Preparation method of carbon-doped TiO2 nano-fibers

Abstract

The invention provides a preparation method of carbon-doped TiO2 nano-fibers. The preparation method includes the steps that a precursor solution is prepared firstly, titanium-containing nano-fibers are prepared, the precursor solution prepared in the step a is put in a disposable plastic injector, a metal needle head with the internal diameter ranging from 0.7 mm to 0.8 mm is selected, voltage of 9-10 kV is applied, the flow of a spinning solution is set to range from 1.0 mL / h to 1.1 mL / h, the distance between a drum receiver and the needle head ranges from 13 cm to 14 cm, and the rotating speed ranges from 1,600 r / min to 1,700 r / min; finally, the carbon fibers are carbonized, the nano-fibers in the step b are placed in a vacuum oven of the temperature of 40 DEG C for 24 h, dried nano-silver films are put in a tube type resistance furnace, the temperature is raised to 520-540 DEG C at the heating rate of 10 DEG C / min, the temperature is constantly kept for 1-1.5 h, then the materials are naturally cooled to room temperature, and the carbon-doped TiO2 nano-fibers are obtained. The preparation method has the advantages that the synthesis process is simple, the reaction conditions are mild, the production cost is low, good repeatability is achieved, the absorption spectrum range of TiO2 is widened through the carbon-doped TiO2 nano-fibers, and the catalytic degradation efficiency is improved.

Description

technical field [0001] The invention relates to a material synthesis method, in particular to a carbon-doped TiO 2 Preparation methods of nanofibers. Background technique [0002] With the expansion of industrialization and large-scale production, environmental pollution, especially water pollution, has become increasingly serious, hindering the sustainable development of society; therefore, the basic theoretical research on photocatalytic effect and the development of efficient degradation catalytic materials have become the focus of scientific researchers. The photocatalytic properties of semiconductor materials were first discovered in 1972 by Japanese scientists Fujishima and Honda. There are more than 10 known photocatalytic semiconductor materials, and titanium dioxide is the most commonly used and widely studied, because it has good stability, high photocatalytic activity, non-toxicity, and high cost performance; however, TiO 2 As a photodegradation catalyst, there...

AI Technical Summary

Problems solved by technology

There are more than 10 known photocatalytic semiconductor materials, and titanium dioxide is the most commonly used and widely studied, because it has good stability, high photocatalytic activity, non-toxicity, and high cost performance; however, TiO 2 As a photodegradation catalyst, there are the following problems: the catalytic activity is directly proportional to the specific surface area of ​​the material, and the specific surface area is too large to easily lead to the agglomeration of the catalyst; to activate it