Preparation method and application of ferrihydrite/mesocrystal TiO2

• Main Authors: CAI MENGDIE, CHEN FANG, SUN SONG, WEI YUXUE, ZHOU WENJIE
• Format: Patent
• Language: Chinese; English
• Published: 12.01.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a ferrihydrite/mesocrystal TiO2 preparation method and application, and the ferrihydrite/mesocrystal TiO2 preparation method comprises the following steps: dissolving FeCl3. 6H2O and NaAc in ethylene glycol, stirring, storing, cooling to obtain a black precipitate, centrifuging, washing and drying the black precipitate to obtain black nano Fe3O4; the method comprises the following steps: adding Fe (NO3) 3.9 H2O into a reaction container, stirring, adding black nano Fe3O4, stirring, adding NaOH to adjust pH, stirring, adding distilled water, aging, washing with water, and drying to obtain magnetic ferrihydrite; the preparation method comprises the following steps: mixing TiF4, H2O, NH4NO3 and NH4F to prepare a precursor solution, dripping the solution on a silicon chip, heating, calcining and preserving heat to obtain powder, calcining the powder in O2/Ar atmosphere, and grinding to obtain mesocrystal TiO2; and carrying out ultrasonic treatment on the mesocrystal TiO2, adding the magnet