Preparation method of carbon-modified zinc-doped titanium dioxide nanofiber small-sheet photocatalyst

• Main Authors: LU YING, QIN XIANGGE, HONG JINZHONG
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2023
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention provides a preparation method of a carbon-modified zinc-doped titanium dioxide nanofiber chip photocatalyst, which comprises the following steps: drying zinc acetate dihydrate to remove crystal water, dissolving butyl titanate and zinc acetate in absolute ethyl alcohol and glacial acetic acid solvents, adding polyvinylpyrrolidone, and generating faint yellow transparent sol at room temperature; carrying out electrostatic spinning on the obtained sol, calcining a nanofiber membrane in air, and then naturally cooling to room temperature; dispersing the calcined nano-fiber small pieces into an absolute ethyl alcohol and deionized water solution, adding dimethylformamide and glacial acetic acid for hydrothermal reaction, and calcining and carbonizing in protective gas to obtain the carbon-modified zinc-doped titanium dioxide nano-fiber small piece photocatalyst. The photocatalytic efficiency of anatase titanium dioxide is improved through zinc doping and carbon modification, meanwhile, the depositio