Method for controllable synthesis of pure phase anatase, red schorl, brookite titania nanorod

Abstract

The invention provides a method for controllably synthesizing pure phase anatase, rutile, brookite titanium dioxide nano-rod. The pure phase anatase, rutile, brookite titanium dioxide nano-rod can be controllably synthesized by controlling the reaction condition of precursor prepared by titanium dioxide powder and alkali solution through a simple hydrothermal method. The method of the invention controllably synthesizes pure phase anatase, rutile, brookite titanium dioxide nano-rod through a simple hydrothermal method at a lower temperature and under a condition without adding any surfactants or templates and has advantages of simply operation, low cost, stable performance, high purity, obvious economic benefit and social benefit which can be synthesized in a large amount.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and more specifically relates to a method for controllably synthesizing pure-phase anatase, rutile and brookite titanium dioxide nanorods. Background technique [0002] Titanium dioxide nanomaterials have important application value in solar cells, lithium-ion batteries, gas sensors, photocatalytic degradation of organic matter, etc. Traditionally, the template method and hydrothermal method are used to prepare titanium dioxide nanomaterials, and the titanium dioxide obtained by the template method Although the purity of nanomaterials is high, the preparation process is complicated, and surfactants and templates need to be added, the reaction requires high temperature, and the cost of raw materials is high; the existing hydrothermal preparation technology is currently used, although the preparation steps are simple, but the preparation The purity of titanium dioxide nanomaterials produced i...

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Problems solved by technology

[0002] Titanium dioxide nanomaterials have important application value in solar cells, lithium-ion batteries, gas sensors, photocatalytic degradation of organic matter, etc. Traditionally, the template method and hydrothermal method are used to prepare titanium dioxide nanomaterials, and the titanium dioxide obtained by the template method Although the purity of nanomaterials is high, the preparation process is complicated, and surfactants and templates need to be added, the reaction requires high temperature, and the cost of raw materials is high; the existing hydrothermal preparation technology is currently used, although the preparation steps are simple, but the preparation The purity of titanium dioxide nanomaterials produced is not enough, especially there is no related report on the controllable synthesis of pure-phase anatase, rutile, brookite titanium dioxide nanorods; It is difficult to synthesize pure phase brookite by artificial methods

Although the synthesis of phase-pure brookite-type TiO nanoparticles has been reported, brookite-type TiO nanorods have not been reported

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