Síntesis de nanopartículas de Óxido de Magnesio con extractos de Chamaemelum Nobile para la obtención de biofertilizante

Abstract

The present research work aimed to synthesize nanoparticles of magnesium oxide (NPs-MgO) by using extracts of Chamomile (Chamaemelum nobile), to obtain a biofertilizer. The methodology consisted of four stages. The first was the preparation of chamomile extract through an infusion process, which was carried out for a 4 -hour period. The second stage consisted of the synthesis of the NPs-MgO by the use of chamomile extract and a precursor agent at different concentrations, adding movement at 100 revolutions per minute (rpm) in two different time periods, for 2 and 4 hours. Finally, after centrifuging the samples at 6000rpm, a lyophilization was carried out for the obtaining NPs-MgO in solid state. In the third stage, the characterization of NPs was performed using optical methods, such as infrared spectroscopy (FT-IR), in which a characteristic peak was obtained at the wavelength of 879.3 cm-1, which confirms the formation of NPs, ultraviolet visible spectroscopy (UV-VIS) with an absorption peak in the range of 276.93nm and scanning electron microscopy (SEM) in which the average size of the NPs-MgO was identified which was 313nm. Finally, the fourth stage consisted of a germination test, in which corn seeds were subjected to two different treatments; these consist of applying a solution with a high and low concentration of NPs, 500 and 10 parts per million (ppm) respectively, resulting in that a higher concentration of NPs favored plant growth to a greater extent, with a 52.86% increase as compared to the control group. It is recommended to carry out different drying processes of the NPs to determine their influence on the final results.