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Method for preparing nanometer titanate with controllable appearances by utilizing industrial raw materials

A technology of titanate and raw materials, which is applied in the field of preparing various titanates with controllable morphology, achieving the effect of low cost and excellent physical and chemical properties

Inactive Publication Date: 2010-02-10
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on the prepa

Method used

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  • Method for preparing nanometer titanate with controllable appearances by utilizing industrial raw materials
  • Method for preparing nanometer titanate with controllable appearances by utilizing industrial raw materials
  • Method for preparing nanometer titanate with controllable appearances by utilizing industrial raw materials

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Embodiment Construction

[0078] The following takes an autoclave with a volume of 50ml as an example to illustrate the preparation steps of various titanate nanostructures, see figure 1 .

[0079] 1. Preparation of titanate nanobelts

[0080] (1) Weigh 1-3 g of metatitanic acid and put it into an autoclave.

[0081] (2) Prepare a NaOH solution with a molar concentration of 9-11 M, and add 35-40 ml into the autoclave.

[0082] (3) Magnetically stir the raw materials in the autoclave for 1-2 hours to form a uniform white suspension.

[0083] (4), put the autoclave into the environment of 170~220 ℃, keep warm for more than 20 hours;

[0084] (5), after the reaction is over, after the temperature of the kettle is naturally lowered to room temperature, the autoclave is opened and the solution is poured out.

[0085] (6), filter or centrifuge to separate the precipitate, wash with water several times until the pH of the solution is neutral.

[0086] (7) The precipitate is dried to obtain the product. ...

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Abstract

The invention provides a method for preparing nanometer titanate with controllable appearances by utilizing industrial raw materials. The method comprises the following steps: utilizing industrial rawmaterials of meta-titanic acid and titanyl sulfate which are cheap as raw materials; putting and forcefully stirring the raw materials and an alkaline solution with a molar concentration of 2-11 M inan autoclave to form a uniform suspension; and putting the autoclave in environment with the temperature of 40-220 DEG C and keeping the temperature of the autoclave for longer than 3 hours. The preparation of the nanometer titanate with the controllable appearances comprises the preparation of a one-dimensional structure: a nanometer strip, i.e. a nanometer titanate strip with controllable crimpness (a tube if being fully coiled), the preparation of a two-dimensional structure: a nanometer sheet and the preparation of three-dimensional structures: a semen sterculiae lychnophorae structure, asea urchin structure and a staged micro-nano structure. The method adopts the industrial raw materials to prepare the nanometer titanate with the controllable appearances so as to have lower cost andenter industrialized production, and the nanometer titanate with the controllable appearances have various nanometer effects, such as quantum size, small size, surface effect, and the like, present more excellent physicochemical characteristics and have particularly higher application values in aspects of catalysis, adsorption, and the like than a block material.

Description

Technical field: [0001] The invention relates to a method for preparing titanates with various shapes controllable by utilizing industrial raw materials. Background technique: [0002] Inorganic titanates have excellent physical, chemical and optical properties, and occupy an important position in the field of contemporary material science. Titanate products have important application value in the fields of electronics, energy and environmental protection, and can be widely used in piezoelectric ceramic devices, pyroelectric infrared sensors, ferroelectric memories, electro-optical switching devices, barium titanate-based PTC components, gas Sensors, materials for hydrogen production by photolysis of water, materials for lithium-ion secondary batteries, materials for gasoline desulfurization and dye decolorization, and radar absorbing materials, etc. [0003] Due to various nano-effects such as quantum size, small size, and surface effects, nano-titanate exhibits more excel...

Claims

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Application Information

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IPC IPC(8): C01G23/00
Inventor 张玉刚张立德张俊喜卢芳
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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