has an average size of 95 ± 4 nm. In contrast, highly monodispersed silica nano-particles were produced using a microreactor with an average size of 6 ± 1.3 nm, and the particles were in a perfect spherical configuration. The nano-particles produced from microflow system showed a reduction of 93.68% in size. The results indicated clearly that the micro-mixing associated with the micro-droplets generation is dynamically controlling the shape and size of the formulated nano-particles by controlling the droplet’s internal mixing mechanism. Elsevier Ltd 2020-08-29 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/31547/1/Material%20Today%20-%20Synthesis%20and%20characteristics%20of%20silica%20nano-particles%20using%20modified%20sol%E2%80%93gel%20method%20in%20microreactor.pdf Fiona, W.M. Ling and Abdulbari, Hayder A. and Chin, Sim-Yee (2020) Synthesis and characteristics of silica nano-particles using modified sol–gel method in microreactor. Materials Today: Proceedings, 42. pp. 1-7. ISSN 2214-7853. (Published) http://www.elsevier.com/locate/matpr https://doi.org/10.1016/j.matpr.2020.07.563 |
| spellingShingle | TP Chemical technology Fiona, W.M. Ling Abdulbari, Hayder A. Chin, Sim-Yee Synthesis and characteristics of silica nano-particles using modified sol–gel method in microreactor |
| title | Synthesis and characteristics of silica nano-particles using modified
sol–gel method in microreactor |
| title_full | Synthesis and characteristics of silica nano-particles using modified
sol–gel method in microreactor |
| title_fullStr | Synthesis and characteristics of silica nano-particles using modified
sol–gel method in microreactor |
| title_full_unstemmed | Synthesis and characteristics of silica nano-particles using modified
sol–gel method in microreactor |
| title_short | Synthesis and characteristics of silica nano-particles using modified
sol–gel method in microreactor |
| title_sort | synthesis and characteristics of silica nano-particles using modified
sol–gel method in microreactor |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/31547/ http://umpir.ump.edu.my/id/eprint/31547/ http://umpir.ump.edu.my/id/eprint/31547/ http://umpir.ump.edu.my/id/eprint/31547/1/Material%20Today%20-%20Synthesis%20and%20characteristics%20of%20silica%20nano-particles%20using%20modified%20sol%E2%80%93gel%20method%20in%20microreactor.pdf |