Synthesis and Characterization of TiO2 Nanoparticles by Green Chemistry, Using Aloe Vera

Titanium oxide nanoparticles were synthesized by green chemistry technique, using aloe vera extract, titanium chloride (2 M, TiCl4) in 1000 mL of ultra-pure water, where aloe vera extract was added drop by drop and kept with constant agitation of 400 rpm, having a pH similar to 7 with HCl or NaOH. The synthesis product was recovered by centrifugation (10,000 rpm) and washed repeatedly with absolute ethanol. The nanoparticles were washed again with ultra-pure water and dried at 100 degrees C for 7 h, at the end of drying, a fine white powder was obtained which was characterized by X-ray diffraction, where it was determined that the anatase phase (TiO2) was obtained, so it has a tetragonal structure, with cell parameters of a = 3.79 angstrom, c = 9.51 angstrom. From the synthesis product nanoparticles of sizes ranging from 2 to 30 nm have been obtained, this was confirmed by transmission electron microscopy.