A comparative study of ceramic nanoparticles synthesized for antibiotic removal: catalysis characterization and photocat
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RESEARCH ARTICLE
A comparative study of ceramic nanoparticles synthesized for antibiotic removal: catalysis characterization and photocatalytic performance modeling Oussama Baaloudj 1,2 & Noureddine Nasrallah 1 & Mohammed Kebir 1,3 & Lotfi Khezami 4,5 & Abdeltif Amrane 2 & Aymen Amin Assadi 2 Received: 28 May 2020 / Accepted: 9 November 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The heterogeneous photocatalysis process has been known to provide significant levels of degradation and mineralization of emerging contaminants including antibiotics. For that, nanoparticle CuCr2O4 (CCO) ceramics were successfully prepared via sol-gel (SG) and co-precipitation (CP) methods to obtain spinel with desired structural features and properties and also to improve the photocatalytic performances. The CCO crystallite phase was produced at 750 °C all ceramics, disregarding the synthesis route. CCO physical and chemical properties were checked by X-ray diffraction (XRD) with Rietveld refinement, Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), transmission electron microscope (TEM), and diffuse reflectance solid (DRS). The XRD patterns demonstrated that the synthesized catalysts displayed a small crystallite size between 17.45 and 26.24 nm for SG and 20.97 and 36.86 nm for the CCOCP samples. The observation by SEM and TEM of the nanopowders showed a typical morphology with comparable particle sizes for both synthesized routes (20–30 nm). SG agglomeration rates were higher, and particles stick together more efficiently considering the CP method, while the CCOCP method led to a more significant porosity. Their photocatalytic and adsorption performances were examined for cefaclor (CFC) removal chosen as a target pharmaceutical contaminant in water. The results obtained by the methods differed since nanoparticles prepared by SG led to high photocatalytic activity. In contrast, a high CFC adsorption was observed for those prepared via the CP method, and that agreed with the findings of the characterization analysis. The kinetics of the adsorption process was found to follow the pseudo-second-order rate law. In contrast, the data of the photodegradation process were further found to comply with the Lagergren kinetic law. Nevertheless, the global reaction rate is probably controlled by the intra-particular diffusion of CFC, regardless of the elimination process. Keywords Ceramics nanoparticles . Co-precipitation . Sol-gel processes . Photocatalysis . Adsorption . Kinetic modeling Responsible Editor: Sami Rtimi * Aymen Amin Assadi [email protected] 1
Laboratory of Reaction Engineering, Faculty of Mechanical Engineering and Process Engineering, USTHB, 32 Algiers, BP, Algeria
2
Univ Rennes-ENSCR/UMR CNRS 6226, Campus de Beaulieu, av. du Général Leclerc, 35700 Rennes, France
3
Research Unit on Analysis and Technological Development in Environment (UR-ADTE/CRAPC), BP 384 Bou-Ismail Tipaza, Algeria
4
Department of Chemistry, Colleg
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