Bibliographic citations
Valle, E., (2024). Propiedades físicas de nanopartículas de óxido de manganeso sintetizadas usando extractos de hojas de guanábana, matico, laurel rosa, achiote y nimbo a diferentes concentraciones [Universidad Nacional de Trujillo]. https://hdl.handle.net/20.500.14414/22717
Valle, E., Propiedades físicas de nanopartículas de óxido de manganeso sintetizadas usando extractos de hojas de guanábana, matico, laurel rosa, achiote y nimbo a diferentes concentraciones []. PE: Universidad Nacional de Trujillo; 2024. https://hdl.handle.net/20.500.14414/22717
@misc{renati/1043942,
title = "Propiedades físicas de nanopartículas de óxido de manganeso sintetizadas usando extractos de hojas de guanábana, matico, laurel rosa, achiote y nimbo a diferentes concentraciones",
author = "Valle Rivera, Eiser",
publisher = "Universidad Nacional de Trujillo",
year = "2024"
}
Abstract The synthesis and characterization of manganese oxide nanoparticles was carried out using extracts of fresh rose laurel (ELR), matico (EM), soursop (EG), nimbus or neem (EN), annatto (EA) leaves. Four different concentrations of extract were used for each plant, with the aim of evaluating the effect of the concentrations on the physical and optical properties of the nanoparticles. The X-ray diffraction (XRD) results showed the formation of Mn3O4, where the effect of the concentration of EA and EN was noticeable on the crystallinity of the nanoparticles. With the UV-vis-NIR spectroscopy data (reflectance) and the Tauc line, the band gap was obtained. For the nanoparticles obtained with EM and EN, the band gap decreases with increasing extract concentration. The Raman spectroscopy results confirm the formation of Mn3O4 nanoparticles with the entire extract, and there is also a shift to the left of the A1g mode with respect to the bulk material. The photoluminescence (FL) spectroscopy results show six emission bands, indicating that the material has oxygen vacancies and defects. The results of Fourier transform infrared spectroscopy (FTIR) confirmed the formation of Mn3O4, and other bands were obtained that are attributed to vibrations of functional groups present in the extracts. Through transmission electron microscopy (TEM) and dynamic light scattering (DLS) it was confirmed that the material tends to agglomerate
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