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Titanium dioxide/graphene nanocomposite, and normal-temperature preparation method and application thereof

A nanocomposite material, graphene composite technology, applied in chemical instruments and methods, chemical/physical processes, photosensitive equipment, etc., can solve heating and other problems, and achieve the effects of low energy consumption, good stability, and simple preparation methods

Inactive Publication Date: 2015-10-28
SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problem that toxic reducing agents are used in the existing preparation methods for preparing titanium dioxide / graphene composites, and the reduction process requires heating, the purpose of the present invention is to provide a titanium dioxide / graphene composite material, a normal temperature preparation method and its application
The method of the present invention can be operated experimentally at room temperature to prepare titanium dioxide / graphene composites

Method used

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  • Titanium dioxide/graphene nanocomposite, and normal-temperature preparation method and application thereof
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  • Titanium dioxide/graphene nanocomposite, and normal-temperature preparation method and application thereof

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Experimental program
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Embodiment 1

[0039] 1. Weigh raw materials: the mass ratio of graphite oxide to ethanol is 1:300, the mass ratio of graphite oxide to sodium borohydride and tetrabutyl titanate is 1:2:300, and the mass ratio of tetrabutyl titanate to hydrolysis inhibitor (ice Acetic acid) mass ratio is 1:0.3, tetrabutyl titanate and deionized water mass ratio is 1:0.3;

[0040] 2. The graphite oxide weighed according to step 1 is in ethanol, and ultrasonically dispersed for 0.5 hours to obtain a graphene oxide suspension, which is magnetically stirred at room temperature;

[0041] 3. Add the sodium borohydride weighed in step 1 to the graphene oxide suspension in step 2, stir magnetically for 20 hours at room temperature, wash the resulting solution with ethanol, dissolve the filter cake with ethanol to obtain graphene dispersion liquid;

[0042] 4. Add the tetra-n-butyl titanate weighed in step 1 to the graphene dispersion obtained in step 3 and magnetically stir for 2 hours, then add a hydrolysis inhib...

Embodiment 2

[0046] 1. Weigh raw materials: the mass ratio of graphite oxide to ethanol is 1:500, the mass ratio of graphite oxide to sodium sulfide and tetrabutyl titanate is 1:0.5:300, tetrabutyl titanate and hydrolysis inhibitor (36.7wt % hydrochloric acid) mass ratio is 1:0.2, tetrabutyl titanate and deionized water mass ratio is 1:0.1;

[0047] 2. The graphite oxide weighed in step 1 is dispersed in isopropanol by ultrasonic dispersion for 0.5 hours to obtain a graphene oxide suspension, which is magnetically stirred at room temperature;

[0048] 3. Add the sodium borohydride weighed in step 1 to the graphene oxide suspension in step 2, stir magnetically for 30 hours at room temperature, wash the resulting solution with ethanol, dissolve the filtered filter cake with isopropanol to obtain graphite olefin dispersion;

[0049] 4. Add the tetrabutyl titanate weighed in step 1 to the graphene dispersion obtained in step 3 and stir magnetically for 2 hours, then add a hydrolysis inhibito...

Embodiment 3

[0053] 1. Weigh raw materials: the mass ratio of graphite oxide to ethanol is 1:800, the mass ratio of graphite oxide to sodium borohydride and titanium sulfate is 1:0.5:300, titanium sulfate and hydrolysis inhibitor (30wt%H 2 SO 4 ) mass ratio is 1:0.3, titanium sulfate and deionized water mass ratio is 1:0.2;

[0054] 2. The graphite oxide weighed according to step 1 is in ethanol, and ultrasonically dispersed for 1 hour to obtain a graphene oxide suspension, which is magnetically stirred at room temperature;

[0055] 3. Add the sodium borohydride weighed in step 1 to the graphene oxide suspension in step 2, stir magnetically for 30 hours at room temperature, wash the resulting solution with ethanol, dissolve the filter cake with ethanol to obtain graphene dispersion liquid;

[0056] 4. Add the titanium sulfate weighed in step 1 into the graphene dispersion obtained in step 3 and stir it magnetically for 4 hours, then add a hydrolysis inhibitor (30wt%H 2 SO 4 ), after 20...

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Abstract

The invention discloses a titanium dioxide / graphene nanocomposite, and a normal-temperature preparation method and application thereof. According to the invention, a titanium source and graphite oxide are used as starting raw materials, an organic solvent is used as a reaction solvent, and the nanocomposite formed by compounding of titanium dioxide nanometer rods and graphene is obtained through normal temperature reduction and hydrolysis; and in the nanocomposite, graphene accounts for 1 to 30 wt%, with the rest being titanium dioxide. The preparation method provided by the invention has the advantages of simple process, easy preparation, mild reaction conditions, etc. In the prepared nanocomposite, titanium oxide is uniformly distributed on the surface of graphene, so the nanocomposite can be perfectly applied to the field of photocatalysis of photoelectric materials.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation and application, in particular to a titanium dioxide / graphene nanocomposite material, a normal temperature preparation method and its application. Background technique [0002] Titanium dioxide (TiO 2 ) is an important stable and environmentally friendly photocatalytic material. It also has very high chemical stability, thermal stability, non-toxic, super-hydrophilic, non-migratory, and can be in contact with food. Conversion, dielectric materials, sensors, lithium batteries, solar cells, coatings, cosmetics, catalysts, photocatalytic degradation and other fields have important application prospects. [0003] The titanium dioxide material has a high lithium intercalation potential, no SEI film is formed during the first charge and discharge process, and the energy conversion efficiency is high; the titanium dioxide material does not appear metal lithium or alloys during the charg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18H01G9/20
Inventor 吴俊星吴子华谢华清朱月琴
Owner SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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