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A preparation method of bismuth vanadate@metal-polyphenol complex core-shell structure composite material using crude walnut green bark extract

A technology of walnut green husk and core-shell structure, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, water pollutants, etc., to achieve low energy consumption, simple operation, and strong applicability

Active Publication Date: 2020-09-29
INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention has the advantages of simple operation, low energy consumption, low cost, green and pollution-free, etc., and there is no report on this type of technology at present, and it explores a new way for the development of new materials

Method used

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  • A preparation method of bismuth vanadate@metal-polyphenol complex core-shell structure composite material using crude walnut green bark extract
  • A preparation method of bismuth vanadate@metal-polyphenol complex core-shell structure composite material using crude walnut green bark extract
  • A preparation method of bismuth vanadate@metal-polyphenol complex core-shell structure composite material using crude walnut green bark extract

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] BiVO 4 The sample preparation steps are as follows:

[0036] Step A: get the bismuth salt of 0.02mol and be dissolved in the concentrated nitric acid of 20mL to obtain homogeneous solution, stir 2 hours; Described bismuth salt is Bi(NO 3 ) 3 ·5H 2 O;

[0037] Step B: 0.02mol of vanadium-containing compound is dissolved in 20mL of 6M NaOH aqueous solution, and the vanadium-containing compound is NH 4 VO 3 ;

[0038] Step C: Add the solution obtained in Step B to the solution obtained in Step A, then add 0.1 g of cetyltrimethylammonium bromide (CTAB) to the obtained solution, stir for 2 hours, then slowly add 30 mL of 6M NaOH aqueous solution , to obtain a homogeneous suspension, stirred for 2 hours;

[0039] Step D: Add the solution obtained in step 3 into a 100mL stainless steel reaction kettle lined with polytetrafluoroethylene, keep it at 180°C for 48 hours, centrifuge the obtained product with deionized water several times, and then dry it at 60°C for 8 hours....

Embodiment 2

[0047] BiVO 4 The sample preparation steps are as follows:

[0048] Step A: get the bismuth salt of 0.02mol and be dissolved in the concentrated nitric acid of 20mL to obtain homogeneous solution, stir 2 hours; Described bismuth salt is Bi(NO 3 ) 3 ·5H 2 o 3 ;

[0049] Step B: 0.02mol of vanadium-containing compound is dissolved in 20mL of 6M NaOH aqueous solution, and the vanadium-containing compound is NH 4 VO 3 ;

[0050] Step C: Add the solution obtained in step B to the solution obtained in step A, then add 0.2 g cetyltrimethylammonium bromide (CTAB) to the obtained solution, stir for 2 hours, then slowly add 30 mL of 6M NaOH aqueous solution , to obtain a homogeneous suspension, stirred for 2 hours;

[0051] Step D: Add the solution obtained in step 3 into a 100mL stainless steel reaction kettle lined with polytetrafluoroethylene, keep it at 180°C for 48 hours, centrifuge the obtained product with deionized water several times, and then dry it at 60°C for 8 hours...

Embodiment 3

[0059] BiVO 4 The sample preparation steps are as follows:

[0060] Step A: Dissolve 0.02mol of bismuth salt in 20mL of concentrated nitric acid to obtain a uniform solution, and stir for 2 hours; the bismuth salt is BiCl 3 ;

[0061] Step B: 0.02mol of vanadium-containing compound is dissolved in 20mL of 6M NaOH aqueous solution, and the vanadium-containing compound is Na 3 VO 4 ;

[0062] Step C: Add the solution obtained in Step B to the solution obtained in Step A, then add 0.3 g of cetyltrimethylammonium bromide (CTAB) to the obtained solution, stir for 2 hours, then slowly add 30 mL of 6M NaOH aqueous solution , to obtain a homogeneous suspension, stirred for 2 hours;

[0063] Step D: Add the solution obtained in step 3 into a 100mL stainless steel reaction kettle lined with polytetrafluoroethylene, keep it at 180°C for 48 hours, centrifuge the obtained product with deionized water several times, and then dry it at 60°C for 8 hours. Get BiVO 4 sample. The purity ...

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Abstract

The invention belongs to the technical field of new materials, and relates to a preparation method for preparing a BiVO4 at metal-polyphenol complex core-shell structure composite material by utilizing a walnut green seedcase crude extracting solution. The preparation method comprises the following steps: diluting a walnut green seedcase crude extracting solution by using ultrapure water, thus preparing the walnut green seedcase crude extracting solution in certain concentration; adding a pre-prepared BiVO4 sample; finally adding metal salt, stirring at room temperature, and separating, washing and drying an obtained product, thus obtaining the BiVO4 at metal-polyphenol complex core-shell structure composite material. According to the preparation method disclosed by the invention, waste walnut green seedcase which is rich in polyphenol is machined for reutilizing, and the BiVO4 at metal-polyphenol complex core-shell structure composite material is synthesized by one-step assembling onthe surface of BiVO4 through coordination with metal ions at room temperature; the technology has the advantages that the cost is low, the method is simple, energy-saving, green and pollution-free, and the like, great waste of resource is avoided, and high-value utilization of waste biomass is also realized.

Description

technical field [0001] The invention belongs to the technical field of new materials, and relates to a method for preparing a bismuth vanadate@metal-polyphenol complex core-shell structure composite material by using crude walnut green bark extract. Background technique [0002] Nowadays, biomass is widely used to construct various functional materials, which can not only solve the environmental problems caused by waste biomass, but also meet the needs of human daily life and production. Researchers have developed a variety of high-value-added materials from biomass and its derivatives for water and air purification, energy storage, and other fields. For example, Hameed et al. showed that activated carbon prepared from coconut shells is a promising adsorbent for wastewater treatment (J. Hazard. Mater., 2008, 154, 337). Ford et al. reported the conversion of wood and cellulose solids to liquid and gaseous products (used as liquid fuels) in a single-stage reactor using a copp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/36B01J20/22B01J20/30C02F1/70C02F1/28C02F101/20C02F101/30
CPCB01J20/223B01J31/36B01J35/0086C02F1/28C02F1/281C02F1/286C02F1/70C02F2101/20C02F2101/30
Inventor 胡银陈伟吴磊王慧宾谢欣廖岩松宋卫国
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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