• Article dans une revue

Selective uptake of alkaline earth metals by cyanobacteria forming intracellular carbonates

Nithavong Cam, Karim Benzerara, Thomas Georgelin, Maguy Jaber, Jean-Francois Lambert, Melanie Poinsot, Feriel Skouri-Panet, Laure Cordier

The uptakes of Ca, Sr and Ba by two cyanobacterial strains, Cyanothece sp. PCC7425 and Gloeomargarita lithophora, both forming intracellular carbonates, were investigated in laboratory cultures. In the culture medium BG 11 amended with 250 μM of Ca and 50 or 250 μM of Sr and Ba, G. lithophora…

Environmental Science and Technology, 2016, 50 (21), pp.11654-11662. ⟨10.1021/acs.est.6b02872⟩. ⟨hal-01383264⟩

• Article dans une revue

In vitro synthesis of amorphous Mg-, Ca-, Sr- and Ba-carbonates: what do we learn about intracellular calcification by cyanobacteria?

Nithavong Cam, Thomas Georgelin, Maguy Jaber, Jean-François Lambert, Karim Benzerara

Some cyanobacteria, including Candidatus Gloeomargarita lithophora, which was isolated from Lake Alchichica (Mexico), can form intracellular carbonates. This contradicts the common paradigm that cyanobacterial calcification is always extracellular and suggests that calcification might be controlled…

Geochimica et Cosmochimica Acta, 2015, 161, pp.36-49. ⟨10.1016/j.gca.2015.04.003⟩. ⟨hal-01147190⟩

• 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

Influence of natural adsorbates of magnesium oxide on its reactivity in basic catalysis

Damien Cornu, Hugo Petitjean, Guylène Costentin, Hazar Guesmi, Jean-Marc Krafft, Hélène Lauron-Pernot

Solid materials possessing basic properties are naturally covered by carbonates and hydroxyl groups. Those natural adsorbates modify their chemical reactivity. This article aims to specifically evidence the role of surface carbonates and hydroxyls in basic heterogeneous catalysis on MgO. It…

Physical Chemistry Chemical Physics, 2013, 15 (45), pp.19870-19878. ⟨10.1039/C3CP53624F⟩. ⟨hal-00911519⟩

• Article dans une revue

Influence of acid–base properties of Mg-based catalysts on transesterification: role of magnesium silicate hydrate formation

Damien Cornu, Longfei Lin, Maya Mounir Daou, Maguy Jaber, Jean-Marc Krafft, Virginie Herledan, Guillaume Laugel, Yannick Millot, Hélène Lauron-Pernot

The transesterification reaction assisted through heterogeneous basic catalysis was thoroughly studied because of its importance in transforming biomass, as for biodiesel production or lactone opening. As catalysts with the strongest basic properties are not always the most efficient ones, a series…

Catalysis science and Technology, 2017, 7 (8), pp.1701-1712. ⟨10.1039/C6CY02604D⟩. ⟨hal-01547299⟩

• Article dans une revue

Molybdenum oxide catalysts for metathesis of higher 1-alkenes via supporting MoO2(acetylacetonate)2 and MoO2(glycolate)2 on SBA-15 mesoporous molecular sieves

Hynek Balcar, Diwa Mishra, E. Marceau, Xavier Carrier, Naděžda Žilková, Zdeněk Bastl

Applied Catalysis A : General, 2009, 359 (1-2), pp.129-135. ⟨10.1016/j.apcata.2009.02.037⟩. ⟨hal-03032165⟩

• Chapitre d'ouvrage

Synthesis of metal oxide catalysts

Xavier Carrier, Sébastien Royer, E. Marceau

This chapter gives an overview of the current preparation strategies for the synthesis of bulk and supported metal oxide catalysts, in order to give rational guides to understand the synthetic challenges associated with the preparation of these catalytic systems developed in the successive chapters…

Védrine, Jacques C. Metal Oxides in Heterogeneous Catalysis, Elsevier, pp.43-103, 2018, 978-0-12-811631-9. ⟨10.1016/b978-0-12-811631-9.00002-8⟩. ⟨hal-03575930⟩

• Article dans une revue

In situ observation of atomic redistribution in alloying gold-silver nanorods

Jessi E S van Der Hoeven, Tom a J Welling, Tiago a G da Silva, Jeroen E van den Reijen, Camille La Fontaine, Xavier Carrier, Catherine Louis, Alfons van Blaaderen, Petra E de Jongh

The catalytic performance and optical properties of bimetallic nanoparticles critically depend on the atomic distribution of the two metals in the nanoparticles. However, at elevated temperatures, during light induced heating or during catalysis atomic redistribution can occur. Measuring such metal…

ACS Nano, 2018, 12 (8), pp.8467-8476. ⟨10.1021/acsnano.8b03978⟩. ⟨hal-03157963⟩

• Article dans une revue

Superior Stability of Au/SiO 2 Compared to Au/TiO 2 Catalysts for the Selective Hydrogenation of Butadiene

Nazila Masoud, Laurent Delannoy, Herrick Schaink, Ad van Der Eerden, Jan Willem de Rijk, Tiago A. G. Silva, Dipanjan Banerjee, Johannes D. Meeldijk, Krijn P. de Jong, Catherine Louis, Petra E. de Jongh

Supported gold nanoparticles are highly selective catalysts for a range of both liquid-phase and gas-phase hydrogenation reactions. However, little is known about their stability during gas-phase catalysis and the influence of the support thereon. We report on the activity, selectivity, and…

ACS Catalysis, 2017, 7 (9), pp.5594 - 5603. ⟨10.1021/acscatal.7b01424⟩. ⟨hal-01651990⟩

• Article dans une revue

Corrigendum: Silica-Supported Au-Ag Catalysts for the Selective Hydrogenation of Butadiene

Nazila Masoud, Laurent Delannoy, Christophe Calers, Jean-Jacques Gallet, Fabrice Bournel, Krijn de Jong, Catherine Louis, Petra de Jongh

ChemCatChem, 2017, 9 (20), pp.4013-4013. ⟨10.1002/cctc.201701445⟩. ⟨hal-03884393⟩