Method for synthesizing titanium dioxide/graphene nano composite material
A nano-composite material, titanium dioxide technology, applied in the field of nano-composite material preparation, can solve the problems of high equipment requirements, long time consumption, poor dispersion, etc., and achieve the effect of simple and feasible synthesis process, low equipment requirements, and high degree of reduction
Inactive Publication Date: 2016-08-31
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
View PDF4 Cites 11 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] At present, the preparation methods of titanium dioxide / graphene nanocomposites include hydrothermal / solvothermal method, solution mixing method, in-situ growth method, electrochemical deposition method, atomic layer deposition method, etc., and these methods can obtain titanium dioxide / graphene nanocomposites. Composite materials, however, these methods either require high equipment, or the preparation process is complicated, or takes a long time, or even the quality of the prepared composite material is not good, such as poor uniformity, poor dispersion or low degree of reduction of graphene, resulting in poor performance of the composite material. obvious
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0023] Example 1 ： The titanium dioxide / graphene nanocomposite material is prepared according to the synthesis method proposed by the invention.
[0024] (1) Graphene oxide was synthesized by the improved Hummer method, and titanium dioxide P25 produced by Degussa Company was used as the composite material component. The P25 surface is electronegativity determined by the Zeta potential test of the P25 aqueous solution. Add a certain amount of P25 powder (the mass ratio of P25 and graphene oxide in this example is 100) to the vigorously stirred ultrasonically treated aqueous solution of graphene oxide, continue to stir for 15 min and then ultrasonically treat it for 15 min. The solution was transferred to the stirrer again and continued to stir vigorously, and the cationic polyelectrolyte polyethyleneimine was added dropwise to the mixed solution (the concentration of polyethyleneimine in this example was 1 mg / mL). Under the action of electrostatic attraction, P25 The P25 / ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method for synthesizing a titanium dioxide / graphene nano composite material. The method comprises the following steps: (1) determining surface electrical properties of titanium dioxide (TiO2); (2) determining a TiO2 / graphene oxide modification procedure according to the TiO2 surface electrical properties; (3) carrying out static self-assembling on TiO2 and graphene oxide to form the titanium dioxide / graphene nano composite material; (4) carrying out ultraviolet irradiation on a TiO2 / graphene oxide solution under stirring and N2 aeration conditions; (5) washing the sample subjected to the ultraviolet irradiation and lyophilizing; and (6) carrying out microwave irradiation on the lyophilized sample to obtain the TiO2 / graphene nano composite material. The TiO2 / graphene nano composite material prepared by the method can keep the original shape of the material very well and has relatively good dispersity; and graphene oxide can also be reduced to a certain extent, so that the performance of the nano composite material can be improved. The method has very wide commonality and the prepared material has wide application prospect.
Description
technical field [0001] The invention belongs to a method for preparing a nanocomposite material, in particular to a method for compounding two nanomaterials of titanium dioxide and graphene. The nanocomposite material has broad application prospects in the fields of environment, energy and the like. Background technique [0002] Compared with conventional materials, nanomaterials have characteristics such as surface and interface effects, small size effects, quantum size effects, and macroscopic quantum tunneling effects, which lead to nanomaterials showing peculiar physical and chemical properties. Combining two nanomaterials with different properties to prepare nanocomposites with new properties through physical or chemical methods has become a research hotspot today, because nanocomposites take the strengths of each material or complement each other or even produce synergistic effects. The comprehensive properties of nanocomposites are superior to those of the original co...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18
CPCB01J21/18B01J35/399B01J35/39
Inventor 付明来陈建炜杨佳诚苑宝玲
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI