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In this work, we report on the synthesis of CaO doped CeO2 nanocomposites (NCs) prepared by a sonochemical-assisted temperature-controlled hydrothermal method. Considering the toxicity and recovery issues associated with nano-particles/composites, a novel approach has been attempted through the uniform dispersion of the CeO2-CaO NCs across a macro-/meso-porous polymer monolith template . The structural and morphological properties of the synthesized photocatalyst materials have been monitored by p-XRD, FE-SEM-EDAX, HR-TEM-SAED, XPS, FT-IR, UV-Vis-DRS, PLS, and BET analysis. The visible-light photocatalytic performance is monitored using varying stoichiometric ratios of CeO2-CaO NCs with best results achieved using, 20 wt.% CaO doped CeO2 NCs that are homogeneously dispersed on a 3D network of the porous polymer monolithic network. The CeO2-CaO NCs dispersed polymer monolith reveals superior photocatalytic activity in comparison to CaO doped CeO2 NCs that are likely to agglomerate in aqueous solutions that eventually reduce their process efficiency. The CeO2/CaO NCs dispersed polymer monolith exhibit excellent porosity and surface area, for the ultra-fast dissipation of organic molecules, apart from being durable and reusable. For photocatalysis studies, we have chosen an antimicrobial drug namely moxifloxacin, for the visible-light-induced dissipation, to counter the problems associated with the emergence of resistant bacteria. We hereby state that the prepared monolithic NCs are easy to synthesize, cost-effective, and reusable, thus making them an ideal heterogeneous photocatalyst for pollutant dissipation.
How to Cite
 S.N. Kumar, M. Ankita, M.A. Maheswari, D. Prabhakaran, J. Environ Chem Eng, 9, 104846 (2021). https://doi.org/10.1016/j.jece.2020.104846
 S. Xie, R.W. Alligton, J.M.J Frechet, F. Svec, Adv. Biochem Eng Biotechnol, BioMEMS, 76, 87-125 (2002). https://doi.org/10.1007/3-540-45345-83.