• 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⟩

• Autre publication scientifique

Carbon nitride boosts the CO2 methanation activity of Ni/CeO2

Yingrui Zhao, Plaifa Hongmanorom, Feilong Yang, Sandra Casale, Capucine Sassoye, Ales Styskalik, Damien Debecker

Selective CO2 methanation using green H2 offers a promising approach for tackling both energy and environ- mental challenges. Herein, a Ni/CeO2 catalyst was synthesized using a one-pot method in the presence of sacrificial C3N4 and evaluated for CO₂ methanation. The catalyst exhibited a high CO2…

2025, pp.119153. ⟨10.1016/j.jece.2025.119153⟩. ⟨hal-05482301⟩

• Article dans une revue

Investigating nalidixic acid adsorption onto ferrihydrite and maghemite surfaces: molecular-level insights <i>via</i> continuous-flow ATR-FTIR spectroscopy

Ana C Schuh Frantz, Alberto Mezzetti, Ari Paavo Seitsonen, Sylvie Nelieu, Etienne Balan, Guillaume Morin, Xavier Carrier

Contaminants sequestration by iron oxides are of particular relevance in environmental chemistry and Fourier Transform Infrared (FTIR) Spectroscopy in Attenuated Total Reflectance (ATR) mode is used in this study to investigate the molecular-scale adsorption mechanism of the antibiotic nalidixic…

• Autre publication scientifique

Spark ablation: a dry, physical, and continuous method to prepare powdery metal nanoparticle-based catalysts

Damien Debecker, Plaifa Hongmanorom, Tobias Pfeiffer, Bernardus Zijlstra, Yingrui Zhao, Sandra Casale, Capucine Sassoye

We report the first synthesis of a powdery heterogeneous catalyst using spark ablation technology. A TiO 2 powder is aerosolized in a vortex and injected close to the electrode of a spark ablation nanoparticle generator, to be decorated with Ni nanoparticles. The resulting Ni/TiO2 catalyst is…

2024, pp.11076-11079. ⟨10.1039/d4cc03469d⟩. ⟨hal-05482360⟩

• Article dans une revue

What Do Tantalum Framework Sites Look Like in Zeolites? A Combined Theoretical and Experimental Investigation

Frederik Tielens, Tetsuya Shishido, Stanislaw Dzwigaj

Ab initio periodic DFT calculations on the structural and energy properties of different model tantalum framework sites in tantalum-substituted socialite cavities are presented and related to experimental FTIR measurements on Ta-containing SiBEA zeolites. The tantalum framework sites are…

Journal of Physical Chemistry C, 2010, 114 (21), pp.9923-9930. ⟨10.1021/jp102181m⟩. ⟨hal-00604808⟩

• Article dans une revue

EcDBS1R6: A novel cationic antimicrobial peptide derived from a signal peptide sequence

William Porto, Luz Irazazabal, Vincent Humblot, Evan Haney, Suzana Ribeiro, Robert E.W. Hancock, Ali Ladram, Octavio Franco

Biochimica et Biophysica Acta (BBA) - General Subjects, 2020, 1864 (9), pp.129633. ⟨10.1016/j.bbagen.2020.129633⟩. ⟨hal-03012700⟩

• Article dans une revue

EPR Characterization and Reactivity of Surface-Localized Inorganic Radicals and Radical Ions

Mario Chiesa, Elio Giamello, Michel Che

A review. The role of surface inorg. radicals and radical ions formed at the interface between a solid and a gas phase was discussed. The formation of such species is relevant to field such as electrochem., heterogeneous catalysts, photocatalysis and corrosion. The characterization of these…

Chemical Reviews, 2010, 110 (3), pp.1320-1347. ⟨10.1021/cr800366v⟩. ⟨hal-00604710⟩

• Article dans une revue

Orange Carotenoid Protein in Mesoporous Silica: A New System towards the Development of Colorimetric and Fluorescent Sensors for pH and Temperature

Silvia Leccese, Andrea Calcinoni, Adjélé Wilson, Diana Kirilovsky, Donatella Carbonera, Thomas Onfroy, Claude Jolivalt, Alberto Mezzetti

Orange carotenoid protein (OCP) is a photochromic carotenoprotein involved in the photoprotection of cyanobacteria. It is activated by blue-green light to a red form OCPR capable of dissipating the excess of energy of the cyanobacterial photosynthetic light-harvesting systems. Activation to OCPR…

Micromachines, 2023, 14 (10), pp.1871. ⟨10.3390/mi14101871⟩. ⟨hal-04229121⟩

• Article dans une revue

Promoting NH3 synthesis by supporting Ru nanoparticles on hydroxyapatites of appropriate chemical composition: Towards structure–activity relationships

Sabrina Akrour, Guylène Costentin, Sandra Casale, Alexandre Vimont, Cyril Thomas

Ammonia is the second most widely produced chemical in the world. It is essential for fertilizer manufacturing and has recently emerged as an energy carrier. Ammonia has been produced for over 100 years using the Haber-Bosch process, which is highly energy-intensive and accounts for nearly 3 % of…

Applied Catalysis B: Environmental, 2025, 384, pp.126141. ⟨10.1016/j.apcatb.2025.126141⟩. ⟨hal-05351385⟩

• Poster de conférence

Study of nitric acid reduction mechanisms on a silicon-enriched austenitic stainless steel under heat transfer conditions: a technological challenge

Inès Bahtit, Beatriz Puga, Nathalie Gruet, Ramon Novoa, Vincent Vivier

The lifespan control of structural materials used for spent nuclear fuel processing facilities is a major industrial challenge. Indeed, these structural materials, mainly stainless steels, are in contact with a complex environment (hot and concentrated nitric acid including a large number of…

EMCR 2025, Jun 2025, Venice, Italy. 2025. ⟨cea-05504179⟩