Laboratoire de réactivité de surface

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  • Communication dans un congrès

In situ XAFS study of the thioresistance of metallic Ru supported on HYd zeolite

Juliette Blanchard, K. Kyoko Bando, Christophe Geantet, Takashi Matsui, Michèle Breysse, Yuji Yoshimura

In situ XAFS at the Ru K edge was used to investigate the reduction of Ru(NH3)63+ supported on HYd zeolite, and the evolution of the reduced sample in the presence of sulfur (350 ppm and 2%H2S/H2) at 523K. After reduction at 673K very small Ru° nanoparticules are formed which interact strongly with…

TOCAT5, Jul 2006, Tokyo, Japan. ⟨hal-00112012⟩

  • Article dans une revue

Ruthenium sulfide clusters in acidic zeolites: in situ XAS characterization during sulfidation and reaction

Juliette Blanchard, Kyoko K. Bando, Takashi Matsui, Masaru Harada, Michèle Breysse, Yuji Yoshimura

In situ XAS at the Ru K edge was used to study the reductive sulfidation (15% H2S/H2) of Ru(NH3)63+ supported on HYd zeolite, and the evolution of the sulfided sample under working conditions (lower H2S partial pressure, addition of toluene to the feed). Sulfidation starts at room temperature and…

Applied Catalysis A : General, 2007, XX, pp.XX. ⟨hal-00112011⟩

  • Article dans une revue

Synthesis and characterization of Cr-ZSM-5 composite in fluoride medium and its performance in oxidation reaction of 2-mercaptobenzotiazole

Benchikh Imen, Djafri Fatiha, Djafri Ayada, Tabti Affaf, Franck Launay

Purpose The purpose of this paper is to synthesize Cr-ZSM-5 using hydrothermal synthesis in acidic fluoride medium and the investigation of its catalytic performance in heterogeneous oxidation of 2-mercaptobenzothiazole in the presence of H 2 O 2 . Design/methodology/approach The framework was…

International Journal of Clothing Science and Technology, 2017, 29 (4), pp.483-490. ⟨10.1108/IJCST-08-2016-0095⟩. ⟨hal-04015840⟩

  • Article dans une revue

Rh-Ni/SBA-15 prepared by two solvents method as stable catalysts for the dry reforming of methane at high pressure

M.N. Kaydouh, El Hassan N., Elzakhem H., Anne Davidson, Sandra Casale, Pascale Massiani

The effect of Rh addition on the catalytic performance of Ni/SBA-15 catalysts was studied in the dry reforming of methane. The SBA-15 silica support was synthesized in large quantities and the metals were deposited using the two solvents impregnation method. The properties of the calcined, reduced…

Rh-Ni/SBA-15 prepared by two solvents method as stable catalysts for the dry reforming of methane at high pressure . IEEE Transactions on NanoBioscience, 2015, pp.1-4. ⟨10.1109/MedGO.2015.7330335⟩. ⟨hal-01264106⟩

  • Article dans une revue

Non-destructive investigation of fibronectin adsorption on titanium surfaces using PM-RAIRS: effect of surface hydroxylation

Stéphanie Boudesocque, Olivier Dargaud, Lorenzo Stievano, Christophe Méthivier, Jean-Francois Lambert, T. Coradin, Claire-Marie Pradier

Polarisation-modulation reflection-absorption infrared spectroscopy (PM-RAIRS) is a useful non-destructive technique to study semi-quantitatively the adsorption of proteins on metal surfaces. In this work, we employed PM-RAIRS to study the effect of the degree of hydroxylation of the surface of…

Surface and Interface Analysis, 2010, 42 (6-7), pp.466-470. ⟨10.1002/sia.3295⟩. ⟨hal-00558207⟩

  • Article dans une revue

Self-Regulating VO2 Photonic Pigments

Maria Letizia de Marco, Olivier Smith, Fanny Thorimbert, Cédric Boissière, Lionel Nicole, Jean-Marc Krafft, Clement Sanchez, Marco Faustini

Nanostructured photonic pigments exhibiting structural colors hold promises to replace conventional pigments for several applications. One emerging challenge in the field consists in integrating additional functionalities to the pigments beyond colors. For instance, integrating phase changing…

Chemistry of Materials, 2023, 35 (17), pp.7164-7174. ⟨10.1021/acs.chemmater.3c01436⟩. ⟨hal-04274274⟩

  • Article dans une revue

Maghemite nanoparticles and maghemite/silica nanocomposite microspheres as magnetic Fenton catalysts for the removal of water pollutants

Nassira Ferroudj, Jimmy Nzimoto, Anne Davidson, Delphine Talbot, Emmanuel Briot, Vincent Dupuis, Agnès Bée, Mohamed Salah Medjram, Sébastien Abramson

Maghemite nanoparticles (-Fe 2 O 3 NP) and maghemite/silica nanocomposite microspheres (-Fe 2 O 3 /SiO 2 MS) have been evaluated as magnetic heterogeneous Fenton catalysts. The catalysts were fully characterized by electronic microscopies, magnetometry, XRD, UV–vis–NIR spectroscopy, and sorption…

Applied Catalysis B: Environmental, 2013, 136-137, pp.9-18. ⟨10.1016/j.apcatb.2013.01.046⟩. ⟨hal-01525868⟩

  • Article dans une revue

Site-specific grafting on titanium surfaces with hybrid temporin antibacterial peptides

Nicolas Masurier, Jean-Baptiste Tissot, Douae Boukhriss, Said Jebors, Coline Pinese, Pascal Verdié, Muriel Amblard, Ahmad Mehdi, Jean Martinez, Vincent Humblot, Gilles Subra

Relying on a membrane-disturbing mechanism of action and not on any intracellular target, antimicrobial peptides (AMP) are attractive compounds to be grafted on the surface of implantable materials such as silicone catheters or titanium surgical implants. AMP sequences often display numerous…

Journal of materials chemistry‎ B, 2018, 6 (12), pp.1782 - 1790. ⟨10.1039/c8tb00051d⟩. ⟨hal-01742222⟩

  • Article dans une revue

Phenylamine-functionalized mesoporous silica supported PdAg nanoparticles: a dual heterogeneous catalyst for formic acid/CO 2 -mediated chemical hydrogen delivery/storage

Kohsuke Mori, Shinya Masuda, Hiromasa Tanaka, Kazunari Yoshizawa, Michel Che, Hiromi Yamashita

PdAg nanoparticles supported on phenylamine-grafted mesoporous silica acted as a dual heterogeneous catalyst for the interconversion of H 2 and CO 2 .

Chemical Communications, 2017, 53 (34), pp.4677-4680. ⟨10.1039/C7CC00864C⟩. ⟨hal-04015748⟩

  • Article dans une revue

Lipase-embedded Silica Nanoparticles with Oil-filled Core-Shell Structure: Stable and Recyclable Platforms for Biocatalysts

Yasutaka Kuwahara, Takato Yamanishi, Takashi Kamegawa, Kohsuke Mori, Michel Che, Hiromi Yamashita

Lipase enzyme was embedded within silica nanoparticles with oil-filled core-shell structure. The enzyme embedded within such architecture retained all of its activity and showed high catalytic performance both in water and in organic media with optimal stability and recyclability.

Chemical Communications, 2012, 48, pp.2882-4. ⟨10.1039/c2cc17896f⟩. ⟨hal-00744697⟩