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Preparation method of hexagonal cerium vanadate nanodisk and use thereof

A technology of cerium vanadate and nano disks, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of large energy consumption, environmental pollution, etc., and achieve good performance, high degradation effect, and good photocatalytic efficiency. Effect

Inactive Publication Date: 2015-03-25
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation methods of vanadate usually adopt high-temperature solid-phase method, microwave method, high-temperature hydrothermal method, etc., which not only need to consume a lot of energy but also cause certain pollution to the environment.

Method used

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  • Preparation method of hexagonal cerium vanadate nanodisk and use thereof
  • Preparation method of hexagonal cerium vanadate nanodisk and use thereof
  • Preparation method of hexagonal cerium vanadate nanodisk and use thereof

Examples

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Effect test

Embodiment 1

[0024] A preparation method of a hexagonal cerium vanadate nanodisc, comprising the steps of:

[0025] (1)K 2 (H 2 O) 10 h 2 V 10 o 28 4H 2 Preparation of O(potassium decavanadate)

[0026] Accurately weigh 5.163g of ammonium metavanadate and join in the water of 200ml, stir until it dissolves, then add 3.223g of disodium hydrogen phosphate (Na 2 HPO 4 ), adjust the pH to about 5, and then react the mixed solution at 120°C for 5 hours; after filtering, add 3.709g of potassium chloride (KCl) and boil for 30 minutes, filter while hot and volatilize and crystallize to obtain orange-yellow potassium decavanadate crystals .

[0027] (2) Preparation of hexagonal cerium vanadate nanodisks

[0028] (a) Accurately weigh 0.065 g CeCl 3 ·5H 2 0 was added to 75ml of deionized water, and after stirring at room temperature for 5 minutes, 0.103g of potassium decavanadate prepared in the above 1 was added, stirred and mixed to obtain a mixed solution;

[0029] (b) pH of the solu...

Embodiment 2

[0032] (1)K 2 (H 2 O) 10 h 2 V 10 o 28 4H 2 Preparation of O(potassium decavanadate)

[0033] According to the preparation steps of potassium decavanadate in example 1;

[0034] (2) Preparation of hexagonal cerium vanadate nanodisks

[0035] (a) Accurately weigh 0.065g of CeCl 3 ·5H 2 0 was added to 75ml of deionized water, and after stirring at room temperature for 5 minutes, 0.103g of potassium decavanadate prepared in the above 1 was added, stirred and mixed to obtain a mixed solution;

[0036] (b) pH of the solution is measured with a pH meter, and the NaOH solution of 2M is added dropwise to adjust the pH of the solution to be 9;

[0037] (c) Transfer the solution to a 100ml autoclave with polytetrafluoroethylene, place it in an oven, carry out a hydrothermal reaction, react at a temperature of 120°C for 24h, centrifugally filter, wash with water and ethanol alternately for 3 times, and obtain the sample in Dry in a constant temperature drying oven at 60°C for ...

Embodiment 3

[0039] (1)K 2 (H 2 O) 10 h 2 V 10 o 28 4H 2 Preparation of O(potassium decavanadate)

[0040] According to the preparation steps of potassium decavanadate in example 1;

[0041] (2) Preparation of hexagonal cerium vanadate nanodisks

[0042] (a) Accurately weigh 0.065g of CeCl 3 ·5H 2 0 was added to 75ml of deionized water, and after stirring at room temperature for 5 minutes, 0.103g of potassium decavanadate prepared in the above 1 was added, stirred and mixed to obtain a mixed solution;

[0043] (b) pH of the solution is measured with a pH meter, and the NaOH solution of 2M is added dropwise to adjust the pH of the solution to be 9;

[0044](c) Transfer the solution to a 100ml autoclave with polytetrafluoroethylene, place it in an oven, carry out a hydrothermal reaction, react at a temperature of 140°C for 24h, centrifugally filter, wash with water and ethanol alternately for 3 times, and obtain the sample in Dry in a constant temperature drying oven at 60°C for 1...

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Abstract

The invention discloses a preparation method of a hexagonal cerium vanadate nanodisk and use thereof. The preparation method comprises two steps: preparation of K2(H2O)10H2V10O28.4H2O and preparation of the hexagonal cerium vanadate nanodisk. The hexagonal cerium vanadate nanodisk obtained has a good photocatalytic efficiency by well absorbing ultraviolet light. By modifying the material by using a methanol solution of perfluorodecyl triethoxysilane, the nanodisk further shows a good performance in super-hydrophobic aspect. The hexagonal cerium vanadate nanodisk disclosed by the invention has a very high degradation effect on Rhodamine B, is an excellent photocatalyst and meanwhile further has a good performance in super-hydrophobic aspect.

Description

technical field [0001] The invention relates to a preparation method and application of a cerium vanadate nanodisc, belonging to the technical field of inorganic nanomaterial preparation technology. Background technique [0002] my country is the country with the richest rare earth resources in the world. Due to its unique structure, rare earth elements have optical, electrical, magnetic, and thermal properties that many other elements do not have. They can be used in high-tech fields such as aerospace technology, medicine and health. In recent years, with the continuous development of science and technology, rare earth nanomaterials have been widely used in daily life, so the synthesis and properties of new rare earth compound nanomaterials have become a new field. [0003] Rare earth vanadate has potential application prospects in light-emitting diodes, displays, biological probes, nano-optoelectronic devices, zero-threshold lasers and other fields. In recent years, rare e...

Claims

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Application Information

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IPC IPC(8): C01G31/00B82Y30/00B82Y40/00
CPCC01G31/00B82Y30/00B82Y40/00C01P2004/24C01P2004/64
Inventor 李涛海杨效娟左文丽李凤
Owner XIANGTAN UNIV