Polyol-made Mn3O4 nanocrystals as efficient Fenton-like catalysts

Tarik Rhadfi (1, 2) , Jean-Yves Piquemal (1) , Lorette Sicard (1) , Fréderic Herbst (1) , Emmanuel Briot (3) , Marc F. Benedetti (4) , Ahmed Atlamsani (5)

1 ITODYS (UMR_7086) - Interfaces, Traitements, Organisation et Dynamique des Systèmes
2 Univ Abdelmalek Essaadi, Fac Sci, Lab Phys Chim Interfaces & Environm, Tetouan 93000, Morocco
3 PECSA - Physicochimie des Electrolytes, Colloïdes et Sciences Analytiques
4 IPGP (UMR_7154) - Institut de Physique du Globe de Paris
5 Laboratoire de Chimie Physique Appliquee, Chimie des Surfaces, Interfaces et Catalyse, ,

Nanosized Mn3O4 single crystals are prepared using the polyol method and characterized with powder X-ray diffraction, transmission electron microscopy and physisorption experiments. Depending on the reaction time, either oval-like nanocrystals with a mean TEM size of 7.9 nm or rhomboedron-like particles with a mean TEM size of 12.6 nm are isolated. These particles are active towards the decomposition of aqueous hydrogen peroxide at room temperature and the data show that the reaction kinetics depend on the particle size and shape. The degradation of a model substrate, methylene blue is also investigated

Keywords: Mn3O4; Nanomaterials; Polyol; Hydrogen peroxide; Fenton chemistry

Domains: Sciences of the Universe [physics]; Earth Sciences

Tarik Rhadfi, Jean-Yves Piquemal, Lorette Sicard, Fréderic Herbst, Emmanuel Briot, et al.. Polyol-made Mn3O4 nanocrystals as efficient Fenton-like catalysts. Applied Catalysis A : General, 2010, 386 (1-2), pp.132-139. ⟨10.1016/j.apcata.2010.07.044⟩. ⟨insu-02885874⟩