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Preparation method of TiO2 quantum dot nano-material and relevant products

A nanomaterial and quantum dot technology, which is applied in the field of preparation of TiO2 quantum dot nanomaterials, can solve the problems of fast reaction rate, large product particle size, and the product purity cannot be well guaranteed, and achieves uniform particles and simple preparation process. Effect

Inactive Publication Date: 2017-03-22
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the main advantages of the solid-phase method are: economy, simple process and equipment, but high energy consumption; and the solid-phase reaction is not sufficient, so the purity of the product cannot be well guaranteed. In addition, because the solid-phase method generally requires high temperature Calcination, the obtained product generally has large particle size and uneven distribution, so the solid-phase method is only suitable for situations where the requirements for product purity and particle size are not high
The hydrothermal method has complex steps such as stirring, kettle filling, hydrothermal, centrifugation, drying, grinding, calcination, etc., and the reaction rate is fast. The reaction reagent contains strong acid to adjust the pH value, and the pressure needs to be controlled, so there is a risk of uncertainty The factors affecting growth are not as easy to control as the sol-gel method

Method used

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  • Preparation method of TiO2 quantum dot nano-material and relevant products
  • Preparation method of TiO2 quantum dot nano-material and relevant products
  • Preparation method of TiO2 quantum dot nano-material and relevant products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] TiO 2 Preparation of quantum dot nanomaterials:

[0028] 1) Infuse nitrogen gas for one minute to remove the air in the bottle, add 4ml of absolute ethanol, turn on the magnetic stirrer and slowly add 0.5ml of TiCl 4 ;

[0029] 2) Add 15ml of benzyl alcohol to it, put it in an oil bath at 80 degrees Celsius, heat up to 100 degrees Celsius, and keep the temperature constant for 5 hours;

[0030] 3) Add 50 ml of ether to the resulting solution and centrifuge at 8000 rpm for 5 minutes to collect the precipitate;

[0031] 4) Dissolve the precipitate in 20ml ethanol, and vibrate and sonicate to obtain TiO 2 Quantum dot nanomaterials.

Embodiment 2

[0033] TiO 2 Preparation of quantum dot nanomaterials:

[0034] 1) Infuse nitrogen gas for one minute to remove the air in the bottle, add 3.4ml of absolute ethanol, turn on the magnetic stirrer and slowly add 0.6ml of TiCl 4 .

[0035] 2) Add 10ml of benzyl alcohol to it, put it in an oil bath at 80 degrees Celsius, heat up to 100 degrees Celsius, and keep the temperature constant for 5 hours.

[0036] 3) Add 50 ml of ether to the resulting solution and centrifuge at 8000 rpm for 5 minutes to collect the precipitate;

[0037] 4) Dissolve the precipitate in 20ml ethanol, and vibrate and sonicate to obtain TiO 2 Quantum dot nanomaterials.

Embodiment 3

[0039] TiO 2 Preparation of quantum dot nanomaterials:

[0040] 1) Infuse nitrogen gas for one minute to remove the air in the bottle, add 3ml of absolute ethanol, turn on the magnetic stirrer and slowly add 0.5ml of TiCl 4 ;

[0041] 2) Add 10ml of benzyl alcohol to it, put it in an oil bath at 80 degrees Celsius, heat up to 120 degrees Celsius, and keep the temperature constant for 5 hours;

[0042] 3) Add 50 ml of ether to the resulting solution and centrifuge at 8000 rpm for 5 minutes to collect the precipitate;

[0043] 4) Dissolve the precipitate in 20ml ethanol, and vibrate and sonicate to obtain TiO 2 Quantum dot nanomaterials.

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Abstract

The invention relates to a preparation method of a TiO2 quantum dot nano-material and relevant products. The TiO2 quantum dot nano-material is prepared from absolute ethyl alcohol, TiCl4 and benzyl alcohol under nitrogen protection. The preparation process is simple, obtained nanometer titania particles are uniform, the size is about 10 nm, and the nanometer titania particles are the nano-material which has a catalytic characteristic and can stably exist. Prepared nanometer titania can be widely applied to multiple technical fields of catalysis, nano-energy, composites, adsorption materials and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of titanium dioxide nanomaterials, and relates to a TiO 2 Preparation method and product of quantum dot nanomaterial. Background technique [0002] Nano-titanium dioxide, the size of the particles is between 1 and 100nm, and its appearance is white loose powder. As an ideal semiconductor material, TiO 2 It has broad application prospects in solar energy storage and utilization, photochemical conversion and organic pollutant treatment. Due to the nanoscale TiO 2 Photocatalysts have the characteristics of high photocatalytic efficiency, non-toxicity and good chemical stability, and can be used for air and water purification and sterilization, as well as for the adsorption of harmful substances in the air. [0003] Mostly prepared TiO 2 The methods mainly include solid phase method, sol-gel method, hydrolysis-precipitation method, liquid phase deposition method, hydrothermal deposition metho...

Claims

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Application Information

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IPC IPC(8): C01G23/053B82Y30/00
CPCC01G23/053C01P2002/85C01P2004/03C01P2004/52C01P2004/64
Inventor 沈俊朱兴国孙泰
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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