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Preparation method of Ag0.35V2O5/TiO2 nano-composite photocatalyst

A photocatalyst and nanocomposite technology, applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., to achieve strong visible light absorption rate, cheap raw materials and equipment, and easy experimental conditions The effect of control

Inactive Publication Date: 2014-07-23
INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, there is no information about Ag 0.35 V 2 o 5 / TiO 2 Preparation of Nanocomposite Photocatalysts and Their Visible Light Catalytic Efficiencies Reported

Method used

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  • Preparation method of Ag0.35V2O5/TiO2 nano-composite photocatalyst
  • Preparation method of Ag0.35V2O5/TiO2 nano-composite photocatalyst
  • Preparation method of Ag0.35V2O5/TiO2 nano-composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) 0.5g tetrabutyl titanate, 0.2g polyvinylpyrrolidone (average molecular weight: 1300000), 0.75g absolute ethanol, 0.45g dimethylacetamide and 1.25g glacial acetic acid were mixed and fully stirred for 20min, recorded as A solution.

[0025] (2) Mix 1.2g of polyvinylpyrrolidone (average molecular weight: 1,300,000), 0.4g of vanadyl bisacetylacetonate, 0.07g of silver nitrate and 7.0g of dimethylacetamide and stir them thoroughly for 20 minutes, and record it as solution B.

[0026] (3) Mix solution A and solution B and stir thoroughly for 1 hour to obtain a uniform mixed solution of polyvinylpyrrolidone / titanate / diacetylacetonate vanadyl / silver nitrate, wherein the atomic ratio of V / Ti is 1:1.

[0027] (4) Spin the viscous polyvinylpyrrolidone / titanate / bisacetylacetonate vanadyl / silver nitrate mixed solution by electrospinning to obtain nanofibers. The specific parameters of electrospinning are as follows: The hole diameter is 0.4 mm, the distance between the bottom ...

Embodiment 2

[0030] (1) With embodiment 1.

[0031] (2) Mix 0.6g of polyvinylpyrrolidone (average molecular weight: 1300000), 0.2g of vanadyl diacetylacetonate, 0.035g of silver nitrate and 3.5g of dimethylacetamide and fully stir for 20min, which is recorded as solution B.

[0032] (3) Mix solution A and solution B and stir thoroughly for 1 hour to obtain a uniform mixed solution of polyvinylpyrrolidone / titanate / diacetylacetonate vanadyl / silver nitrate, wherein the atomic ratio of V / Ti is 1:2.

[0033] (4) with embodiment 1.

[0034] Ag obtained in this example 0.35 V 2 o 5 / TiO 2 Ag in nanocomposite photocatalysts 0.35 V 2 o 5 with TiO 2 The molar ratio is 1:4.

Embodiment 3

[0036] (1) With embodiment 1.

[0037] (2) Mix 2.4g of polyvinylpyrrolidone (average molecular weight: 1300000), 0.8g of vanadyl bisacetylacetonate, 0.14g of silver nitrate and 14.0g of dimethylacetamide and stir them thoroughly for 20 minutes, and record it as solution B.

[0038] (3) Mix solution A and solution B and stir thoroughly for 1 hour to obtain a uniform mixed solution of polyvinylpyrrolidone / titanate / diacetylacetonate vanadyl / silver nitrate, wherein the atomic ratio of V / Ti is 2:1.

[0039] (4) with embodiment 1.

[0040] Ag obtained in this example 0.35 V 2 o 5 / TiO 2 Ag in nanocomposite photocatalysts 0.35 V 2 o 5 with TiO 2 The molar ratio is 1:1.

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Abstract

The invention discloses a preparation method of an Ag0.35V2O5 / TiO2 nano-composite photocatalyst. The preparation method is characterized by comprising the following steps: (1) mixing and uniformly stirring 14 to 17 mass percent of tetrabutyl titanate, 5 to 7 mass percent of polyvinylpyrrolidone with the average molecular weight of 1300000, 20 to 25 mass percent of absolute ethyl alcohol, 10 to 15 mass percent of dimethylacetamide and 38 to 46 mass percent of glacial acetic acid to obtain polyvinylpyrrolidone / titanate solution which is marked as a solution A; (2) mixing and uniformly stirring 3 to 6 mass percent of bisacetylacetonate vanadium oxide, 0.5 to 1 mass percent of silver nitrate, 12 to 16 mass percent of polyvinylpyrrolidone with the average molecular weight of 1300000 and 79 to 84 mass percent of dimethylacetamide to obtain a solution B; (3) mixing and uniformly stirring the solution A and the solution B to obtain a mixed solution of polyvinylpyrrolidone / titanate / bisacetylacetonate vanadium oxide / silver nitrate; (4) spinning the mixed solution to obtain nano-fiber primary material by an electrospinning method, and then annealing the nano-fiber primary material in an air atmosphere to obtain the Ag0.35V2O5 / TiO2 nano-composite photocatalyst.

Description

technical field [0001] The invention relates to a method for preparing a nanocomposite photocatalyst, in particular to visible light-responsive Ag 0.35 V 2 o 5 / TiO 2 Preparation method of nanocomposite photocatalyst. Background technique [0002] In recent years, semiconductor photocatalysts have broad application prospects in air pollution control and water purification. Among many semiconductor photocatalysts, TiO 2 It has become one of the photocatalysts that has attracted much attention because of its high activity, good stability, harmlessness to the human body, long duration of action, many times of reaction, low cost, and ability to work under normal temperature and pressure. However, TiO 2 Photocatalysts have the following two major defects (Y.Wang, J.Zhang, L.Liu, C.Zhu, X.Liu, and Q.Su, Visible Light Photocatalysis of V 2 o 5 / TiO 2 Nanoheterostructures Prepared via Electrospinning, Materials Letters, 75, 95, 2012): First, TiO 2 The band gap is wide (the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/68B01J35/06
Inventor 王媛刘利新孟川民操秀霞黄元杰李绪海徐亮祝文军
Owner INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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