• Article dans une revue

Ultra-Compact Electrical Double Layers at TiO₂ (110) Electrified Interfaces

Immad Nadeem, Christopher Penschke, Ji Chen, Xavier Torrelles, Axel Wilson, Hadeel Hussain, Gregory Cabailh, Oier Bikondoa, Jameel Imran, Christopher Nicklin, Robert Lindsay, Jörg Zegenhagen, Matthew Blunt, Angelos Michaelides, Geoff Thornton

Metal-oxide aqueous interfaces are important in areas as varied as photocatalysis and mineral reforming. Crucial to the chemistry at these interfaces is the structure of the electrical double layer formed when anions or cations compensate for the charge arising from adsorbed H<sup>+</sup…

• Pré-publication, Document de travail

Electron conductive self-assembled hybrid low-molecular weight glycolipid-nanosilver gels

Korin Gasia Ozkaya, Othmane Darouich, Hynd Remita, Isabelle Lampre, Lionel Porcar, Alain Carvalho, M. Schmutz, Sandra Casale, Christel Laberty-Robert, Niki Baccile

Low-molecular weight (LMW) hydrogels are gaining interest over macromolecular gels due to their reversible, dynamic and stimuli-responsive nature. They are potentially interesting functional materials for advanced applications such as catalysis, nanoelectronics or regenerative medicine. One common…

2025. ⟨hal-05028948v2⟩

• Article dans une revue

An EPR characterisation of stable and transient reactive oxygen species formed under radiative and non-radiative conditions

E. Richards, D. M Murphy, M. Che

Electron paramagnetic resonance (EPR) spectroscopy is the ideal method of choice when detecting and studying the wide variety of paramagnetic oxygen-centred radicals. For simple diatomic radicals, such as the superoxide (O 2 −) or peroxy (ROO •) species, the CW EPR profile (in particular the g-…

Research on Chemical Intermediates, 2019, 45 (12), pp.5763-5779. ⟨10.1007/s11164-019-04001-0⟩. ⟨hal-02355558⟩

• Article dans une revue

Permanently hydrophilic, piezoelectric PVDF nanofibrous scaffolds promoting unaided electromechanical stimulation on osteoblasts

Maria Kitsara, Andreu Blanquer, Gonzalo Murillo, Vincent Humblot, Sara de Bragança Vieira, Carme Nogués, Elena Ibáñez, Jaume Esteve, Leonardo Barrios

Biomimetic functional scaffolds for tissue engineering should fulfil specific requirements concerning structural, biochemical and electro-mechanical characteristics, depending on the tissue that they are designed to resemble. In bone tissue engineering, piezoelectric materials based on poly(…

Nanoscale, 2019, 11 (18), pp.8906-8917. ⟨10.1039/C8NR10384D⟩. ⟨hal-02351810⟩

• Article dans une revue

Ni/CeO2 Nanoparticles Promoted by Yttrium Doping as Catalysts for CO2 Methanation

Valeria La Parola, Chao Sun, Patricia Beaunier, Leonarda F Liotta, Patrick da Costa

Ni (5 wt.%) catalysts over yttrium modified CeO2 oxides synthesized by hydrothermal method were prepared. For comparison Ni was supported over pure CeO2 and Y2O3. Characterizations by N2 adsorption/desorption, XRD, XPS, TEM/HRTEM, H2-TPR, CO2-TPD and TGA were carried out. The catalytic performance…

ACS Applied Nano Materials, 2020, 3 (12), pp.12355-12368. ⟨10.1021/acsanm.0c02841⟩. ⟨hal-03146777⟩

• Article dans une revue

Heterogeneous catalytic partial oxidation of lower alkanes (C 1 –C 6 ) on mixed metal oxides

Jacques Védrine

This review paper aims at analysing the state of the art for partial oxidation and oxidative dehydrogenation (ODH) reactions of lower alkanes C1–C6 into olefins and oxygenated products (aldehydes, anhydrides, carboxylic acids) on metal oxide catalysts with cations of variable oxidation state, such…

Journal of Energy Chemistry, 2016, 25 (6), pp.936-946. ⟨10.1016/j.jechem.2016.10.007⟩. ⟨hal-02188605⟩

• Article dans une revue

Optimization of Synthesis Conditions of Ni/SBA-15 Catalysts: Confined Nanoparticles and Improved Stability in Dry Reforming of Methane

Nissrine El Hassan, Marie-Nour Kaydouh, Nissrine El, Anne Davidson, Pascale Massiani

Despite its economic and environmental advantages, the dry reforming of methane using supported Ni-based catalysts remains challenging due to problems of metal particle sintering and carbon deposition, which lead to loss in catalytic activity. In this study, different silica supports, containing 5…

Catalysts, 2020, 11 (1), pp.44. ⟨10.3390/catal11010044⟩. ⟨hal-03146326⟩

• Article dans une revue

Molecular Understanding of the Bulk Composition of Crystalline Nonstoichiometric Hydroxyapatites: Application to the Rationalization of Structure-Reactivity Relationships

Manel Ben Osman, Jean Marc Krafft, Yannick Millot, Frederic Averseng, Tetsuya Yoshioka, Jun Kubo, Guylène Costentin

Crystalline hydroxyapatite samples (HAps) have been prepared by using the co-precipitation method under various pH conditions, leading to nonstoichiometric solids (1.65 < Ca/P < 1.77). The aim of this study was to rationalize the sensitivity of the catalytic activity of HAps to their bulk…

European Journal of Inorganic Chemistry, 2016, 2016 (17), pp.2709 - 2720. ⟨10.1002/ejic.201600244⟩. ⟨hal-01378491⟩

• Article dans une revue

Supported gold catalysts for the decomposition of VOC: Total oxidation of propene in low concentration as model reaction

Laurent Delannoy, Katia Fajerwerg, Pandian Lakshmanan, Claude Potvin, Christophe Methivier, Catherine Louis

Supported gold catalysts prepared by deposition-precipitation with urea were studied in the reaction of oxidation of propene in low concentration in a large excess of oxygen, so as to mimic the conditions of catalytic decomposition of a volatile organic compound of hydrocarbon-type (1200 ppm C3H6,…

Applied Catalysis B: Environmental, 2010, 94 (1-2), pp.117-124. ⟨hal-00604712⟩

• Article dans une revue

Detailed kinetic modeling study of NOx oxidation and storage and their interactions over Pt/Ba/Al2O3 monolith catalysts

Nikola Rankovic, Andre Nicolle, Patrick da Costa

The concept of nitrogen oxide storage-redn. (NSR) is a promising aftertreatment technol. for reducing NOx emissions from lean-burn engine exhaust. The present work focuses on the first two steps of the overall NSR mechanism, namely, NO to NO2 oxidn. and NOx storage. The governing storage mechanisms…

Journal of Physical Chemistry C, 2010, 114 (15), pp.7102-7111. ⟨10.1021/jp100192u⟩. ⟨hal-00604794⟩