• Chapitre d'ouvrage

On the chemistry of the conversion coatings

Oumaïma Gharbi, Kevin Ogle, Junsoo Han

A conversion coating is an inorganic or organic–inorganic hybrid surface film conveying specific desirable functions to a material, formed by a spontaneous reaction between the material and an electrolyte. This chapter reviews the fundamental physical chemistry of the conversion coating process and…

Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, 3, Elsevier, pp.532-546, 2024, ISBN: 978-0-12-409547-2. ⟨10.1016/B978-0-323-85669-0.00091-X⟩. ⟨hal-04049955⟩

• Article dans une revue

Effect of nanocrystallization on the structure and the magnetic properties of Nd–Fe–Co–Al–B glassy alloy

Lotfi Bessais, C. Djéga-Mariadassou, P. Beaunier

Nd 40 Fe 30 Co 15 Al 10 B 5 bulk amorphous prepared by high energy milling shows a coercivity of 650kA∕m with a Curie temperature of 645K. The controlled nanocrystallization enhances the coercivity to 1600kA∕m and the remanence ratio is equal to 0.59. The coexistence of two crystalline magnetic…

Journal of Applied Physics, 2006, 99 (9), ⟨10.1063/1.2195367⟩. ⟨hal-04232420⟩

• Article dans une revue

One-pot synthesis of a new generation of hybrid bisphosphonate polyoxometalate gold nanoparticles as antibiofilm agents

S. Tomane, E. López-Maya, S. Boujday, V. Humblot, J. Marrot, N. Rabasso, J. Castells-Gil, C. Sicard, Anne Dolbecq, P. Mialane, A Vallée

A reduced polyoxovanadate functionalized with bisphosphonate molecules was synthesized and used to prepare in one step hybrid organic-inorganic polyoxometalate decorated gold nanoparticles. These new composites were shown to strongly inhibit P. aeruginosa and S. epidermidis biofilms growth, the…

Nanoscale Advances, 2019, 1 (9), pp.3400-3405. ⟨10.1039/c9na00401g⟩. ⟨hal-02335689⟩

• Article dans une revue

A new method for elaborating mesoporous SiO 2 /montmorillonite composite materials

Khalil Tesnime Abou, Chaabene Semy Ben, Boujday Souhir, Blanchard Juliette, Bergaoui Latifa

We report the sol–gel preparation of SiO 2 / montmorillonite composite materials and the investigation of the effect of the amount of clay and the TEOS concentration on the textural and structural properties of the composites. Pre-swelling of the clay with cetyltrimethyl ammonium results in solids…

Journal of Sol-Gel Science and Technology, 2015, ⟨10.1007/s10971-015-3716-2⟩. ⟨hal-01226875⟩

• Article dans une revue

Stability and degradation of PEO₂₀PPO₇₀PEO₂₀ triblock copolymers in mesostructured silica

Brindusa Dragoi, Guillaume Laurent, Sandra Casale, Taissire Benamor, Bénédicte Lebeau, Cédric Boissière, François Ribot, Mohamed Selmane, Patrick Schmidt, David Kreher, Anne Davidson

Organic−inorganic hybrid mesostructured silicas are prepared, without stirring (at pH = 0.0) and with stirring (at pH = 0.6) to obtain isolated and gyroidal-like attached silica grains with incorporated triblock P123 poly (ethylene oxide)-poly (propylene oxide)–poly (ethylene oxide) copolymers.…

• Article dans une revue

On the radical cracking of n-propylbenzene to ethylbenzene or toluene over Sn/Al2O3-Cl catalysts under reforming conditions

S Toppi, C Thomas, C Sayag, D Brodzki, Katia Fajerwerg, F Lepeltier, C Travers, G Djegamariadassou

Two series of chlorided-alumina-supported Sn catalysts were synthesized with different precursors, SnCl2 or SnBu4, and with various contents of Sn. The acidity of the catalysts including 0.2 wt% Sn was characterized by FTIR adsorption–desorption of 2,6-dimethylpyridine (Brønsted acidity) and…

Journal of Catalysis, 2005, 230 (2), pp.255-268. ⟨10.1016/j.jcat.2004.11.026⟩. ⟨hal-03663411⟩

• Article dans une revue

Contributions of photochemistry to bio-based antibacterial polymer materials

Davy-Louis Versace, Louise Breloy, Estelle Palierse, Thibaud Coradin

Surgical site infections constitute a major health concern that may be addressed by conferring antibacterial properties to surgical tools and medical devices via functional coatings. Bio-sourced polymers are particularly well-suited to prepare such coatings as they are usually safe and can exhibit…

Journal of materials chemistry‎ B, In press, ⟨10.1039/D1TB01801A⟩. ⟨hal-03450996⟩

• Article dans une revue

A Two-Step Spin Transition and Order–Disorder Phenomena in the Mononuclear Compound [Fe(Hpy-DAPP)](BF4)2

Galina Matouzenko, Dominique Luneau, Gábor Molnár, Nawell Ould-Moussa, Samir Zein, Serguei Borshch, Azzedine Bousseksou, Frederic Averseng

European Journal of Inorganic Chemistry, 2006, 2006 (13), pp.2671 - 2682. ⟨10.1002/ejic.200600068⟩. ⟨hal-01897100⟩

• Communication dans un congrès

Preparation of SiO2-supported Ni-Fe nanoparticles exhibiting a Fe gradient for the hydrogenation of sugars in water

Francois Robert, Achraf Sadier, Catherine Amiens, Karine Philippot, Robert Wojcieszak, E. Marceau

13th International Symposium on the Preparation of Heterogeneous Catalysts (PREPA13), Jul 2023, Louvain-la-Neuve, Belgium. ⟨hal-04523325⟩

• Communication dans un congrès

Silica-supported iron-nickel nanoparticles for the hydrogenation of xylose

Francois Robert, Pierre Lecante, V. Collière, Achraf Sadier, Robert Wojcieszak, Jean Sébastien Girardon, Valérie Briois, E. Marceau, Catherine Amiens, Karine Philippot

SCF'23, Jun 2023, Nantes, France. ⟨hal-04523384⟩