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Preparation method and application of Cu2MoS2O4/Ag2V4O11/g-C3N4 ternary composite catalyst

A ternary composite, g-c3n4 technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of small specific surface area, limited photocatalytic performance, Narrow photoresponse range and other issues, to achieve the effect of enhanced light absorption intensity, simple and convenient preparation method, and low cost

Pending Publication Date: 2021-12-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, g-C 3 N 4 The wide band gap (2.7 eV), small specific surface area, and narrow visible light response range greatly limit its photocatalytic performance.

Method used

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  • Preparation method and application of Cu2MoS2O4/Ag2V4O11/g-C3N4 ternary composite catalyst
  • Preparation method and application of Cu2MoS2O4/Ag2V4O11/g-C3N4 ternary composite catalyst
  • Preparation method and application of Cu2MoS2O4/Ag2V4O11/g-C3N4 ternary composite catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Cu 2 MoS 2 o 4 Preparation of:

[0039] Under magnetic stirring, 0.6621 g of (NH 4 ) 6 Mo 7 o 24 12H 2 O was dissolved in 80 mL of distilled water, followed by the addition of 4.6 g of Na 2 S, stirring continuously until clear yellow. Adding HCl dropwise produces a brown substance with a pungent odor. When the pH was adjusted to 7, after stirring for 15 min, 4.6375 g of Cu (NO 3 ) 2 ·3H 2 O, stir until uniform and then condense and reflux at 70 °C for 10 h, collect the obtained samples and wash with water and absolute ethanol several times, and dry at 60 °C for 12 h, and grind;

[0040] (2) Ag 2 V 4 o 11 / g -C 3 N 4 Preparation of binary composites:

[0041] AgNO 3 Dissolve in 10 mL of distilled water to obtain solution A; the concentration is 1.2 mmol / L, under magnetic stirring at 40 ℃, NH 4 VO 3 Dissolved in 50 mL of distilled water to form a light yellow clear solution, which was regarded as solution B with a concentration of 2.4 mmol / L. Sol...

Embodiment 2

[0052] (1) Cu 2 MoS 2 o 4 Preparation of:

[0053] Under magnetic stirring, 0.8 g of (NH 4 ) 6 Mo 7 o 24 12H 2 O was dissolved in 120 mL of distilled water, followed by the addition of 5.2 g of Na 2 S, stirring continuously until clear yellow. Addition of HCl dropwise produced a brown material. When the pH was adjusted to 8, after stirring for 30 min, 5 g of Cu(NO 3 ) 2 ·3H 2 O, stir until uniform and then condense and reflux at 70 °C for 11 h, collect the obtained samples and wash with water and absolute ethanol several times, and dry at 80 °C for 18 h, and grind;

[0054] (2) Ag 2 V 4 o 11 / g -C 3 N 4 Preparation of binary composites:

[0055] AgNO 3 Dissolve in 20 mL of distilled water to obtain solution A; the concentration is 3 mmol / L, under magnetic stirring at 50 ℃, NH 4 VO 3 Dissolved in 40 mL of distilled water to form a light yellow clear solution, which was regarded as solution B with a concentration of 6 mmol / L. Solution A was added to solutio...

Embodiment 3

[0061] (1) Cu 2 MoS 2 o 4 Preparation of:

[0062] Under magnetic stirring, 0.7 g of (NH 4 ) 6 Mo 7 o 24 12H 2 O was dissolved in 100 mL of distilled water, followed by the addition of 5 g of Na 2 S, stirring continuously until clear yellow. Addition of HCl dropwise produced a brown material. When the pH was adjusted to 6, after stirring for 20 min, 4.2 g of Cu(NO 3 ) 2 ·3H 2 O, stir until uniform and then condense and reflux at 65 °C for 9 h, collect the obtained samples and wash with water and absolute ethanol several times, dry at 70 °C for 14 h, and grind;

[0063] (2) Ag 2 V 4 o 11 / g -C 3 N 4 Preparation of binary composites:

[0064] AgNO 3 Dissolve in 15 mL of distilled water to obtain solution A; the concentration is 2 mmol / L, under magnetic stirring at 40 ℃, NH 4 VO 3 Dissolved in 60 mL of distilled water to form a light yellow clear solution, which was regarded as solution B with a concentration of 4 mmol / L. Solution A was added to solution B t...

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Abstract

The invention discloses a preparation method and an application of a Cu2MoS2O4 / Ag2V4O11 / g-C3N4 ternary composite catalyst. The catalyst is prepared from the following raw materials in parts by weight: 1 to 10 parts of Cu2MoS2O4, and 10 parts of Ag2V4O11 / g-C3N4. The preparation method comprises the following steps: (1) preparing Cu2MoS2O4; (2) preparing an Ag2V4O11 / g-C3N4 binary composite material; and (3) preparing the Cu2MoS2O4 / Ag2V4O11 / g-C3N4 ternary composite catalytic material. The Cu2MoS2O4 / Ag2V4O11 / g-C3N4 ternary photocatalyst is synthesized through a wet impregnation method, the operation is convenient and fast, the cost is low, and the Cu2MoS2O4 / Ag2V4O11 / g-C3N4 ternary photocatalyst has a good effect on organic wastewater and has a good prospect in actual production and commercial application.

Description

technical field [0001] The present invention relates to a Cu 2 MoS 2 o 4 / Ag 2 V 4 o 11 / g -C 3 N 4 A preparation method and application of a three-way composite catalyst belong to the technical field of catalyst preparation and application. Background technique [0002] The production of printing and dyeing wastewater is an inevitable hazard in the development of modern industries such as textiles and papermaking. Printing and dyeing wastewater has strong toxicity, high chroma, and is difficult to degrade under natural conditions. Therefore, its treatment process has always been concerned by researchers. Photocatalytic technology stands out from various treatment technologies with its environmental protection, low cost and no secondary pollution. [0003] Graphite carbon nitride (g-C 3 N 4 ) is a widely used semiconductor photocatalytic material with cheap and easy-to-obtain raw materials, low production cost, visible light activity, and high chemical and thermal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/68B01J27/051B01J27/24B01J35/00C02F1/30C02F101/30
CPCB01J23/682B01J27/051B01J27/24C02F1/30C02F2305/10C02F2101/308B01J35/39
Inventor 李育珍王晓爽夏云生谭思洋李鑫王少杰易思远
Owner TAIYUAN UNIV OF TECH
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