Preparation method of mesoporous metal oxide semiconductor composite fiber

A preparation method of a mesoporous metal oxide semiconductor composite fiber comprises the following steps: preparing a metal oxide electrostatic spinning precursor solution, taking a certain amount of metal salt, a macromolecular template agent and polyvinylpyrrolidone, dissolving in a mixed solution of N, N-dimethylformamide and ethanol, and carrying out electrostatic spinning to obtain the mesoporous metal oxide semiconductor composite fiber. And continuously stirring at normal temperature for 1 hour to form a uniform and transparent electrostatic spinning solution. Performing electrostatic spinning on the electrostatic spinning solution to prepare mesoporous metal oxide nanofibers, collecting the metal oxide fibers, putting the metal oxide fibers into a drying oven at 70 DEG C, curing for 24 hours, and then calcining at 350 DEG C in a nitrogen atmosphere and 500 DEG C in an air atmosphere in sequence to promote crystallization and remove a template agent, so as to obtain the mesoporous metal oxide nanof