Process for preparing titanium dioxide mesoporous nano-belt material by solvothermal method

Abstract

The invention provides a process for preparing a titanium dioxide mesoporous nano-belt material by a solvothermal method. The process is characterized in that safe, nontoxic and cheap industrial titanium dioxide P25, a strong caustic soda aqueous solution and absolute ethyl alcohol are taken as raw materials, and then crystal structure dissociation and recombination are carried out in a concentrated alkaline environment by virtue of the P25 so as to finally obtain the titanium dioxide nano-belt. In the process, by adopting the low-boiling absolute ethyl alcohol, the needed reaction temperature is lowered, the reaction pressure is increased, the reaction time is effectively shortened and the energy consumption is reduced; and a mesopore is formed by an ion exchange technique. For the titanium dioxide mesoporous nano-belt material obtained by the process, the width is dozens of nanometers to hundreds of nanometers, the length is a few micrometers, and the mesoporous diameter is 4.6-4.8 nanometers; and the titanium dioxide mesoporous nano-belt material can be applied to fields such as solar batteries, hydrogen production based on water splitting, semiconductor components, photocatalytic degradation of organic pollutants, optical coatings and the like.

Description

technical field [0001] The invention relates to a preparation process of a titanium dioxide nanomaterial, in particular to a solvothermal preparation process of a two-dimensional titanium dioxide mesoporous nanobelt material. Background technique [0002] Nano-titanium dioxide materials have many special physical and chemical properties, and are widely used in solar cells, water splitting to produce hydrogen, semiconductor components, photocatalytic degradation of organic pollutants, optical coatings, etc. In recent years, studies on titanium dioxide materials have shown that the morphology of titanium dioxide has an important impact on its performance, and the research on some low-dimensional nanomaterials with special morphology has received extensive attention, mainly because low-dimensional nanomaterials have better properties than traditional materials. performance and potential application value. [0003] At present, the research on titanium dioxide mainly focuses on ...

AI Technical Summary

Problems solved by technology

The titanium tetrachloride used in this method fumes in humid air, generates hydrogen chloride fumes, is toxic and corrosive, and has a strong irritant; it often takes more than 36-48 hours to prepare nanoribbon materials by hydrothermal reaction of titanium dioxide particles, and The high temperature condition of 200-250°C is relatively harsh for the commonly used PTFE-lined reactor, which has potential safety hazards and high energy consumption.

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