• Article dans une revue

Discrimination of Surface and Bulk Structure of Crystalline Hydroxyapatite Nanoparticles by NMR

Manel Ben Osman, Sarah Diallo-Garcia, Virginie Herledan, Dalil Brouri, Tetsuya Yoshioka, Jun Kubo, Yannick Millot, Guylène Costentin

Solid state 1H and 31P NMR spectroscopy was used to characterize well-crystallized hydroxyapatite samples of different stoichiometry prepared by a precipitation route. The aim of the paper was to investigate the bulk structural features of samples with different stoichiometry and to discriminate…

Journal of Physical Chemistry C, 2015, 119 (40), pp.23008-23020. ⟨10.1021/acs.jpcc.5b08732⟩. ⟨hal-01212297⟩

• Article dans une revue

Revisiting active sites in heterogeneous catalysis: Their structure and their dynamic behaviour

Jacques C. Vedrine

This short review article aims at revisiting the description of active sites in heterogeneous catalysis on solid surfaces and their role in catalyst activity and selectivity. Special emphasis is brought to: (i) structure of the solid surface; (ii) importance of active site isolation on the surface…

Applied Catalysis A : General, 2014, 474, pp.40-50. ⟨10.1016/j.apcata.2013.05.029⟩. ⟨hal-01121663⟩

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Self-Assembly of Fatty Acids on Hydroxylated Al Surface and Effects of Their Stability on Wettability and Nanoscale Organization

Irma Liascukiene, Marie Steffenhagen, Svajus J. Asadauskas, Jean-François Lambert, Jessem Landoulsi

The self-assembly of fatty acids (FA) on the surfaces of inorganic materials is a relevant way to control their wetting properties. While the mechanism of adsorption on model flat substrate is well described in the literature, interfacial processes remain poorly documented on nanostructured…

Langmuir, 2014, 30 (20), pp.5797-5807. ⟨10.1021/la404756y⟩. ⟨hal-01121646⟩

• Article dans une revue

Influence of synthesis parameters of SBA-15 supported palladium catalysts for methane combustion and simultaneous NOx reduction

Maya Boutros, María Elena Gálvez, Thomas Onfroy, Patrick da Costa

Several synthesis routes were followed to prepare ordered mesoporous silica, SBA-15, and alumino-silica, Al–SBA-15, supported palladium catalysts. Synthesis method as well as the nature of precursor used in the preparation of these catalysts strongly determined their physico-chemical features which…

Microporous and Mesoporous Materials, 2014, 183, pp.1-8. ⟨10.1016/j.micromeso.2013.08.031⟩. ⟨hal-01121621⟩

• Article dans une revue

To be born is not enough: the key role of innovative start-ups

Alessandra Colombelli, Jackie Krafft, Marco Vivarelli

This paper investigates the reasons why entry per se is not necessarily good and the evidence showing that innovative start-ups survive longer than their non-innovative counterparts. In this framework, our own empirical analysis shows that greater survival is achieved when start-ups engage…

Small Business Economics, 2016, 47 (2), pp.1-15. ⟨10.1007/s11187-016-9716-y⟩. ⟨halshs-01248721⟩

• Article dans une revue

Surface plasmon resonance: signal amplification using colloidal gold nanoparticles for enhanced sensitivity

Sabine Szunerits, Jolanda Spadavecchia, Rabah Boukherroub

Among all the detection methods developed for bioassays, optical-based approaches are the most popular techniques. A widely used and accepted bioanalytical technique for routine characterization of molecular recognition events at a solid interface is surface plasmon resonance (SPR) spectroscopy.…

Critical Reviews in Analytical Chemistry, 2014, 33, pp.153-164. ⟨10.1515/revac-2014-0011⟩. ⟨hal-01071317⟩

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Enzymatic fuel cells solely supplied with unpurified cellobiose dehydrogenase and laccase in microorganism's culture supernatants

Sabine Sane, Corinna Heilemann, Pavel Salavei, Stefanie Rubenwolf, Claude Jolivalt, Catherine Madzak, Roland Zengerle, Peter J. Nielsen, Sven Kerzenmacher

Enzymatic electrodes have great potential for catalysing the direct conversion of chemical compounds into electricity with the use of redox enzymes. However, expensive and time-consuming enzyme purification and the frequent need to add mediators are considered as drawbacks of enzymatic electrodes.…

ChemElectroChem, 2014, 1 (11), pp.1886-1894. ⟨10.1002/celc.201402276⟩. ⟨hal-01204424⟩

• Communication dans un congrès

Impact of nontronite on the evolution of organic molecules at the surface of Mars

Patrice Coll, Olivier Poch, Maguy Jaber, Jean-François Lambert, Thomas Georgelin, Cyril Szopa, Fabien Stalport

Several evidences suggest that early Mars offered favorable conditions for long-term sustaining water. As a consequence, we can assume that in those days, endogenous chemical processes, or even primitive life, may have produced organic matter on Mars. Moreover, exogenous delivery from small bodies…

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Influence of partial dealumination of BEA zeolites on physicochemical and catalytic properties of AgAlSiBEA in H2-promoted SCR of NO with ethanol

Nataliia O. Popovych, Pavlo I. Kyriienko, Sergiy O. Soloviev, Svitlana M. Orlyk, Stanislaw Dzwigaj

The two-step postsynthesis method allows obtaining AlSiBEA zeolites with different degree of dealumination (Si/Al = 100 and 200). Physicochemical properties (crystallinity, hydroxyl group coverage, acidic sites and nature of silver species) of AlSiBEA and AgAlSiBEA were investigated by XRD, DR UV–…

Microporous and Mesoporous Materials, 2016, 226, pp.10-18. ⟨10.1016/j.micromeso.2015.12.031⟩. ⟨hal-01259919⟩

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Immobilization of atrazine on gold, a first step towards the elaboration of an indirect immunosensor, characterised by XPS and FT-IRRAS

Michèle Salmain, Natahlie Fischer-Durand, Céline Roche, Claire-Marie Pradier

As part of our long-term goal to design a novel type of immunosensor based on IR transduction, we devised two strategies to immobilize derivatives of the herbicide atrazine on the surface of planar gold substrates. Both strategies take advantage of the well-known formation of self-assembled…

Surface and Interface Analysis, 2006, 38 (9), pp.1276-1284. ⟨10.1002/sia2390⟩. ⟨hal-00111183⟩