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Layered dual-metal hydroxide composite material as well as preparation and application thereof

A layered bimetallic, hydroxide technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, oxidized water/sewage treatment, etc., can solve the problem of reducing the number of active centers, easy agglomeration, etc. problem, to achieve the effect of simple preparation, mild synthesis conditions, and narrow avoidance of adaptability

Active Publication Date: 2018-11-13
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, LDHs materials also have shortcomings, such as easy agglomeration and reduced number of active centers, etc.

Method used

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  • Layered dual-metal hydroxide composite material as well as preparation and application thereof
  • Layered dual-metal hydroxide composite material as well as preparation and application thereof
  • Layered dual-metal hydroxide composite material as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of hydrothermal carbon / layered double metal hydroxide composite material of the present invention, its specific preparation method comprises the following steps:

[0030] (1) After washing and drying 9g of biomass wood powder raw material, put it into the autoclave, add 75mL of ultrapure water and mix well. The reaction kettle was kept stably at 180°C for 18 hours. After cooling to room temperature, it was filtered with suction, washed with water, and dried to obtain hydrothermal charcoal.

[0031] (2) Prepare 30mL containing 500mmol / L Cu 2+ Solution A and 15mL containing 250mmol / L Cr 3+ solution B, and prepare another 10mL solution C containing 1000mmol / L NaOH. Add the above-prepared solution A to solution B, and slowly add solution C to the above mixture, and add 1%, 5% and 10% mass ratio of hydrothermal charcoal, and magnetically stir for 1 hour to ensure that the reaction is complete.

[0032] (3) The obtained reaction solution is then transferred into a h...

Embodiment 2

[0035] A kind of hydrothermal carbon / layered double metal hydroxide composite material is used for removing drug class pollutant sulfamethazine in water environment, comprises the following steps:

[0036] The stock solution of 500 mg / L was diluted and prepared to obtain a concentration of 5 mg / L sulfamethazine, and 100 mL was taken in conical flasks respectively. When adding the hydrothermal charcoal / layered double metal hydroxide composite material prepared in 0.5g / L embodiment one, adding volume percent concentration is 30% H 2 o 2 Solution 2mL, placed in a constant temperature oscillator under dark conditions and stirred evenly, the reaction temperature was controlled at 25°C during the degradation treatment, and the treated water after the Fenton-like reaction was sampled according to a certain time interval, and filtered through a 0.22μm After membrane filtration, the residual concentration of the reacted solution was analyzed by ultra-high performance liquid chromatogr...

Embodiment 3

[0038] A hydrothermal carbon / layered double metal hydroxide composite material is used to remove endocrine disruptor estriol in water environment, comprising the following steps:

[0039] The 500 mg / L stock solution was diluted to obtain a concentration of 2 mg / L estriol, and 100 mL was taken in conical flasks. When adding the hydrothermal charcoal / layered double metal hydroxide composite material prepared in 0.5g / L embodiment one, adding volume percent concentration is 30% H 2 o 2 Solution 2mL, placed in a constant temperature oscillator under dark conditions and stirred evenly, the reaction temperature was controlled at 25°C during the degradation treatment, and the treated water after the Fenton-like reaction was sampled according to a certain time interval, and filtered through a 0.22μm After membrane filtration, the residual concentration of the reacted solution was analyzed by ultra-high performance liquid chromatography (UPLC). The results showed that the degradation ...

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Abstract

The invention relates to a layered dual-metal hydroxide composite material as well as preparation and application thereof. The preparation method of the composite material comprises the following steps: firstly, preparing hydrothermal carbon from biomass; then, loading a layered composite metal hydroxide on the surface of the hydrothermal carbon through a hydrothermal synthesis method; performingsimple solid-liquid separation, washing and drying to obtain the layered dual-metal hydroxide composite material. The hydrothermal carbon / layered dual-metal hydroxide composite material prepared withthe method can construct a Fenton-like reaction system with H2O2, so that the aim of effectively degrading pollutants such as medicaments, personal-care supplies, endocrine disrupters and organic dyesin a water environment is fulfilled. The hydrothermal carbon / layered dual-metal hydroxide composite material is a composite material catalyst which has the advantages of easiness in preparation, mildreaction conditions, high utilization efficiency, low cost and large application potential.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a layered double metal hydroxide composite material and its preparation and application. Background technique [0002] Emerging pollutants such as endocrine disruptors, drugs, and personal care products have attracted widespread attention in recent years. Due to their hydrophobic characteristics, they are easy to accumulate in organisms, thereby interfering with the normal physiological functions of organisms in the environment to a certain extent. At present, emerging organic pollutants with a concentration of ng / L-μg / L have been detected in the surface and groundwater environments of many countries and regions. May produce other by-products that may directly or indirectly affect human health. At the same time, the relevant wastewater treatment of such pollutants also lacks effective advanced treatment technology. [0003] In recent years, the advanced catalytic oxida...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/86C02F1/72C02F101/30C02F101/38
CPCB01J23/868C02F1/722C02F1/725C02F2101/308C02F2101/38C02F2101/40
Inventor 朱志良俞家楠仇雁翎张华
Owner TONGJI UNIV
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