Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rare earth element-doped layered composite metal hydroxide and preparation and application thereof

A hydroxide, layered composite technology, applied in metal/metal oxide/metal hydroxide catalyst, chemical/physical process, oxidized water/sewage treatment, etc. , suitable for problems such as narrow pH range, to achieve the effect of simple preparation and good environmental adaptability

Active Publication Date: 2019-02-01
TONGJI UNIV
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing layered composite metal hydroxides have disadvantages such as slow rate, narrow applicable pH range, and large amount of iron sludge in the purification process of organic pollution in water bodies, which cannot meet the treatment of large-flow sewage.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation and application of a layered composite metal hydroxide doped with rare earth elements can be realized through the following steps:

[0026] (1) Prepare 200mL of solution A, which contains 7.5mmol·L -1 Cu 2+ , 22.5mmol·L -1 Ni 2+ , 14.25mmol·L -1 Fe 3+ and 0.75mmol·L -1 La 3+ , prepare another 100ml of solution B, which contains 0.5mol·L -1 NaOH and 0.1mol L -1 Na 2 CO 3 .

[0027] (2) Pour the above-mentioned configured solution A and solution B into the burette respectively, and slowly add it dropwise to a beaker containing 100mL of ultrapure water and react under vigorous stirring to obtain a mixed solution. The pH value of the solution was kept at 7±0.2 to control the dropping rate until the solution A was added dropwise. The mixed solution obtained from the reaction was stirred for 1 h, then placed in an oven for aging at 40° C. for 24 hours, and then filtered for solid-liquid separation, and the obtained solid precipitate was washed thre...

Embodiment 2

[0031] The preparation and application of a layered composite metal hydroxide doped with rare earth elements can be realized through the following steps:

[0032] (1) Prepare 200mL of solution A, which contains 7.5mmol·L -1 Cu 2+ , 22.5mmol·L -1 Ni 2+ , 13.5mmol·L -1 Fe 3+ and 1.5mmol·L -1 La 3+ , prepare another 100ml of solution B, which contains 0.5mol·L -1 NaOH and 0.1mol L -1 Na 2 CO 3 .

[0033](2) Pour the above-mentioned configured solution A and solution B into the burette respectively, and slowly add it dropwise to a beaker containing 100mL of ultrapure water and react under vigorous stirring to obtain a mixed solution. The pH value of the solution was kept at 8±0.2 to control the dropping rate until the solution A was added dropwise. The mixed solution obtained from the reaction was stirred for 1 h, then placed in an oven for aging at 60° C. for 24 hours, then filtered for solid-liquid separation, and the obtained solid precipitate was washed three times...

Embodiment 3

[0037] The preparation and application of a layered composite metal hydroxide doped with rare earth elements can be realized through the following steps:

[0038] (1) Prepare 200mL of solution A, which contains 7.5mmol·L -1 Cu 2+ , 22.5mmol·L -1 Ni 2+ , 13.5mmol·L -1 Fe 3+ and 1.5mmol·L -1 La 3+ , prepare another 100ml of solution B, which contains 0.5mol·L -1 NaOH and 0.1mol L -1 Na 2 CO 3 .

[0039] (2) Pour the above-mentioned configured solution A and solution B into the burette respectively, and slowly add it dropwise to a beaker containing 100mL of ultrapure water and react under vigorous stirring to obtain a mixed solution. The pH value of the solution was kept at 9±0.2 to control the dropping rate until the solution A was added dropwise. The mixed solution obtained from the reaction was stirred for 1 h, then placed in an oven for aging at 50° C. for 36 hours, and then filtered for solid-liquid separation, and the obtained solid precipitate was washed three ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a rare earth element-doped layered composite metal hydroxide and a preparation and an application thereof. While preparing, a solution containing Cu<2+>, Ni<2+>, Fe<3> and La<3> and a mixed solution of sodium carbonate and sodium hydroxide are subjected to a coprecipitation reaction, and subjected to steps of aging, filtration, drying and the like to obtain the rare earthelement-doped material based on layered composite metal hydroxide. The material is reacted with low-dose hydrogen peroxide to release a single-line oxygen, hydroxyl, superoxide radical and other reactive oxygen radicals, and florfenicol, phenol, ibuprofen and other organic pollutants in the water are oxidized to achieve efficient degradation of pollutants in water. Compared with the prior art, themethod synthesizes the novel lanthanum-doped copper-based layered composite metal hydroxide, which can effectively remove organic pollutants in the water in a wide pH range, avoids the disadvantagesof narrow pH range and generation of iron filings in the traditional Fenton reaction, and has the advantages of convenient preparation, low dosage, and high utilization efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of sewage purification, in particular to a layered composite metal hydroxide doped with rare earth elements and its preparation and application. Background technique [0002] In recent years, with the acceleration of the industrialization process, various organic pollutants have entered the environment due to a large amount of industrial wastewater and domestic sewage not meeting the discharge standards, posing a great threat to the safety of drinking water. Among them, all kinds of drugs including antibiotics, endocrine disruptors, pesticides and other organic pollutants are frequently detected in the environment. For example, florfenicol, as one of the allowed veterinary antibiotics, has been widely used, leading to the enhancement of bacterial resistance, and the residual concentration level in the environment is getting higher and higher, seriously threatening human health and safety. Therefore, explori...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J23/83C02F1/72C02F101/30
CPCB01J23/002B01J23/83B01J2523/00C02F1/725C02F2101/30B01J2523/847B01J2523/842B01J2523/17B01J2523/3706
Inventor 朱志良陈婷仇雁翎
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com