New hybrid MOF/polymer composites for the photodegradation of organic dyes

Chaima Brahmi (1, 2, 3, 4) , Mahmoud Benltifa (2) , Cyril Vaulot (1, 3) , Laure Michelin (1, 3) , Frédéric Dumur (5) , Franck Millange (6) , Michel Frigoli (7) , Aissam Airoudj (1, 3) , Fabrice Morlet-Savary (1, 3) , Latifa Bousselmi (4) , Jacques Lalevée (1, 3)

1 IS2M - Institut de Science des Matériaux de Mulhouse
2 ICR - Institut de Chimie Radicalaire
3 CERTE - Centre de Recherche et Technologies des Eaux
4 UCAR - Université de Carthage (Tunisie)
5 UVSQ Santé - Université de Versailles Saint-Quentin-en-Yvelines - UFR Sciences de la santé Simone Veil
6 SQU - Sultan Qaboos University
7 ILV - Institut Lavoisier de Versailles

Hybrid Metal Organic-Frameworks (MOF)/polymer materials have gathered many researcher's consideration thanks to their varied functionalities and high processability. Herein, Metal Organic Frameworks (MOFs) have been successfully incorporated into an acrylate polymer network by photopolymerization upon mild visible light irradiation at 405 nm. The synthesized MOF/polymer composites were very efficient for Acid Black removal from water reaching 96% of decomposition after 30 and 45 min of UV-Lamp irradiation in the presence of MIL-53(Cr)/polymer and HKUSTI-1(Cu)/polymer composites, respectively. Probing further, the photo-composites were characterized by several techniques including Thermogravimetric Analysis (TGA), Fourier-Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Energy-dispersive X-ray 2 analyses (EDX), X-Ray Diffraction analysis (DRX), Brunauer, Emmett and Teller (BET) specific surface area, Atomic Force Microscopy (AFM), Dynamic Mechanical Analysis (DMA) and UV-Visible diffuse reflectance spectroscopy. The different methods used to characterized the MOF-containing polymers revealed these polymers to exhibit a high rigidity, an excellent thermal stability, an interesting band gap energy as well as an exceptional stability after their reuse for many photocatalytic treatment cycles.

Domaines: Matériaux

Chaima Brahmi, Mahmoud Benltifa, Cyril Vaulot, Laure Michelin, Frédéric Dumur, et al.. New hybrid MOF/polymer composites for the photodegradation of organic dyes. European Polymer Journal, 2021, 154, pp.110560. ⟨10.1016/j.eurpolymj.2021.110560⟩. ⟨hal-03251026⟩