• Article dans une revue

Au/xCeO(2)/Al2O3 catalysts for VOC elimination: oxidation of 2-propanol

P. Lakshmanan, L. Delannoy, C. Louis, N. Bion, J.M. Tatibouet

2- Propanol oxidation (1 mol% in air) was investigated over 1% Au/CeO2, 1% Au/Al2O3 and 1% Au/xCeO(2)/Al2O3 (x = 1.5, 3, 5 and 10 wt%) catalysts and the corresponding pure supports. The effects of the catalyst activation procedure (calcination or reduction), cerium oxide morphology and loading, the…

Catalysis Science & Technology, 2013, 3 (11), pp.2918-2925. ⟨10.1039/c3cy00238a⟩. ⟨hal-00963532⟩

• Article dans une revue

A soft-chemistry assisted strong metal–support interaction on a designed plasmonic core–shell photocatalyst for enhanced photocatalytic hydrogen production

Getaneh Diress Gesesse, Cong Wang, Bor Kae Chang, Shih-Hsuan Tai, Patricia Beaunier, Robert Wojcieszak, Hynd Remita, Christophe Colbeau-Justin, Mohamed Nawfal Ghazzal

Engineering photocatalysts based on gold nanoparticles has emerged as new strategy to improve the solar energy conversion.

Nanoscale, 2020, 12 (13), pp.7011-7023. ⟨10.1039/C9NR09891G⟩. ⟨hal-02521511⟩

• Article dans une revue

Highly Promoted Photocatalytic Hydrogen Generation by Multiple Electron Transfer Pathways

Xiaojiao Yuan, Cong Wang, Diana Dragoe, Patricia Beaunier, Christophe Colbeau-Justin, Hynd Remita

Applied Catalysis B: Environmental, 2021, 281, pp.119457. ⟨10.1016/j.apcatb.2020.119457⟩. ⟨hal-03092690⟩

• Article dans une revue

Fe3+-doped ordered mesoporous γ-Fe2O3/SiO2 microspheres as a highly efficient magnetically separable heterogeneous Fenton catalyst

Nassira Ferroudj, Patricia Beaunier, Anne Davidson, Sébastien Abramson

Here, several γ-Fe 2 O 3 /SiO 2 nanocomposite microspheres were synthesized, characterized and tested as magnetically separable heterogeneous catalysts in an advanced oxidation process. A strong relation between the structure and the activity of these materials was evidenced. Two parameters,…

Microporous and Mesoporous Materials, 2021, 326, pp.111373. ⟨10.1016/j.micromeso.2021.111373⟩. ⟨hal-03524378⟩

• 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

Revealing Size Dependent Structural Transitions in Supported Gold Nanoparticles in Hydrogen at Atmospheric Pressure

Abdallah Nassereddine, Qing Wang, David Loffreda, Christian Ricolleau, Damien Alloyeau, Catherine Louis, Laurent Delannoy, Jaysen Nelayah, Hazar Guesmi

The enhancement of the catalytic activity of gold nanoparticles with their decreasing size is often attributed to the increasing proportion of low-coordinated surface sites. This correlation is based on the paradigmatic picture of working gold nanoparticles as perfect crystal forms having complete…

Small, 2021, pp.2104571. ⟨10.1002/smll.202104571⟩. ⟨hal-03367920⟩

• Article dans une revue

EIS measurements in molecular electronics

Meiling Su, Kieu Ngo, Jean-Christophe Lacroix, Mireille Turmine, Vincent Vivier

Although electrochemical impedance spectroscopy (EIS) has already demonstrated its reliability in electrochemistry and organic semiconductors as a tool for tracking charge-carrier transport, its potential in molecular electronics has not yet been fully realized. In this emerging field, where DC-…

Current Opinion in Electrochemistry, 2026, 57, pp.101830. ⟨10.1016/j.coelec.2026.101830⟩. ⟨hal-05528626⟩

• Article dans une revue

Successive Strong Electrostatic Adsorptions of [RhCl6]3– on Tungstated-Ceria as an Original Approach to Preserve Rh Clusters From Sintering Under High-Temperature Reduction

Jeffrey Miller, Neil Schweitzer, Mimoun Aouine, Philippe Vernoux, Abdelmalik Boufar, Juliette Blanchard, Jean-Marc Krafft, Christophe Méthivier, Céline Sayag, Frédéric Ser, Mickaël Sicard, Cyril Thomas

Supported transition metal materials have been identified as ideal candidates for decades to catalyze various reactions of interest in the fields of hydrocarbon refining, energy and environmental catalysis. As the resources in transition metals on earth are known to be limited, it appears to be of…

Journal of Physical Chemistry C, 2021, 125 (45), pp.25094-25111. ⟨10.1021/acs.jpcc.1c07644⟩. ⟨hal-03449235⟩

• Article dans une revue

Prebiotic chemistry

J.F. Lambert, M. Sodupe, P. Ugliengo

Without doubt, one of the most fascinating questions ever asked is ''What is life?'', immediately followed by ''How and where did life arise?''. Both questions are by no means exclusively related to chemistry and biology. Indeed, it was soon realized that…

Chemical Society Reviews, 2012, 41, pp.5373-5374. ⟨10.1039/c2cs90061k⟩. ⟨hal-00809265⟩

• Article dans une revue

Defect-related multicolour emissions in ZnO tetrapods: from violet, over green to yellow

Miao Zhang, Frédéric Averseng, Francia Haque, Patrizia Borghetti, Jean-Marc Krafft, Benoît Baptiste, Guylène Costentin, Slavica Stankic

The nature of defects in ZnO smoke was studied at different stages of the materials' history by combining photoluminescence (PL) and electron paramagnetic resonance (EPR) spectroscopies. In contrast to studies previously reported on ZnO nanopowders, high vacuum conditions (P < 10-5 mbar)…

Nanoscale, 2019, 11 (11), pp.5102-5115. ⟨10.1039/C8NR09998G⟩. ⟨hal-02169364⟩