Laboratoire de réactivité de surface

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  • Article dans une revue

LRS-1, a new delaminated phyllosilicate material with high acidity », Chem. Mater., 18(1), 34-40 (2006).

Bachar Zebib, Jean-François Lambert, Juliette Blanchard, Michèle Breysse

Well-crystallized samples of the phyllosilicate magadiite have been synthesized in their sodic form, both purely silicic and with an Al/Si ratio of 30. They have been delaminated by a procedure consisting of CTMA+ swelling in the presence of TPAOH, sonication, and calcination at 700°C to remove the…

Chemistry of Materials, 2006, 18 (1), pp.34-40. ⟨hal-00022068⟩

  • Article dans une revue

Special Issue “Selected Papers from the 5nd Edition of Global Conference on Catalysis, Chemical Engineering and Technology (CAT 2019)”

Stanislaw Dzwigaj, Arthur Nozik

The present Special Issue concerns the papers which have been presented at the fifth edition of the Global Conference on Catalysis, Chemical Engineering & Technology (CAT 2019) that promote linkage of the catalytic science, engineering and technology [...]

Catalysts, 2021, 11 (1), pp.65. ⟨10.3390/catal11010065⟩. ⟨hal-03995332⟩

  • Article dans une revue

Unlocking synergy in bimetallic catalysts by core–shell design

Jessi van der Hoeven, Jelena Jelic, Liselotte Olthof, Giorgio Totarella, Relinde van Dijk-Moes, Jean-Marc Krafft, Catherine Louis, Felix Studt, Alfons van Blaaderen, Petra de Jongh

Extending the toolbox from mono- to bimetallic catalysts is key in realizing efficient chemical processes1. Traditionally, the performance of bimetallic catalysts featuring one active and one selective metal is optimized by varying the metal composition1,2,3, often resulting in a compromise between…

Nature Materials, 2021, 20 (9), pp.1216-1220. ⟨10.1038/s41563-021-00996-3⟩. ⟨hal-03995585⟩

  • Article dans une revue

PdAg alloy nanoparticles encapsulated in N-doped microporous hollow carbon spheres for hydrogenation of CO2 to formate

Guoxiang Yang, Yasutaka Kuwahara, Kohsuke Mori, Catherine Louis, Hiromi Yamashita

Here, we report a general synthesis approach to produce PdAg nanoparticles (NPs) that are dispersed uniformly within N-doped microporous hollow carbon spheres (NMHCS) for hydrogenation of CO2 to formate. The optimized PdAg@NMHCS catalyst, which was obtained by using an optimized amount of…

Applied Catalysis B: Environmental, 2021, 283, pp.119628. ⟨10.1016/j.apcatb.2020.119628⟩. ⟨hal-03995568⟩

  • Article dans une revue

Acidic Properties of Alkaline-Earth Phosphates Determined by an Experimental-Theoretical Approach

E. Blanco, Q. Gu, J. Couble, L. Martin, T. Onfroy, G. Costentin, Jean-Francois Paul, Carine Michel, S. Loridant

Alkaline-earth phosphates efficient in the dehydration of lactic acid to acrylic acid were previously shown to contain a surface mono/dihydrogen phosphate amorphous layer composed of M2+ cations and both P═O and POH groups. In this work, acidic properties of such a layer were determined combining…

Journal of Physical Chemistry C, 2020, 124 (3), pp.2013-2023. ⟨10.1021/acs.jpcc.9b10472⟩. ⟨hal-02472130⟩

  • Article dans une revue

The controlled synthesis of metal-acid bifunctional catalysts: The effect of metal:acid ratio and metal-acid proximity in Pt silica-alumina catalysts for n-heptane isomerization

Jadid E Samad, Juliette R Blanchard, Celine R Sayag, Catherine R Louis, John R Regalbuto

Several series of metal-acid bifunctional catalysts with controlled metal:acid ratios and metal site-acid site proximity were evaluated for n-heptane isomerization. Through the study of metal deposition reported in the companion paper, proximity could be achieved at four distinct scales: atomic,…

Chinese Journal of Catalysis, 2016, 342, pp.203 - 212. ⟨10.1016/j.jcat.2016.08.004⟩. ⟨hal-01443956⟩

  • Article dans une revue

Synthesis and characterization of Ag-Protoporphyrin nano structures using mixed co-polymer method

Ramesh Perumal, Sandra Casale, Luca de Stefano, Jolanda Spadavecchia

In this paper, we report the synthesis of hybrid silver nanostructures (AgNPs) based on an effective mixing of polyols with Polyvinylpyrrolidone (PVP) and Porphyrin molecules, in particular Protoporphyrin IX (PP). The combination of PVP and PP, which act as co-directing agents and favour the…

Frontiers in Laboratory Medicine, 2017, ⟨10.1016/j.flm.2017.05.002⟩. ⟨hal-01526696⟩

  • Thèse

Gold surface nanostructuring for separation and sensing of biomolecules, Nanostructuration des surfaces d'or pour la séparation et la détection de biomolécules

Erin Bedford

Detecting biomolecules in physiological environments is critical to health care and environmental monitoring. In this work, we study and use gold surfaces for biomolecule detection while incorporating nanoscale components—specifically, self-assembled monolayers (SAMs) of alkanethiols and gold…, La détection de molécules biologiques dans les environnements physiologiques est essentielle aux soins de santé et la surveillance de l'environnement. Dans ces travaux de thèse, nous étudions et utilisons des surfaces d'or pour la détection de biomolécules, avec l'inclusion de…

Chemical Physics [physics.chem-ph]. Université Pierre et Marie Curie - Paris VI; University of Waterloo (Canada), 2016. English. ⟨NNT : 2016PA066527⟩. ⟨tel-01529577⟩

  • Article dans une revue

A comparative study of alanine adsorption and condensation to peptides in two clay minerals

Fabrícia de Castro Silva, Luciano Clécio Brandão Lima, Edson Silva-Filho, Maria Gardennia Fonseca, Jean-François Lambert, Maguy Jaber

The polycondensation of amino acids to oligopeptides is an important step in the origins of life, and known to be effective on several mineral surfaces. The data available on clay mineral surfaces are heterogeneous and sometimes contradictory, however. The objective of the present work is to…

Applied Clay Science, 2020, 192, pp.105617. ⟨10.1016/j.clay.2020.105617⟩. ⟨hal-02887409⟩

  • Article dans une revue

Covalent Grafting of Organic–Inorganic Polyoxometalates Hybrids onto Mesoporous SBA-15: A Key Step for New Anchored Homogeneous Catalysts

Richard Villanneau, Asma Marzouk, Yan Wang, Aicha Ben Djamaa, Guillaume Laugel, Anna Proust, Franck Launay

Covalent grafting of the polyoxometalate (POM) hybrid [AsW9O33{P(O)(CH2CH2CO2H)}2]5- on mesoporous NH2-functionalized SBA-15 is the first example of anchored vacant POMs in which nucleophilic oxygen atoms are still available after incorporation into the supports. Such systems are interesting…

Inorganic Chemistry, 2013, 52 (6), pp.2958 - 2965. ⟨10.1021/ic302374v⟩. ⟨hal-01563887⟩