Impact of C-CVD synthesis conditions on the hydraulic and electronic properties of SiC/CNTs nanocomposite microfiltration membranes
| Autor: | Alexandre F. Santos, Catherine Batiot-Dupeyrat, Benoit Teychene, Alexandre Poli, Patrick Baldoni-Andrey, Ghadi Dagher, Matthieu Jacob |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Nanocomposite Mechanical Engineering Microfiltration General Chemistry Carbon nanotube Chemical vapor deposition Electronic Optical and Magnetic Materials law.invention Membrane Electrical resistance and conductance Chemical engineering law visual_art Materials Chemistry visual_art.visual_art_medium Ceramic Electrical and Electronic Engineering Layer (electronics) |
| Zdroj: | Diamond and Related Materials. 120:108611 |
| ISSN: | 0925-9635 |
| DOI: | 10.1016/j.diamond.2021.108611 |
| Popis: | In this study, commercial SiC ceramic microfiltration membranes were coated with carbon nanotubes (CNTs) using chemical vapor deposition (CVD) to obtain a conductive and hydrophobic membrane material. In order to have better control of the surface and electronic properties of the developed material, two adjacent fractional factorial designs (25-2) were implemented to quantify CNTs synthesis parameters influence. The design of experiments revealed that the quantity of the synthesized CNTs was mainly controlled by CVD temperature, duration and iron catalyst concentration. The structure of the CNTs layer was mainly controlled by CVD temperature within the investigated parameter range (650–850 °C). It was demonstrated that pure water permeability was anti-correlated with CNTs synthesis yield due to an increase in membranes' hydrophobicity and potential pore blockage. The membrane coated with the largest amount of CNTs was obtained at 850 °C for a duration of at least 1 h and showed relatively low electrical resistance and good microwave absorption. Finally, such tunable nanocomposite material has the potential to further improve the filtration performances and membranes widespread application. |
| Databáze: | OpenAIRE |
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