Laboratoire de réactivité de surface

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  • Article dans une revue

Complementarity of Density Functional Theory and Nuclear Magnetic Resonance Tools To Probe the Nano-Layered Silicates Surface Chemistry and Morphology

Mathilde Poirier, Yannick Millot, Elisa Silva Gomes, Maguy Jaber, Virginie Herledan, Guillaume Laugel, Pierre Micoud, François Martin, Hélène Lauron-Pernot, Hervé Toulhoat

By combining experimental, spectroscopic, structural, and physical characterizations and extensive density functional theory simulations, unprecedented insight is gained on the local surface properties of synthetic talc nanoparticles, their structure, morphology and particle size distribution.…

Journal of Physical Chemistry C, 2020, 124 (1), pp.267-286. ⟨10.1021/acs.jpcc.9b05903⟩. ⟨hal-02457727⟩

  • Article dans une revue

Potential Role of Inorganic Confined Environments in Prebiotic Phosphorylation

Avinash Vicholous Dass, Maguy Jaber, André Brack, Frédéric Foucher, Terence P Kee, Thomas Georgelin, Frances Westall

A concise outlook on the potential role of confinement in phosphorylation and phosphate condensation pertaining to prebiotic chemistry is presented. Inorganic confinement is a relatively uncharted domain in studies concerning prebiotic chemistry, and even more so in terms of experimentation.…

Life, 2018, 8 (1), pp.7. ⟨10.3390/life8010007⟩. ⟨hal-01733453⟩

  • Article dans une revue

Identification of a Ubiquinone-Ubiquinol Quinhydrone Complex in Bacterial Photosynthetic Membranes and Isolated Reaction Centers by Time-Resolved Infrared Spectroscopy

Alberto Mezzetti, Jean-Francois Paul, Winfried Leibl

Ubiquinone redox chemistry is of fundamental importance in biochemistry, notably in bioenergetics. The bi-electronic reduction of ubiquinone to ubiquinol has been widely studied, including by Fourier transform infrared (FTIR) difference spectroscopy, in several systems. In this paper, we have…

International Journal of Molecular Sciences, 2023, International Journal of Molecular Sciences, 24 (6), pp.5233. ⟨10.3390/ijms24065233⟩. ⟨hal-04133205⟩

  • Thèse

Interaction between Orange Carotenoid Protein and mesoporous silica : from spectroscopic investigations to photoactive nanodevices, Interaction entre la Orange Carotenoid Protein et la silice mésoporeuse : des investigations spectroscopiques aux nanodispositifs photo-actifs

Silvia Leccese

This thesis deals with the study of interactions between the Orange Carotenoid Protein and mesoporous silica SBA-15, aiming to the development of photoactive nano-devices. The photoactive Orange Carotenoid Protein (OCP) is a protein involved in photo-protective responses in cyanobacteria. It…, Ce projet de thèse concerne l’étude des interactions entre la Orange Carotenoid Protein (OCP) et la silice mésoporeuse SBA-15, visant à la mise au point de nanodispositifs photo-actifs. La OCP est une protéine photo-active impliquée dans la photoprotection des cyanobactéries. Il implique la…

Material chemistry. Sorbonne Université, 2022. English. ⟨NNT : 2022SORUS537⟩. ⟨tel-04132906⟩

  • Article dans une revue

Oxidation of gold metal particles supported on TiO2: an FTIR study by means of low-temperature CO adsorption

Hr. Klimev, Katia Fajerwerg, K. Chakarova, L. Delannoy, C. Louis, K. Hadjiivanov

Two Au/TiO2 samples with different gold loadings (0.7 and 4.0 wt.% Au) were prepared by deposition-precipitation with urea and calcined at 673 K. TEM revealed gold particles of 3.2 and 3.9 nm for the 0.7 and 4.0 wt.% samples, respectively. The samples were subjected to different red-ox treatments…

Journal of Materials Science, 2007, 42 (10), pp.3299-3306. ⟨10.1007/s10853-006-0777-1⟩. ⟨hal-03663974⟩

