• Thèse

Photocatalyseurs nanocomposites UCNP@SiO2@ZnO, activés par rayonnement proche infrarouge, pour la dépollution des eaux usées, Nanocomposites photocatalysts UCNP@SiO2@ZnO, active under near-infrared light, for wastewater treatment

David Hu

Les photocatalyseurs tels que l’oxyde de zinc (ZnO) peuvent minéraliser les polluants organiques toxiques et persistants dans les eaux usées. Ils ne sont cependant pas efficients dans les eaux très contaminées, suite à la nécessité d’une activation par une lumière UV qui n’y pénètre que faiblement…, Photocatalysts such as zinc oxide (ZnO) can mineralize toxic and persistent organic pollutants present in wastewaters. Unfortunately, these photocatalysts loose part of their effectiveness because they need to be activated by UV light, which has a limited penetration depth in highly contaminated…

Matériaux. Sorbonne Université, 2021. Français. ⟨NNT : 2021SORUS017⟩. ⟨tel-04063743⟩

• Article dans une revue

Screening Earth Analog Exoplanets on the Basis of a Predicted Nitrogen over Phosphorus Ratio

Hervé Toulhoat

Abstract Since the first discovery in 1995, data for over 5300 exoplanets have been documented in the NASA archive, revealing a vast diversity. Identifying life-enabling analogs of the Earth among this rapidly expanding catalog is of major interest. The stability of liquid water at the planetary…

The Astrophysical Journal, 2023, 958 (2), pp.124. ⟨10.3847/1538-4357/acfc4e⟩. ⟨hal-04314044⟩

• 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

Thiol-Poly(Sodium Styrene Sulfonate) (PolyNaSS-SH) Gold Complexes: From a Chemical Design to a One-Step Synthesis of Hybrid Gold Nanoparticles and Their Interaction with Human Proteins

Ceĺine Falentin-Daudre, Mounia Aitouakli, Jean Sebastien Baumann, Nadia Bouchemal, Vincent Humblot, Veronique Migonney, Jolanda Spadavecchia

This study highlights recent advances in the synthesis of nanoconjugates based on gold (Au(III)) complex with a bioactive polymer bearing sulfonate groups called thiol-poly(sodium styrene sulfonate) (PolyNaSS-SH) with various molecular weights (5, 10, and 35 kDa). The three nanomaterials differ…

ACS Omega, 2020, pp.8137-8145. ⟨10.1021/acsomega.0c00376⟩. ⟨hal-02571960⟩

• Communication dans un congrès

Laboratory simulation to support the search for organic molecules at the surface of Mars

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

The search for organic carbon at the surface of Mars, as clues of past habitability or remnants of life, is a major science goal of Mars’ exploration. Understanding the chemical evolution of organic molecules under current Martian environmental conditions is essential to support the analyses…

40th COSPAR Scientific Assembly, Aug 2014, Moscow, Russia. pp.Abstract B0.2-25-14. ⟨insu-01148653⟩

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Smartphone spectrometer for colorimetric biosensing

Yi Wang, Xiaohu Liu, Peng Chen, Nhung Thi Tran, Jinling Zhang, Wei Sheng Chia, Souhir Boujday, Bo Liedberg

We report on a smartphone spectrometer for colorimetric biosensing applications. The spectrometer relies on a sample cell with an integrated grating substrate, and the smartphone's built-in light-emitting diode flash and camera. The feasibility of the smartphone spectrometer is demonstrated…

Analyst, 2016, 141 (11), pp.3233 - 3238. ⟨10.1039/C5AN02508G⟩. ⟨hal-01547878⟩

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Effect of Cs impregnation on the properties of platinum in Pt/Na-BEA and Pt/Cs-BEA catalysts

Pascale Massiani, E.R. Silva, F.R. Ribeiro, M.F. Ribeiro, J.M. Silva

The presence of alkali cations in zeolite framework provides peculiar basic properties that influence the characteristics and reactivity of supported metal particles. Particularly, the addition of increasing amounts of cesium in Pt/Na-BEA and Pt/Cs-BEA catalysts, by CsOH impregnation, leads to…

Catalysis Today, 2005, 107-108, pp.792-799. ⟨hal-00126970⟩

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Electron transfers in a TiO 2 -containing MOR zeolite: synthesis of the nanoassemblies and application using a probe chromophore molecule

Alexandre Legrand, Alain Moissette, Matthieu Hureau, Sandra Casale, Pascale Massiani, Herve Vezin, Anne-Sophie Mamede, Isabelle Batonneau-Gener

Ionization of a guest molecule occluded in a TiO 2 -containing zeolite and electron transfers to the conduction band of the conductive material placed nearby. New assemblies constituted by a microporous matrix of mordenite (MOR) zeolite on which TiO2 nanoclusters are deposited were synthesized…

Physical Chemistry Chemical Physics, 2014, 16 (26), pp.13145-13155. ⟨10.1039/c4cp01543f⟩. ⟨hal-04732895⟩

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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

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

• Article dans une revue

L’impact des concepts de Pierre-Gilles de Gennes sur l’innovation en France dans le domaine des matériaux

Charles de Novion, Hervé Toulhoat, Didier Roux, Patrick Maestro, Gustavo Luengo, Fabien Leonforte, Nawel Baghdadli, Pluton Pullumbi, Jean-Michel Vacherand, Yannick Peysson, Benjamin Herzhaft, Étienne Guyon, Françoise Brochard-Wiart, Madeleine Veyssié

Reflets de la Physique, 2018, 56, pp.10-19. ⟨10.1051/refdp/201856010⟩. ⟨hal-04015492⟩