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Preparation method and application of composite material for treating synthetic dye wastewater

A technology for synthesizing dyes and composite materials, which is applied in the field of composite material preparation to achieve the effects of less pollution, energy saving, and short reaction time

Active Publication Date: 2019-03-22
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And so far there is no relevant Ag 2 MoO 4 with WO 3 Reports of composites possessing photocatalytic effects under light

Method used

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  • Preparation method and application of composite material for treating synthetic dye wastewater
  • Preparation method and application of composite material for treating synthetic dye wastewater
  • Preparation method and application of composite material for treating synthetic dye wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] a kind of Ag 2 MoO 4 The preparation method of the visible light catalytic composite material comprises the following steps (x:y=0.5).

[0039] Step 1. 1mmol ammonium tungstate (H 40 N 10 o 41 W 12 ·6H 2 (0) and 10 mmol of p-aminophenol were added to 10 ml of deionized water, and the solution was ultrasonically dispersed for about 10 min, and the solution was poured into the flask at the lower end of the serpentine condenser, stirred for 30 min, and the temperature of the water area was controlled at 60 ° C to obtain solution A .

[0040] Step 2. Weigh a certain amount of nitric acid solution, dissolve it in 30ml ethanol / water solution, the volume ratio of ethanol to deionized water is 1:10, control the pH of the solution to 5, stir until completely dissolved, and obtain solution B.

[0041] Step 3. Slowly pour solution B into solution A, stir for 3h, add 60mmol sodium dodecylbenzenesulfonate at the same time, filter the resulting suspension with suction, wash wi...

Embodiment 2

[0047] a kind of Ag 2 MoO 4 The preparation method of the visible light catalytic composite material comprises the following steps: x:y=0.1.

[0048] Step 1. 1mmol ammonium tungstate (H 40 N 10 o 41 W 12 ·6H 2 (0) and 10 mmol of p-aminophenol were added to 10 ml of deionized water, and the solution was ultrasonically dispersed for about 10 min, and the solution was poured into the flask at the lower end of the serpentine condenser, stirred for 30 min, and the temperature of the water area was controlled at 80° C. to obtain solution A .

[0049] Step 2. Weigh a certain amount of nitric acid solution, dissolve it in a solution of 30ml ethanol and water, the volume ratio of ethanol and deionized water is 1:10, control the pH of the solution to 4, stir until completely dissolved, and obtain solution B.

[0050] Step 3. Slowly pour solution B into solution A, stir for 3 hours, add 12 mmol sodium dodecylbenzenesulfonate at the same time, filter the resulting suspension with s...

Embodiment 3

[0058] a kind of Ag 2 MoO 4 The preparation method of the visible light catalytic composite material comprises the following steps: x:y=0.6.

[0059] Step 1. 1mmol ammonium tungstate (H 40 N 10 o 41 W 12 ·6H 2 (0) and 10 mmol of p-aminophenol were added to 10 ml of deionized water, and the solution was ultrasonically dispersed for about 10 min, and the solution was poured into the flask at the lower end of the serpentine condenser, stirred for 30 min, and the temperature of the water area was controlled at 60 ° C to obtain solution A .

[0060] Step 2. Weigh a certain amount of nitric acid solution, dissolve it in 30ml of ethanol / water solution, the volume ratio of ethanol to deionized water is 1:10, control the pH of the solution to 3, stir until completely dissolved, and obtain solution B.

[0061] Step 3. Slowly pour solution B into solution A, stir for 3h, add 72mmol sodium dodecylbenzenesulfonate at the same time, filter the resulting suspension with suction, wash ...

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Abstract

The invention discloses a preparation method of a composite material for treating synthetic dye wastewater, and belongs to the technical field of nano materials and photocatalytic materials. The preparation method comprises the steps that first, ammonium tungstate and p-aminophenol are prepared into an aqueous solution A; nitric acid is dissolved into an ethanol / water solution to obtain a solutionB; then the solution B is poured into the solution A, sodium dodecyl sulfate is added, and a mixture is filtered and dried to obtain powder C; then the powder C is mixed with silver nitrate and polyvinylpyrrolidone to prepare a solution D; a hydroalcoholic solution of sodium molybdate is added into the solution D, and a mixture is dried after a period of time of reaction to obtain powder E; and the powder E is calcined to obtain the composite material. According to the invention, the composite material for treating the synthetic dye wastewater is prepared by adoption of a simple chemical synthesis method, and the method has the advantages of short reaction time, energy saving and less pollution, and is suitable for large-scale production; and the prepared powder has good dispersity, largespecific surface area and uniform particle, has photocatalytic activity for methylene blue, and can be used to treat the synthetic dye wastewater.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and photocatalytic materials, and in particular relates to a preparation method and application of a metal composite material for visible light decomposition, in particular to a preparation method and application of a composite material for treating synthetic dye wastewater. Background technique [0002] Synthetic dyes are widely used in industries such as food, medicine, printing and dyeing, and cosmetics. According to statistics, the annual output of dyes in the world is about 8×10 5 ~9×10 5 Ton. About 10% to 15% of dyes will be released into the environment during the process of production and use, and most of these dyes are chemically stable. The structure is complex, and it is difficult to degrade naturally when it enters the environmental waters, which seriously damages the ecological balance of the water body. What's more serious is that most of the dyes are toxic substances, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/68C02F1/30C02F101/38
CPCC02F1/30B01J23/68C02F2101/38B01J35/39
Inventor 韩冠男李婷婷郭瑞刘宣文霍浪浪徐娟娟
Owner 东北大学秦皇岛分校
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