• Article dans une revue

Cyanobacterial formation of intracellular Ca-carbonates in undersaturated solutions

Nithavong Cam, Karim Benzerara, Thomas Georgelin, Maguy Jaber, Jean-François Lambert, Mélanie Poinsot, Fériel Skouri-Panet, David Moreira, Purificacion Lopez-Garcia, Emmanuelle Raimbault, Laure Cordier, Didier Jezequel

Cyanobacteria have long been thought to induce the formation of Ca-carbonates as secondary by-products of their metabolic activity, by shifting the chemical composition of their extracellular environment to conditions favoring mineral precipitation. Some cyanobacterial species forming Ca-carbonates…

Geobiology, 2018, 16 (1), pp.49-61. ⟨10.1111/gbi.12261⟩. ⟨hal-01655173⟩

• Article dans une revue

The structural and the photoelectrochemical properties of ZnO–ZnS/ITO 1D hetero-junctions prepared by tandem electrodeposition and surface sulfidation: on the material processing limits

A. Brayek, S. Chaguetmi, M. Ghoul, I. Ben Assaker, R. Chtourou, P. Decorse, P. Beaunier, S. Nowak, F. Mammeri, S. Ammar

ZnO–ZnS 1D hetero-nanostructures were prepared by an easy and scalable processing route. It consists of ZnO nanorod electrodeposition on ITO substrate and surface sulfidation by ion exchange in an aqueous Na 2 S solution. Increasing the treatment contact time (t c) from 8 to 48 h involves different…

RSC Advances, 2018, 8 (21), pp.11785 - 11798. ⟨10.1039/c8ra00176f⟩. ⟨hal-01748875⟩

• Article dans une revue

Stabilisation of small mono- and bimetallic gold–silver nanoparticles using calix[8]arene derivatives

Priyanka Ray, Marie Clément, Cyril Martini, Ibrahim Abdellah, Patricia Beaunier, José-Luis Rodriguez-Lopez, Vincent Huc, Hynd Remita, Isabelle Lampre

In this paper, we report the synthesis of octa(hydroxy)-octa(mercaptobutoxy)calix[8]arene and its use as a stabiliser of nanoparticles (NPs). We show that the reduction of gold and/or silver ions in the presence of this calix[8]arene in ethanolic solutions leads to the formation of very small…

New Journal of Chemistry, 2018, 42 (17), pp.14128-14137. ⟨10.1039/C8NJ02451K⟩. ⟨hal-02399078⟩

• Poster de conférence

Nanostructure Characterization of Carbide-derived Carbons by Morphological Analysis of Transmission Electron Microscopy Images Combined with Physisorption and Raman Spectroscopy

Martin Oschatz, Pascaline Pre, Patricia Beaunier, Stefan Kaskel, Nickel Wielfried

11th international Symposium on the characterization of porous solids COPS XI, May 2017, Avignon, France. ⟨hal-02881501⟩

• Article dans une revue

Mesocellular silica foam-based Ni catalysts for dry reforming of CH4 (by CO2)

Oscar Daoura, Marie-Nour Kaydouh, Nissrine El-Hassan, Pascale Massiani, Franck Launay, Maya Boutros

Nickel-containing mesocellular silica foam (MCF) catalysts were prepared for dry reforming of methane (DRM). Different methods were used for the synthesis of the MCFs supports in order to enhance their surface areas and pore volumes. The incorporation of nickel was done by three different methods:…

Journal of CO2 Utilization, 2018, 24, pp.112-119. ⟨10.1016/j.jcou.2017.12.010⟩. ⟨hal-02414803⟩

• Article dans une revue

Bi2O3, BiVO4, and Bi2WO6: Impact of Surface Properties on Photocatalytic Activity under Visible Light

Tamar Saison, Nicolas Chemin, Corinne Chaneac, Olivier Durupthy, Valerie Ruaux, Laurence Mariey, Françoise Mauge, Patricia Beaunier, Jean-Pierre Jolivet

Bismuth-based oxides have attractive photocatalytic properties under visible light. A better understanding of the origin of that good photocatalytic activity should allow its control and its optimization. In this Article, we have studied the impact of surface properties on photocatalytic activity…

Journal of Physical Chemistry C, 2011, 115 (13), pp.5657-5666. ⟨10.1021/jp109134z⟩. ⟨hal-01840373⟩

• Article dans une revue

Real-time monitoring of Ti-Nb-Ta-Zr and commercially pure Ti interaction with H2O2 using atomic force microscopy and atomic emission spectroelectrochemistry

Agata Sotniczuk, Baojie Dou, Yangping Liu, Oumaïma Gharbi, Fan Sun, Halina Garbacz, Jeremy Gilbert, Kevin Ogle

This study offers a new approach to analyze surface behavior of titanium biomaterials during their exposure to the H2O2-enriched fluid which simulates post-operative inflammatory conditions. In this work in situ AFM and AESEC tests were exploited to study the origin of initial inflammatory-induced…

Applied Surface Science, 2024, 665, pp.160309. ⟨10.1016/j.apsusc.2024.160309⟩. ⟨hal-04752202⟩

• Article dans une revue

Catalytic behavior of nickel loaded on acid-activated and pillared clay in total gas-phase oxidation of ethanol

Nadjat Lahoues-Chakour, Siham Barama, Akila Barama, Brahim Djellouli, Cyril Domingos, Anne Davidson

Layered and acid-activated clays, used as catalytic support, were synthesized from natural Algerian montmorillonite. All supports were prepared by (1) pillaring with aquo/hydroxo/oxo Al clusters, in particular Al13 that contains only octahedral Al-species, (2) an acidic H2SO4 treatment, and (3)…

Journal of Nanoparticle Research, 2018, 20 (11), pp.294. ⟨10.1007/s11051-018-4385-1⟩. ⟨hal-02022621⟩

• Article dans une revue

Ordered mesoporous Fe-Al2O3 based-catalysts synthesized via a direct "one-pot" method for the dry reforming of a model biogas mixture

Karam Jabbour, Ali Saad, Lena Inaty, Anne Davidson, Pascale Massiani, Nissrine El Hassan

International Journal of Hydrogen Energy, 2019, 44 (29), pp.14889-14907. ⟨10.1016/j.ijhydene.2019.04.110⟩. ⟨hal-02414764⟩

• Article dans une revue

Role of solute-solvent hydrogen bonds on the ground state and the excited state proton transfer in 3-hydroxyflavone. A systematic spectrophotometry study

Simone Lazzaroni, Daniele Dondi, Alberto Mezzetti, Stefano Protti

Photochemical & Photobiological Sciences , 2018, 17 (7), pp.923-933. ⟨10.1039/C8PP00053K⟩. ⟨hal-04020487⟩