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  • Article dans une revue

Enzymatic Approach in Calcium Phosphate Biomineralization: A Contribution to Reconcile the Physicochemical with the Physiological View

Clément Guibert, Jessem Landoulsi

Biomineralization is the process by which organisms produce hard inorganic matter from soft tissues with outstanding control of mineral deposition in time and space. For this purpose, organisms deploy a sophisticated “toolkit” that has resulted in significant evolutionary innovations, for which…

International Journal of Molecular Sciences, 2021, 22 (23), pp.12957. ⟨10.3390/ijms222312957⟩. ⟨hal-03479544⟩

  • Article dans une revue

Simple Fabrication of ϵ‐Fe2O3 Nanoparticles Containing Silica Monoliths with Enhanced Coercivity

Laura Altenschmidt, Patricia Beaunier, Amélie Bordage, Eric Rivière, Giulia Fornasieri, Anne Bleuzen

Most of large-size permanent room-temperature hard magnets contain rare-earth elements. Here, we present the preparation of a large-size rare-earth free hard magnet based on the loading of the ordered mesoporosity of a preformed ordered mesoporous silica monolith obtained by a sol-gel route with…

ChemNanoMat, 2023, 9 (2), pp.e202200469. ⟨10.1002/cnma.202200469⟩. ⟨hal-04030789⟩

  • Article dans une revue

Combined ATR-FTIR and DFT Study of Cyclohexanone Adsorption on Hydrated TiO2 Anatase Surfaces

Ana Rita Almeida, Monica Calatayud, Frederik Tielens, Jacob A. Moulijn, Guido Mul

The adsorption of cyclohexanone on different planes ((100), (101), and (001)) of anatase TiO2, with variable level of hydration, was evaluated by density functional theory (DFT) calculations. Surface hydration was found to affect the cyclohexanone adsorption enthalpy and the calculated infrared…

Journal of Physical Chemistry C, 2011, 115, pp.14164. ⟨10.1021/jp1122129⟩. ⟨hal-00676618⟩

  • Thèse

Emergence de biopolymères de complexite contrôlée dans les scénarios d'origine de la vie, Emergence of biopolymers with controlled complexity in an origins of life scenario

Lise Bedoin

La matière vivante se caractérise par la présence de biopolymères non aléatoires dont la fonction biologique dépend de la séquence en monomères. Pour comprendre les origines de la vie, il est essentiel d’expliquer l’émergence de polymères non aléatoires dans un monde où les cellules vivantes n’…, Living matter is characterized by the presence of non-random biopolymers whose biological function depends on the monomer sequence. Thus, a major challenge for the elucidation of the Origins of Life lies in understanding how non-random polypeptides were formed and selected among all of the possible…

Polymères. Sorbonne Université, 2021. Français. ⟨NNT : 2021SORUS229⟩. ⟨tel-03475214⟩

  • Communication dans un congrès

Caracterización in-operando de catalizadores Fe-N-C para la reducción del H2O2 mediante microscopía electroquímica de barrido

Carlos M Sánchez-Sánchez, Christian Candia-Onfray, Ricardo Venegas, Lin Zhang, Sophie Juillard, Ricardo Salazar, José F. Marco, Nieves Menendez, Francisco Javier Recio, Vincent Vivier

Se han desarrollado diferentes rutas sintéticas para obtener catalizadores pirolizados Fe-N-C muy activos para la reacción de reducción de oxígeno (ORR). En particular, presentamos aquí las bases nitrogenadas del ADN y el ARN como precursores de C-N [1]. El H2O2 formado como subproducto durante la…

XLII reunion del Grupo Especializado de Electoquimica de la RSEQ (42 GERSEQ 2022), Jul 2022, Santander, España. ⟨hal-03988309⟩

  • Article dans une revue

Electrochemistry of a new carbon-rich fluorine-doped tin oxide (CFTO) material as a powder electrode in chloride electrolytes

Chantal Cachet, Hubert Cachet, B Jousseaume, T Toupance, Vincent Vivier

The electrochemical behavior of a conductive carbon-rich fluorine-doped tin oxide (CFTO) powder synthesized via the sol–gel process was investigated by studying the chloride oxidation reaction in aqueous media with the help of a cavity microelectrode (CME) without any binding additive. This new…

Electrochimica Acta, 2002, 47 (9), pp.1385-1394. ⟨10.1016/S0013-4686(01)00873-8⟩. ⟨hal-04228572⟩

  • Article dans une revue

The Impact of Reduction Temperature and Nanoparticles Size on the Catalytic Activity of Cobalt-Containing BEA Zeolite in Fischer–Tropsch Synthesis

Karolina A Chalupka, Jacek Grams, Pawel Mierczynski, Malgorzata I Szynkowska, Jacek Rynkowski, Thomas Onfroy, Sandra Casale, Stanislaw Dzwigaj

A goal of this work was to investigate the influence of the preparation procedure and activation conditions (reduction temperature and reducing medium: pure hydrogen (100% H 2) or hydrogen-argon mixture (5% H 2-95% Ar)) on the activity of Co-containing BEA zeolites in Fischer-Tropsch synthesis.…

Catalysts, 2020, 10 (5), pp.553. ⟨10.3390/catal10050553⟩. ⟨hal-03987087⟩

  • Article dans une revue

Tunable hierarchical porous silica materials using hydrothermal sedimentation-aggregation technique

Abdelali Zaki, Jing Xu, Grégory Stoclet, Sandra Casale, Jean-Philippe Dacquin, Pascal Granger

Herein, a simple and efficient synthesis based on a dual templating approach allow the preparation of tunable macroporous mesoporous silica materials. Macropores incorporation has been obtained using polymer spheres of well-defined size and their subsequent removal by thermal treatment allowed the…

Microporous and Mesoporous Materials, 2015, Microporous and Mesoporous Materials, 208, pp.140-151. ⟨10.1016/j.micromeso.2015.01.041⟩. ⟨hal-03033078⟩

  • Article dans une revue

How to determine IR molar absorption coefficients of co-adsorbed species? Application to methanol adsorption for quantification of MgO basic sites

Béatrice Moulin, Laetitia Oliviero, Philippe Bazin, Marco Daturi, Guylène Costentin, Françoise Maugé

Methanol adsorption on MgO samples with different morphologies is studied by infrared (IR) spectroscopy coupled to volumetry or thermogravimetry measurements to probe qualitatively and quantitatively the acid-base paired sites. The molar absorption coefficients of [small nu](OC) vibration of non-…

Physical Chemistry Chemical Physics, 2011, 13 (22), pp.10797-10807. ⟨10.1039/C0CP02767G⟩. ⟨hal-00639308⟩

  • Article dans une revue

Polyethylene glycol Gold-Nanoparticles: Facile Nanostructuration of Doxorubicin and its complex with DNA molecules for SERS detection

Jolanda Spadavecchia, Ramesh Perumal, Sandra Casale, Jean-Marc Krafft, Christophe Methivier, Claire-Marie Pradier

We report the synthesis of dicarboxylic acid-terminated polyethylene-glycol (PEG)-gold nanoparticles by a simple one-step method, and their further use to form nanostructured surfaces for biomolecule immobilization. The synthesized nano-scale particles were conjugated with probe/target…

Chemical Physics Letters, 2016, 648, pp.182-188. ⟨10.1016/j.cplett.2015.08.038⟩. ⟨hal-01196383⟩