2024/12/11 by Shaidatul Najihah Matussin, Mohammad Mansoob Khan · 1 voice
Energy · Materials Science · #Advanced Nanomaterials in Catalysis #Advanced Photocatalysis Techniques #Nanoparticles: synthesis and applications
paper · pdf · doi:10.1007/s43994-024-00206-1
openalex publication_date 2024/12/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
Abstract Green synthesis offers environmental benefits and prevents harmful by-products. This article reports on the green synthesis of cerium oxide nanoparticles (CeO 2 NPs) using aqueous leaf extract of Mangifera indica ( M. indica ) and an investigation of its photocatalytic activity. M. indica has not yet been reported to be used in the synthesis of CeO 2 NPs. CeO 2 NPs were synthesized using two different precursors; Ce(NO 3 ) 3 ·6H 2 O and CeCl 3 ·7H 2 O with two different concentrations of aqueous leaf extracts of M. indica at 80 °C. The products were analyzed using X-ray diffraction (XRD), Fourier Transform-Infrared spectroscopy (FT-IR), and field emission scanning electron microscopy (FE-SEM). The two different precursors have shown differences in the structural and morphological properties of the synthesized CeO 2 NPs. The XRD results indicated that the crystallite size was in the range from 13 to 18 nm. FT-IR detected the presence of organic functional groups on the surface of the synthesized CeO 2 NPs. The morphology and average particle size of the produced CeO 2 NPs, which ranged from 42 to 90 nm, were revealed by FE-SEM. Photocatalytic activities findings showed that CeO 2 synthesized with a low concentration of aqueous leaf extract and Ce nitrate as precursor showed the highest percentage (17–19%) of photocatalytic transformation of 4-nitrophenol to 4-nitrophenolate ion under visible light irradiation. This confirms that the amount of extract and type of anions play a critical role in the fabrication of responsive and active CeO 2 NPs. This also confirms that CeO 2 synthesized through a green synthesis method may potentially give a response for visible light irradiation activities.