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Multilayer-graphene-carried titanium dioxide-ferrotitanium bimetal nanoparticles and preparation method thereof

A multi-layer graphene and titanium dioxide technology, applied in the field of materials, can solve problems such as difficulty in preparing titanium oxide nanoparticles, and achieve the effects of small particles, uniform particle distribution and uniform composite

Active Publication Date: 2017-03-22
江阴普朗克科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the preparation of cobalt and iron oxide nanoparticles, a method of forming complexes based on metal ions and then forming molecular bonds with graphene has been invented, thereby preparing metal oxide nanoparticles with good uniformity, but For the method of titanium nanoparticles, because it is difficult to form titanium complexes, it is difficult to prepare titanium oxide nanoparticles on the surface of graphene by the above method.

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  • Multilayer-graphene-carried titanium dioxide-ferrotitanium bimetal nanoparticles and preparation method thereof
  • Multilayer-graphene-carried titanium dioxide-ferrotitanium bimetal nanoparticles and preparation method thereof
  • Multilayer-graphene-carried titanium dioxide-ferrotitanium bimetal nanoparticles and preparation method thereof

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preparation example Construction

[0036] see figure 1 , which is a flowchart showing the steps of the preparation method of multilayer graphene-supported titanium dioxide nanoparticles and multilayer graphene-supported iron-titanium bimetallic nanoparticles according to an embodiment of the present invention, which includes the following steps:

[0037] S10-S30 are methods for preparing multilayer graphene-supported titanium dioxide nanoparticles. specifically,

[0038]S10, the multilayer graphene DMF solution is generated after the expanded graphite is ultrasonically oscillated in the DMF solvent. Specifically, add expanded graphite in the DMF solvent, and after ultrasonic vibration for 2-5 hours, the expanded graphite is peeled off into multilayer graphene to form a multilayer graphene DMF solution, and the quality of the expanded graphite is relative to the volume ratio of the DMF solvent. 1.67-2.78mg / ml.

[0039] S20, through the hydrolysis reaction of tetrabutyl titanate to generate titanium dioxide na...

Embodiment 1

[0047] see figure 1 , 9mlDMF and 20mg expanded graphite were mixed, and the mixed solution was ultrasonically oscillated and dispersed for 2 hours on an ultrasonic instrument to obtain the multilayer graphene solution required by the present invention. The volume of expanded graphite relative to the mixed solvent is 2.22 mg / ml. Add 0.6ml of glacial acetic acid and 20ul of distilled water to the mixed solution, and stir for 5 minutes, add 80ul of tetrabutyl titanate and stir for 30 minutes. The volume ratio of glacial acetic acid:distilled water is 30:1, the volume percentage of glacial acetic acid relative to the mixed solution is 6.7%, and the molar ratio of tetrabutyl titanate relative to the mixed solvent is 23.5mol / L. The solution after stirring is transferred in the hydrothermal reactor of 30ml, makes the filling degree of solution in the hydrothermal reactor be 30%, puts into muffle furnace, and setting reaction temperature is 120 ℃, reaction time is After 2 hours, the...

Embodiment 2

[0051] see figure 1 , 9mlDMF and 25.02mg expanded graphite were mixed, and the mixed solution was ultrasonically oscillated and dispersed for 4 hours on an ultrasonic instrument to obtain the multilayer graphene solution required by the present invention. The volume of expanded graphite relative to the mixed solvent is 2.78 mg / ml. Add 1ml of glacial acetic acid and 20ul of distilled water to the mixed solution, and stir for 5 minutes, add 200ul of tetrabutyl titanate and stir for 30 minutes. The volume ratio of glacial acetic acid:distilled water is 50:1, the volume percentage of glacial acetic acid relative to the mixed solution is 11.1%, and the molar ratio of tetrabutyl titanate relative to the mixed solvent is 58.8 mol / L. The solution after stirring is transferred in the hydrothermal reactor of 30ml, makes the filling degree of solution in the hydrothermal reactor be 40%, puts into muffle furnace, and setting reaction temperature is 130 ℃, reaction time is After 4 hours,...

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Abstract

The invention belongs to the technical field of materials, and discloses multilayer-graphene-carried titanium dioxide-ferrotitanium bimetal nanoparticles and a preparation method thereof. The preparation method comprises the following steps: carrying out ultrasonic oscillation in a DMF (N,N-dimethylformamide) solvent to generate a multilayer graphene DMF solution, carrying out hydrolysis reaction on tetrabutyl titanate to generate a titanium dioxide nano colloid, drying to obtain a dried multilayer-graphene-carried titanium dioxide nano colloid, heating to obtain multilayer-graphene-carried titanium dioxide nanoparticles, and preparing the multilayer-graphene-carried ferrotitanium bimetal oxide nanoparticles on such basis. The size of the prepared nano titanium dioxide particles on the graphene surface is less than 20nm; and the particles are distributed uniformly and have gaps, thereby providing space for depositing other oxide nanoparticles on the graphene surface. The multilayer-graphene-carried ferrotitanium bimetal oxide nanoparticles have the advantages of favorable particle crystallinity, small particle size and larger specific area.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a multilayer graphene-supported titanium dioxide, iron-titanium bimetallic nanoparticle and a preparation method thereof. Background technique [0002] Titanium dioxide has a series of advantages such as stable chemical properties, corrosion resistance, non-toxicity, high activity and dispersibility, abundant reserves, low cost and easy availability, and has always been favored by scientific researchers. Titanium dioxide is widely used in anti-ultraviolet materials, textiles, photocatalysts, self-cleaning glass, sunscreen, coatings, inks, food packaging materials, paper industry, aerospace industry, and lithium batteries. Nano-iron oxide is a multifunctional material. Nano-iron oxide particles have high surface atomic number, specific surface area and surface energy, thus exhibiting the characteristics of small size effect, quantum size effect, surface effect and ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B82Y30/00B82Y40/00
CPCB01J20/06B01J20/20B01J20/28007B82Y30/00B82Y40/00
Inventor 李强徐军明宋开新胡晓萍武军韩震廖堃吴凡姚亚
Owner 江阴普朗克科技有限公司
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