عنوان
Plant-based synthesis of ceria nanoparticles and its catalytic activity
نویسنده (گان)
Elahi,Behrouz;Mirzaee,Mahdi;Darroudi,Majid;Kazemi oskuee,Reza;Sadri,Kayvan ;Dolati,Hanieh
چکیده مقاله
Nanotechnology is a new and emerging technology with the wealth of applications. Green synthesis route is highly relevant as it is nontoxic, decreasing/completely eliminating the use and generation of substances hazardous to human health and the environment. The biological process is a bottom-up method and green route which it uses plant, fungus, biopolymer, bacteria and, algae in the synthesis process. These materials contain some biochemical components acting as capping and/or stabilizing agents in the synthesis process. Cerium oxide is rare in the earth crust and it has wide band gap. CeO2 nanomaterials have used in a wide range of applications, such as catalyst, gas sensors, polishing materials, solid oxide fuel cells, optical devices, and, etc. Here, cerium oxide nanoparticles have been synthesized in Falcaria Vulgaris leaf extract by sol-gel method. They were characterized by some physical and chemical methods such as XRD, UV-Vis spectroscopy, FT-IR, and FE-SEM. The XRD pattern confirmed the formation of cerium oxide nanoparticles with average size 19.5 nm estimated by Scherrer equation. Due to investigating of catalytic properties of synthesized nanoparticles, dye degradation of methylene blue in the presence of sodium borohydride was done. The results showed that the rate of degradation increased when cerium oxide nanoparticles were added to the solution of 8 ppm methylene blue and sodium borohydrid. Dye was degraded 90% after 3 hours; however, the same solution and condition with any nanoparticles was degraded 60%.

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