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Three-dimensional flower-shaped titanic acid material formed by assembling lamelleted nanosheets and synthesizing method of three-dimensional flower-shaped titanic acid material

A layered nano, three-dimensional flower-like technology, applied in nanotechnology, titanium compounds, nanotechnology, etc., can solve the problems of unfavorable photogenerated charge transport and separation, limit the synthesis and application of titanic acid, and affect the catalytic performance of materials, etc., to achieve high Prospect of commercial application, stable product structure and high yield

Active Publication Date: 2014-11-12
重庆市化工研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both approaches rely on the precursor TiO 2 At the same time, these methods generally obtain nanoparticles with no specific shape, different sizes, and more impurities, which are not conducive to the transmission and separation of photogenerated charges, resulting in the recombination of electron and hole pairs. , affecting the catalytic performance of the material, limiting the synthesis and application of titanic acid

Method used

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  • Three-dimensional flower-shaped titanic acid material formed by assembling lamelleted nanosheets and synthesizing method of three-dimensional flower-shaped titanic acid material
  • Three-dimensional flower-shaped titanic acid material formed by assembling lamelleted nanosheets and synthesizing method of three-dimensional flower-shaped titanic acid material
  • Three-dimensional flower-shaped titanic acid material formed by assembling lamelleted nanosheets and synthesizing method of three-dimensional flower-shaped titanic acid material

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Experimental program
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Effect test

Embodiment 1

[0029] Add 1.00g of P123 into a 100mL beaker, place the beaker on a magnetic stirrer, add 36.75mL of acetic acid to raise the temperature to 40°C, and stir until completely dissolved. Add 1.00mL of TBT into the beaker, stir to dissolve and then stop stirring to obtain a white milky product. The above emulsion was left to stand for 2 hours to continue the reaction, and the obtained white emulsion solution was transferred to a 50mL reaction kettle, and placed in a thermostat at 150°C for 24 hours. After cooling, the white precipitate solution was suction-filtered, filtered and washed repeatedly with ethanol, and the obtained white precipitate was dried at 60° C. for 24 hours to obtain a three-dimensional flower-like titanic acid material assembled from layered nanosheets with a yield of 30%.

[0030] figure 1 The SEM image of the three-dimensional flower-shaped titanic acid material prepared in this embodiment, figure 2 The HRTEM figure of the layered nanosheets in the three-...

Embodiment 2

[0032] Add 1.00g of P123 into a 100mL beaker, place the beaker on a magnetic stirrer, add 36.75mL of acetic acid to raise the temperature to 40°C, and stir until completely dissolved. Add 1.00mL of TBT into the beaker, stir to dissolve and then stop stirring to obtain a white milky product. The above emulsion was left to stand for 24 hours to continue the reaction, and the obtained white emulsion solution was transferred to a 50mL reaction kettle, and placed in a 150°C thermostat for 24 hours. After cooling, the white precipitate solution was suction-filtered, filtered and washed repeatedly with ethanol, and the obtained white precipitate was dried at 60°C for 24 hours to obtain a three-dimensional flower-like titanic acid material assembled from layered nanosheets with a yield of 28%.

[0033] image 3 The SEM image of the three-dimensional flower-like titanic acid material assembled by layered nanosheets prepared for this example, Figure 4 For the TEM picture of the three...

Embodiment 3

[0035] Add 1.00g of P123 into a 100mL beaker, place the beaker on a magnetic stirrer, add 36.75mL of acetic acid to raise the temperature to 40°C, and stir until completely dissolved. Add 1.00mL of TBT into the beaker, stir to dissolve and then stop stirring to obtain a white milky product. The above emulsion was allowed to stand for 96 hours of continuous reaction, and the obtained white emulsion solution was transferred to a 50 mL reaction kettle, and placed in a thermostat at 150°C for 24 hours. After cooling, the white precipitate solution was suction-filtered, filtered and washed repeatedly with ethanol, and the obtained white precipitate was dried at 60° C. for 24 hours to obtain a three-dimensional flower-like titanic acid material assembled from layered nanosheets with a yield of 35%.

[0036] Figure 5 The SEM image of the three-dimensional flower-like titanic acid material assembled by layered nanosheets prepared for this example, Image 6 In order to prepare the H...

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Abstract

The invention discloses a three-dimensional flower-shaped titanic acid material formed by assembling lamelleted nanosheets which are diverged outwards from the structure center. The length of each lamelleted nanosheet ranges from 100 nm to 600 nm, and the thickness of each lamelleted nanosheet ranges from 10 nm to 15 nm. Each lamelleted nanosheet has six to ten layers, and the interlamellar spacing of each lamelleted nanosheet ranges from 0.5 nm to 1.5 nm. The invention further discloses a method for synthesizing the three-dimensional flower-shaped titanic acid material, TBT serves as a silicon source, acetic acid serves as solvent, P123 serves as a stabilizer, tetra-n-butyl titanate serves as a titanium source, and the three-dimensional flower-shaped titanic acid material is synthesized through solvothermal reaction. The synthesizing method is simple, the three-dimensional flower-shaped titanic acid material does not depend on the crystal form and the size of raw materials, the product structure is stable, the productivity is high, and dispersion is even.

Description

technical field [0001] The invention relates to a three-dimensional flower-like titanic acid material assembled from layered nanosheets and a synthesis method thereof, belonging to the technical field of material synthesis. Background technique [0002] Due to their unique layered structure, layered compounds not only provide microreactors for many chemical reactions, but also serve as basic units for other substances. Layered titanic acid is an important n-type semiconductor belonging to TiO 2 Derivatives, similar in nature to TiO 2 Similar and both are semiconductor materials. Titanate nanosheets have a typical two-dimensional structure, which is derived from the exfoliation of the layered precursor, thus maintaining the orthorhombic crystal structure of the precursor and the negative charge of the laminate. Because of its unique physical, chemical and optical properties, it has been widely used in research and application, including photoelectric conversion, magneto-op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00B82Y40/00B82Y30/00
Inventor 周国伟陈奉娇李艳敬
Owner 重庆市化工研究院有限公司
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