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Phosphate Boosts Nonhydroxyl Radical Species Production upon Air Oxidation of Magnetite and Iron Sulfides at Neutral pH

Guillaume Morin, Frédéric Averseng, Xavier Carrier, Pierre Le Pape, Yishan Du, Yusheng Honge, Elora Bourbon, Giuseppe Sportelli, Tiago A da Silva, Alberto Mezzetti, Camille Baya, Thierry Allard, Jessica Brest, Maryse Rouelle

Heterogeneous Fenton-like reactions using O2 as sole oxidant are gaining interest for designing organic contaminant degradation in soils and groundwaters, since they may provide alternatives to current processes involving strong oxidants. Indeed, several Fe(II)-bearing oxide and sulfide mineral…

Journal of Physical Chemistry C, 2023, 127 (20), pp.9650-9662. ⟨10.1021/acs.jpcc.3c02236⟩. ⟨hal-04248112⟩

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Role of oxygen vacancies in the basicity of ZnO: From the model methylbutynol conversion to the ethanol transformation application

C. Drouilly, J.M. Krafft, F. Averseng, H. Lauron-Pernot, Delphine Bazer-Bachi, Céline Chizallet, V. Lecocq, Guylène Costentin

The parameters governing the basic reactivity of kadox and ex-carbonate zinc oxide samples towards alcohol conversion were investigated varying the atmosphere of pre-treatment for a model reaction, the methylbutynol (MBOH) conversion, and the ethanol conversion reaction, a transformation of…

Applied Catalysis A : General, 2012, 453, pp.121-129. ⟨10.1016/j.apcata.2012.11.045⟩. ⟨hal-00811509⟩

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Selective hydrodechlorination of 1,2-dichloroethane on NiSiBEA zeolite catalyst: Influence of the preparation procedure on a high dispersion of Ni centers

R. Baran, I.I. Kamińska, A. Śrębowata, S. Dzwigaj

NixSiBEA zeolites (x = 1-2 Ni wt.%) were prepared by a two-steps postsynthesis method which consists of (1) creation of vacant T-sites by dealumination of tetraethylammonium BEA zeolite with nitric acid and then (2) impregnation of resulting SiBEA zeolite with an aqueous solution of Ni(NO3)2,…

Microporous and Mesoporous Materials, 2013, 169, pp.120-127. ⟨10.1016/j.micromeso.2012.11.005⟩. ⟨hal-00811551⟩

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Beneficial effect of gelatin on iron gall ink corrosion

Alice Gimat, Anne Michelin, Pascale Massiani, Véronique Rouchon

Iron gall Inks corrosion causes paper degradation (browning, embrittlement) and treatments were developed to tackle this issue. They often include resizing with gelatin to reinforce the paper and its cellulosic fibers (of diameter approx. 10 µm). This work aimed at measuring the distribution of ink…

Heritage Science, 2021, 9 (1), ⟨10.1186/s40494-021-00593-2⟩. ⟨hal-03371072⟩

• Communication dans un congrès

Intérêt des revêtements N-halamines dans la lutte contre le développement des bactéries et du biofilm

Catherine Debiemme-Chouvy, Shan Gao, Hubert Cachet, Nadia Nazi, Vincent Humblot

L’enrayement du développement des biofilms ou de la prolifération de bactéries pathogènes est indispensable aussi bien pour des raisons de santé publique que pour des raisons économiques. Pour les milieux hydriques, à ces fins, des biocides oxydants sont fréquemment employés. Ils sont alors ajoutés…

Matériaux 2018, FFM; Société Chimique de France (SCF), Nov 2018, Strasbourg (67), France. ⟨hal-03978791⟩

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Crossover among structural motifs in Pd–Au nanoalloys

B. Zhu, H. Guesmi, J. Creuze, Bernard Legrand, C. Mottet

Physical Chemistry Chemical Physics, 2015, 17, pp.28129-28136. ⟨10.1039/C5CP00491H⟩. ⟨hal-01222110⟩

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Converting silicon nanoparticles into nickel iron silicide nanocrystals within molten salts for water oxidation electrocatalysis

Yang Song, Sandra Casale, Antoine Miche, David Montero, Christel Laberty-Robert, David Portehault

We synthesize metal silicide electrocatalysts for water oxidation, by using the high reactivity of silicon nanoparticles and the unique stability and low vapor pressure of molten salt solvents. We can then perform liquid-phase synthesis under vacuum at 300-400 C. This strategy yields FeSi, Ni 2 Si…

Journal of Materials Chemistry A, 2022, 10 (3), pp.1350-1358. ⟨10.1039/D1TA08097K⟩. ⟨hal-03537470⟩

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Deciphering the role and nature of phosphate species at the surface of stainless steel immersed in phosphoric acid solutions

I. Liascukiene, M. Ben Salah, Ph. Refait, L. Dhouibi, C. Methivier, J. Landoulsi, M. Jeannin

We investigate the evolution of the surface of a highly alloyed stainless steel (Sanicro 28) upon immersion in aqueous phosphoric acid solutions. For this purpose, both short-(few hours) and long-term immersion (several days) were carried out. A detailed analysis of XPS spectra allowed a…

Applied Surface Science, 2018, 434, pp.561 - 572. ⟨10.1016/j.apsusc.2017.10.153⟩. ⟨hal-01696318⟩

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Synthesis and characterization of Cr-ZSM-5 composite in fluoride medium and its performance in oxidation reaction of 2-mercaptobenzotiazole

Benchikh Imen, Djafri Fatiha, Djafri Ayada, Tabti Affaf, Franck Launay

Purpose The purpose of this paper is to synthesize Cr-ZSM-5 using hydrothermal synthesis in acidic fluoride medium and the investigation of its catalytic performance in heterogeneous oxidation of 2-mercaptobenzothiazole in the presence of H 2 O 2 . Design/methodology/approach The framework was…

International Journal of Clothing Science and Technology, 2017, 29 (4), pp.483-490. ⟨10.1108/IJCST-08-2016-0095⟩. ⟨hal-04015840⟩

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Phenylamine-functionalized mesoporous silica supported PdAg nanoparticles: a dual heterogeneous catalyst for formic acid/CO 2 -mediated chemical hydrogen delivery/storage

Kohsuke Mori, Shinya Masuda, Hiromasa Tanaka, Kazunari Yoshizawa, Michel Che, Hiromi Yamashita

PdAg nanoparticles supported on phenylamine-grafted mesoporous silica acted as a dual heterogeneous catalyst for the interconversion of H 2 and CO 2 .

Chemical Communications, 2017, 53 (34), pp.4677-4680. ⟨10.1039/C7CC00864C⟩. ⟨hal-04015748⟩