| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Dumée, Ludo
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2019Wrinkled silica doped electrospun nano-fiber membranes with engineered roughness for advanced aerosol air filtrationcitations
- 2019Catalytic electrospun nano-composite membranes for virus capture and remediationcitations
- 2019One-pot synthesis of catalytic molybdenum based nanocomposite nano-fiber membranes for aerosol air remediationcitations
- 2019Mixed matrix Poly(vinyl alcohol)-Copper nanofibrous anti-microbial air-microfilterscitations
- 2018The growth of high density network of MOF nano-crystals across macroporous metal substrates - solvothermal synthesis versus rapid thermal depositioncitations
- 2017Inorganic nanoparticles/MOFs hybrid membrane reactors for CO2 separation and conversion
- 2016Exploring plasma technique for tuning surface energy of thin film composite membranes
- 2016Enhanced visible light absorption of titania nanotubes vie non-metal atom RF plasma doping
- 2016Assessing temporal and physical stability of functional groups introduced by surface plasma treatments across the outer shells of carbon nanotubes
Places of action
| Organizations | Location | People |
|---|
document
Assessing temporal and physical stability of functional groups introduced by surface plasma treatments across the outer shells of carbon nanotubes
Abstract
Plasma treatments are nowadays recognized as clean and effective methods to functionalize and tune the surface chemistry and roughness of materials. The purpose of this study is to assess the long term stability of surface functional groups introduced on the surface of graphene based materials for a series of oxidative, reductive and neutral plasma gas treatment conditions. Plasma treatments were performed across the surface of carbon nanotubes, assembled as non-woven called bucky-papers, with oxidative and neutral feed gases in order to evaluate the surface coverage density and the temporal stability of carboxylic and hydroxyl groups. Both a plasma duration based exposure and a time decay experiment, where the surface energy of the materials was evaluated periodically over a one-month period, were carried out. The nature of the morphological changes generated across the graphitic plans of the outer shells of the carbon nanotubes by the plasma treatment were assessed by scanning and transmission electron microscopy and little damage were shown to occur in these smooth plasma treatment conditions. On the other hand, the time dependence of the work function of the material suggested that the density of polar groups decreased non-linearly over time after plasma treatment prior to plateauing on average after 7 days post treatment. Raman spectroscopy analysis confirmed that the time decay related to the work function could be accounted to surface physical changes since Ig/Id ratio was found to be stable over time. The efficiency of the plasma technique towards the functionalization and the related stability of carbon nanotube surface chemistry are discussed in depth. Furthermore, the impact of the different functional groups densities were also assessed for specific seeding of nano-scale crystals, known as metal organic frameworks, with high catalytic activities and potential in waste remediation.