  • Article dans une revue

Platinum-zeolite hybrid catalyst for the electrooxidation of formic acid

Lu Zhang, Juan V Perales-Rondón, Angélica Thomère, Juliette Blanchard, Carlos M Sánchez-Sánchez

Formic acid oxidation reaction (FAOR) was studied using different platinum-zeolites hybrid catalysts. The catalysts were prepared by addition of two different forms of the ZSM-5 zeolite (ZSM-5-H+ and ZSM-5-NH4+) to an ink containing Vulcan carbon support and Pt nanoparticles (NPs). TEM images…

Journal of Electroanalytical Chemistry, 2021, 896, pp.115491. ⟨10.1016/j.jelechem.2021.115491⟩. ⟨hal-03274842v2⟩

  • Article dans une revue

Unusual behaviour of Au/ZnO catalysts in selective hydrogenation of butadiene due to the formation of a AuZn nanoalloy

Salim Derrouiche, Camille La Fontaine, Gode Thrimurtulu, Sandra Casale, Laurent Delannoy, Hélène Lauron-Pernot, Catherine Louis

The reaction of selective hydrogenation of butadiene performed in an excess of propene, which has been extensively studied over gold supported on different oxides and exhibited high selectivity to butenes, has been applied to the case of gold (1 wt%) supported on zinc oxide (8 m2 g−1), a strongly…

Catalysis Science & Technology, 2016, 6, pp.6794-6805 ⟨10.1039/C5CY01664A⟩. ⟨hal-01265858⟩

  • Thèse

Biominéralisation intracellulaire par des cyanobactéries : du modèle aux cellules, Intracellular biomineralization by cyanobacteria : from model to cells

Nithavong Cam

Cette thèse vise à avancer dans la compréhension de la formation récemment découverte de carbonates amorphes intracellulaires par des cyanobactéries. Des synthèses abiotiques ont permis de produire des carbonates similaires aux inclusions intracellulaires en termes de morphologie, structure et…, In this thesis we study the recently discovered formation of intracellular amorphous carbonates by cyanobacteria. Abiotic syntheses produced carbonates with a morphology, structure and composition similar as intracellular inclusions. The intracellular chemical conditions in the cyanobacteria can be…

Chimie-Physique [physics.chem-ph]. Université Pierre et Marie Curie - Paris VI, 2015. Français. ⟨NNT : 2015PA066495⟩. ⟨tel-01299797⟩

  • Thèse

Transformations de l'isopropanol sur solides aluminiques : une approche mixte expérimentale / modélisation multi-échelle, Conversion of isopropanol on aluminic materials : a mixed experimental and multi-scale modeling approach

Kim Larmier

La valorisation de la biomasse lignocellulosique en molécules plateforme pour l'industrie chimique rend nécessaire l'adaptation des méthodes de raffinage à la transformation de composés organiques oxygénés. La déshydratation des alcools connaît dans ce contexte un fort regain d'…, The upgrading of lignocellulosic biomass into strategic molecules for the chemical industry requires the adaptation of refining procedures to the transformation of oxygenated species. In this context, the dehydration of alcohols has seen renewed interest over the last decade. The work presented…

Chimie-Physique [physics.chem-ph]. Université Pierre et Marie Curie - Paris VI, 2015. Français. ⟨NNT : 2015PA066396⟩. ⟨tel-01282594⟩

  • Article dans une revue

Covalent Transition Metal Borosilicides: Reaction Pathways in Molten Salts for Water Oxidation Electrocatalysis

Daniel Janisch, Fernando Igoa Saldaña, Edouard de Rolland Dalon, Carlos V. M. Inocêncio, Yang Song, Pierre-Olivier Autran, Antoine Miche, Sandra Casale, David Portehault

The properties of transition metal borides and silicides are intimately linked to the covalent character of the chemical bonds within their crystal structures. Bringing boron and silicon together within metal borosilicides can then engender different competing covalent networks and complex charge…

Journal of the American Chemical Society, 2024, 146 (31), pp.21824-21836. ⟨10.1021/jacs.4c06074⟩. ⟨hal-04754464⟩