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Composite material for visible light catalysis, preparation method thereof and application thereof in water treatment

A composite material and visible light technology, which is applied in special compound water treatment, light water/sewage treatment, energy wastewater treatment, etc., can solve the problems of difficult post-processing, unfavorable recycling and repeated use, and achieve the reduction of synthesis steps and operation difficulty, Realize the effect of catalytic performance and high utilization rate

Inactive Publication Date: 2017-05-31
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the photocatalysts developed by researchers are tiny particles of micro-nano size. The small size makes post-processing difficult, which is not conducive to recycling and reuse.

Method used

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  • Composite material for visible light catalysis, preparation method thereof and application thereof in water treatment
  • Composite material for visible light catalysis, preparation method thereof and application thereof in water treatment
  • Composite material for visible light catalysis, preparation method thereof and application thereof in water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]Preparation of bismuth oxyiodide oxide nanosheet-loaded metal nickel foam composite (Ni foam@BiOI): Dissolve 0.02 mmol of bismuth nitrate pentahydrate and 0.02 mmol of potassium iodide in 10 mL of absolute ethanol solution at room temperature, respectively, and denoted as solution A 1 and solution B 1 , put A 1 Solution and B 1 The solution was mixed and stirred for 30 minutes, then transferred to a 25 mL hydrothermal reactor, and 50 mg of metallic nickel foam was added to the reactor, and reacted at 180 °C for 12 h. After the reaction was finished, the reactor was naturally cooled to room temperature and then opened. The metal nickel foam was clamped out with tweezers, rinsed twice with deionized water and 95% ethanol respectively, and dried in a vacuum oven for 6 h to obtain Ni foam@BiOI. figure 1 It is the scanning electron microscope image of BiOI supported on nickel foam, and the inset in the upper left corner is the scanning electron microscope image of uncompos...

Embodiment 2

[0034] Preparation of bismuth oxyiodide nanorod-supported metal nickel foam composite (Ni foam@BiOI): At room temperature, 0.02 mmol of bismuth nitrate pentahydrate and 0.02 mmol of potassium iodide were dissolved in 10 mL of ethylene glycol, respectively, and recorded as Solution A 2 and solution B 2 , put A 2 Solution and B 2 The solution was mixed and stirred for 30 minutes, then transferred to a 25 mL hydrothermal reactor, and 50 mg of metallic nickel foam was added to the reactor, and reacted at 180 °C for 12 h. After the reaction was finished, the reactor was naturally cooled to room temperature and then opened. The metal nickel foam was clamped out with tweezers, rinsed twice with deionized water and 95% ethanol respectively, and dried in a vacuum oven for 6 h to obtain Ni foam@BiOI. figure 2 It is the SEM image of BiOI supported on nickel foam.

Embodiment 3

[0036] Bismuth oxyiodide / bismuth oxychloride binary composite loaded metal nickel foam composite (Ni foam@BiOI 0.5 Cl 0.5 ) preparation: Weigh 0.02 mmol of bismuth nitrate pentahydrate and dissolve it in 10 mL of absolute ethanol, denoted as A 3 ; Weigh 0.01 mmol potassium iodide and 0.01 mmol potassium chloride and dissolve in 10 mL absolute ethanol solution and record it as solution B 3 , put A 2 Solution and B 2 The solution was mixed and stirred for 30 minutes, then transferred to a 25 mL hydrothermal reaction kettle, and then 50 mg of metal nickel foam was added to the reaction kettle, and reacted at 180 °C for 12 h. After the reaction, the reactor was naturally cooled to room temperature and opened, and the metal nickel foam was clamped out with tweezers, rinsed twice with deionized water and 95% ethanol respectively, and dried in a vacuum oven for 6 h to obtain Ni foam@BiOI 0.5 Cl 0.5 , with image 3 Is BiOI 0.5 Cl 0.5 SEM images of Ni foam loaded on it.

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Abstract

The invention discloses a composite material for visible light catalysis, a preparation method thereof and an application thereof in water treatment. A macroscopic visible light catalysis composite material is synthesized through a one-pot method, and the composite material can degrade and remove organic matters (such as organic dyestuff) in a water body. Specifically, firstly the one-pot method and a solvothermal method are firstly adopted to directly synthesize bismuth oxyiodide or bismuth oxyiodide / bismuth oxychloride to be loaded on a metallic nickel foam composite material through binary composite photocatalysis, and the composite material can be synthesized only by one step. The simple and convenient synthetic method greatly lowers the process difficulty and cost of synthesis, and provides possibility for further industrial promotion. Under the visible light, the composite material can realize high-efficiency removal of molecules of organic pollutants in the water body; and under the macroscopic condition of catalyzing light with a micro-nano size, the composite material takes advantage of the excellent conductivity of nickel foam to improve the overall performance of the composite material, and is convenient to recycle and reuse in use, thereby improving the comprehensive processing capacity of the material and prolonging the service life.

Description

technical field [0001] The invention belongs to the technical field of inorganic-metal composite materials, and in particular relates to a macro-sized composite material with visible light catalytic degradation performance synthesized by a one-pot method, a preparation method thereof and an application in water treatment. Background technique [0002] As a new environmental protection and energy-saving treatment technology, semiconductor photocatalysis technology has been widely concerned in the treatment of dye wastewater. Photocatalysis technology uses sunlight, an inexhaustible natural energy source, to greatly reduce the cost of dye wastewater treatment. Therefore, this This kind of photocatalytic technology with green environmental protection, low cost and mild conditions has a good development prospect in dye wastewater. At present, various photocatalysts are divided into photocatalysts responding to ultraviolet light (wavelength <400 nm) and photocatalysts respondi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/06C02F1/30C02F101/30
CPCC02F1/30B01J27/06C02F2305/10C02F2101/30C02F2101/308B01J35/39Y02W10/37
Inventor 路建美李娜君蒋军
Owner SUZHOU UNIV
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