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Titanium dioxide hierarchical nanostructure induced by carbon quantum dots and its preparation method

A technology of carbon quantum dots and titanium dioxide, which is applied in the field of titanium dioxide hierarchical nanostructure materials and its preparation, can solve the problems of unfriendly environment, time-consuming and laborious, cumbersome operation, etc., and achieve the effect of uniform shape, unique structure and simple process

Active Publication Date: 2021-10-12
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional template synthesis route is not only time-consuming and labor-intensive due to cumbersome operations, but also has high cost, low efficiency, and is not friendly to the environment.

Method used

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  • Titanium dioxide hierarchical nanostructure induced by carbon quantum dots and its preparation method
  • Titanium dioxide hierarchical nanostructure induced by carbon quantum dots and its preparation method
  • Titanium dioxide hierarchical nanostructure induced by carbon quantum dots and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A. Synthesis of carbon quantum dots (refer to M.H. WU, ET Al ., Chem. Commun ., 2010, 46, 3681-3683.)

[0024] a. Put 1.0 G ethylenediamine tetracetate (EDTA-2NA) in tube furnace, N 2 The thermal treatment of 300 ° C under the atmosphere was 2 h, and the temperature rate rate was 2 ° C / min, which was carbon quantum dots;

[0025] b. Take 50 mg of carbon quantum dot powder, add 10 mL to ion water, and configure a solution concentration of 5 mg / mL.

[0026] B. Preparation of carbon dioxide-induced nano structures induced

[0027] a. After mixing 30 ml of isopropanol and 10 mL of ethylene glycol, then 0.65 ml of divinite stirring

[0028] Uniform;

[0029] b. Weigh 50 mg Tioso 4 Add 1 ml of deionized water to the solution obtained to step a.

[0030] Continue to stir well;

[0031] c. Add a carbon quantum point solution having a 1 ml concentration of 5 mg / ml to the above mixed solution B, continuously stirred 1 h;

[0032] d. Transfer the reaction after the solution to 1...

Embodiment 2

[0037] The preparation process and step of the present embodiment is substantially the same as that of Example 1, and the C Steps which differ from the carbon quantum dot induced titanium dioxide:

[0038] The concentration of the carbon quantum dot solution was 1 mg / ml.

[0039] The resulting results have a significant difference in morphology in the form of Example 1, and the resulting product is uneven, the particle size is about 260 nm, exhibiting a loose spherical structure consisting of small particles.

Embodiment 3

[0041] The preparation process and step of the present embodiment is substantially the same as that of Example 1, and the C Steps which differ from the carbon quantum dot induced titanium dioxide:

[0042] The carbon quantum dot solution concentration was 10 mg / ml.

[0043] The resulting results have a significant difference in Example 1, and the product shape is extremely irregular, and the grading nanostructure is not observed.

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Abstract

The invention relates to a titanium dioxide hierarchical nanostructure material induced by carbon quantum dots and a preparation method thereof. The present invention uses titanyl sulfate as the titanium source, isopropanol and ethylene glycol as a mixed solvent, adopts a simple hydrothermal synthesis method, and under the alkaline conditions provided by diethylenetriamine, prepares TiO2 nanomaterials with uniform morphology and good crystallization were obtained. The obtained product is a typical anatase crystal phase, has a hierarchical nanostructure formed by the assembly of obvious nanosheets, and its spherical particle size is 350-400 nm. The titania nanomaterial with hierarchical structure prepared by this method has potential application prospects in the fields of new energy, nanocatalysis and biomedicine.

Description

Technical field [0001] The present invention relates to a carbon quantum dot induced titanium dioxide hierarchical nanostructure material and a preparation method thereof. Background technique [0002] Since 1972 by Fujishima et al, titanium dioxide (Tio 2 ) After the photocatalytic decomposition of water under ultraviolet light, TiO 2 Because of its unique physical chemical properties, such as environmentally friendly, chemical stability is highly used in gas monitoring, environmental pollutant governance and energy storage and transformation. However, the reaction kinetics of the lower conductance and hysteresis of titanium dioxide have severely obstructed their in-depth applications. [0003] Studies have shown that the structural parameters such as morphology, size, and crystallinity of nanomaterials will have a remarkable effect on their performance. Therefore, in order to improve and improve the performance of titanium dioxide, more and more research is dedicated to designi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053B82Y40/00
CPCB82Y40/00C01G23/0532C01P2004/24C01P2004/32C01P2004/45C01P2004/61
Inventor 张海娇高燕萍
Owner SHANGHAI UNIV