Laboratoire de réactivité de surface

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  • Article dans une revue

Engineering of Antimicrobial Surfaces by Using Temporin Analogs to Tune the Biocidal/antiadhesive Effect

Pierre-Carl Oger, Christophe Piesse, Ali Ladram, Vincent Humblot

Proliferation of resistant bacteria on biomaterials is a major problem leading to nosocomial infections. Due to their broad-spectrum activity and their ability to disrupt bacterial membranes through a rapid membranolytic mechanism, antimicrobial peptides (AMPs) are less susceptible to the…

Molecules, 2019, 24 (4), pp.814. ⟨10.3390/molecules24040814⟩. ⟨hal-02052750⟩

  • Article dans une revue

True Circular Dichroism in Optically Active Achiral Metasurfaces and Its Relation to Chiral Near-Fields

Mathieu Nicolas, Per Magnus Walmsness, Jayeeta Amboli, Lu Zhang, Guillaume Demesy, Nicolas Bonod, Souhir Boujday, Morten Kildemo, Bruno Gallas

Optically active achiral metasurfaces offer a promising way to detect chiral molecules based on chiroptic methods. The combination of plasmonic enhanced circular dichroism and reversible optical activity would boost the sensitivity and provide enantiomerselective surfaces while using a single…

ACS Applied Optical Materials, 2023, ⟨10.1021/acsaom.3c00136⟩. ⟨hal-04183908⟩

  • Article dans une revue

Characterisation and Reactivity of Oxygen Species at the Surface of Metal Oxides

M. Anpo, Guylène Costentin, E. Giamello, H. Lauron-Pernot, Z. Sojka

Surface reactive oxygen species play a fundamental role in selective oxidation and combustion reactions catalyzed by metal oxides. Unravelling the nature of these transient species, and understanding the details of both their electronic structure and reactivity has been for decades one of the prime…

Journal of Catalysis, 2021, 393, pp.259-280. ⟨10.1016/j.jcat.2020.10.011⟩. ⟨hal-03223789⟩

  • Article dans une revue

Electrochemical deposition of ZnO thin films in aprotic ionic liquids: Effect of the cationic alkyl-chain-length

Rita Khalil, Mirella Azar, Ibrahim Bou Malham, Mireille Turmine, Vincent Vivier

Zinc oxide (ZnO) is a semiconductor with various physicochemical properties allowing its use in a wide range of technological applications. The aim of this work is to study nanocrystalline ZnO thin-film deposited using zinc salt which is dissolved in pure ionic liquids (ILs). The latter play a dual…

Journal of Ionic Liquids, 2022, 2 (1), pp.100031. ⟨10.1016/j.jil.2022.100031⟩. ⟨hal-03664909⟩

  • Article dans une revue

Catalytic behavior of copper–amine complex supported on mesoporous silica SBA-15 toward mono-Aza-Michael addition: role of amine groups

Aboubakr Hakiki, Riad Mustpha Kerbadou, Bouhadjar Boukoussa, Hadjira Habib Zahmani, Franck Launay, Alain Pailleret, Françoise Pillier, Salih Hacini, Abdelkader Bengueddach, Rachida Hamacha

This work concerns the preparation and modification of mesoporous silica SBA-15 with different amine-copper complexes in order to study their impact on the catalytic behavior via Aza Michael addition. Firstly, SBA-15 was prepared hydrothermally, then functionalized by mono-, di- and tri-amine, and…

Journal of Inorganic and Organometallic Polymers and Materials, 2019, 29 (5), pp.1773-1784. ⟨10.1007/s10904-019-01139-7⟩. ⟨hal-02280716⟩

  • Article dans une revue

The Acidity of Zeolites: Concepts, Measurements and Relation to Catalysis: A Review on Experimental and Theoretical Methods for the Study of Zeolite Acidity

E.G. Derouane, Jacques C. Vedrine, Ramos R. Pinto, P.M. Borges, L. Costa, M. A. N. D. A. Lemos, F. Lemos, Ramôa Ribeiro

In this article, we considered all aspects of acidity (nature of acid sites, strength, density, etc.) in solid catalysts and in zeolites in particular. After reminding the definition of acidity in liquid and solid acids, we emphasized acidity characterization by the most used physical techniques,…

Catalysis Reviews: Science and Engineering, 2013, 4, pp.454-515(62). ⟨10.1080/01614940.2013.822266⟩. ⟨hal-00914604⟩

  • Article dans une revue

Fully controlled precipitation of photomagnetic CoFe Prussian blue analogue nanoparticles within the ordered mesoporosity of silica monoliths

Giulia Fornasieri, Merwen Aouadi, Pierrick Durand, Patricia Beaunier, Eric Rivière, Anne Bleuzen

The porosity of ordered mesoporous silica monoliths has been successfully used as nanoreactor for the elaboration of CoFe Prussian blue analogue nanoparticles. The nanocomposite exhibits a reversible photomagnetic effect different from that of typical powdered compounds due to particle size…

Chemical Communications, 2010, 46 (42), pp.8061. ⟨10.1039/c0cc02439b⟩. ⟨hal-05469294⟩

  • Article dans une revue

Phase selective synthesis of nickel silicide nanocrystals in molten salts for electrocatalysis of the oxygen evolution reaction

Ram Kumar, Mounib Bahri, Yang Song, Francisco Gonell, Cyril Thomas, Ovidiu Ersen, Clément Sanchez, Christel Laberty-Robert, David Portehault

We report phase selective synthesis of intermetallic nickel silicide nanocrystals in inorganic molten salts. NiSi and Ni2Si nanocrystals are obtained by reacting a nickel (II) salt and sodium silicide Na4Si4 in the molten LiI-KI inorganic eutectic salt mixture. We report that nickel silicide…

Nanoscale, 2020, 12 (28), pp.15209-15213. ⟨10.1039/D0NR04284F⟩. ⟨hal-02923099⟩

  • Article dans une revue

Influence of Metal Salts Addition on Physical and Electrochemical Properties of Ethyl and Propylammonium Nitrate

David Ausín, José Trenzado, Mireille Turmine, Luis Varela, Oscar Cabeza, Elisa González Romero, Luisa Segade

In this work, we deepen in the characterization of two protic ionic liquids (PILs), ethylammonium nitrate (EAN) and propylammonium nitrate (PAN). With this aim, we determined the influence of inorganic nitrate salts addition on their physical properties and their electrochemical potential window (…

International Journal of Molecular Sciences, 2022, 23 (24), pp.16040. ⟨10.3390/ijms232416040⟩. ⟨hal-03919970⟩

  • 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⟩