Process for preparing carbon-doped titanium dioxide hollow microsphere

Abstract

The invention discloses a process for preparing a carbon-doped titanium dioxide hollow microsphere. The process comprises the following steps of: weighing titanous sulfate, ferrocene and potassium nitrate in sequence, wherein the weight ratio of the titanous sulfate to the ferrocene to the potassium nitrate is 1:(0.1-0.2):(0.1-0.25); adding to distilled water; stirring at room temperature; and then performing ultrasonication to obtain mixed liquid; putting the mixed liquid in a self-generated pressure hydrothermal reaction kettle, and performing a constant temperature hydrothermal reaction at the temperature of 160-180 DEG C; naturally cooling the mixed liquid after reaction to room temperature; and then, filtering, washing and drying a kettle substrate to obtain brown carbon-doped titanium dioxide hollow microsphere powder. The process for preparing the carbon-doped titanium dioxide hollow microsphere has the characteristics that the whole flow operation is simple; the production cost is lower; the feasibility is higher; and the industrial quantity production photocatalysis can be easily realized. During the preparation process, a hydrolysis, decomposition and doping three-in-one synthesis strategy is realized by adopting a one-step method, thereby, the abuses that the experimental flow steps are multiple, high temperature is required and the requirements on a preparation instrument are high when carbon is doped with titanium dioxide at present are effectively eliminated.

Description

technical field [0001] The invention relates to the field of engineering nanomaterials, in particular to a preparation process of carbon-doped titanium dioxide hollow microspheres. Background technique [0002] At present, the preparation of hollow microspheres generally adopts the template method, layer-by-layer self-assembly technology, emulsification method and high-temperature smelting method, etc., each of which has its own advantages and disadvantages, such as: [0003] (1) Using the template method, the preparation process is easy to control and the yield is high, but additional organic templates need to be added, and post-processing often requires high-temperature calcination to remove the organic templates; [0004] (2) Using layer-layer self-assembly technology, the morphology of the product can be precisely controlled, but the preparation process is time-consuming; [0005] (3), adopt the emulsification method, the particle size of the product is relatively unifo...

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Problems solved by technology

[0004](2) Using layer-by-layer self-assembly technology, the morphology of the product can be precisely controlled, but the preparation process is time-consuming;

[0005] (3), using the emulsification method, the particle size of the product is relatively uniform and the purity is high, but the preparation process is difficult to control, and the product preparation is not easy to repeat, which is not conducive to industrial production;

[0006] (4) The high-temperature smelting method has high production efficiency, but it requires high temperature and consumes energy, which is not conducive to industrial production