Unlock instant, AI-driven research and patent intelligence for your innovation.
Preparation method and application of a biomimetic lithium ion imprinted membrane with catechol/chitosan as interface adhesion layer
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A catechol and interface adhesion technology is applied in the field of preparation of biomimetic lithium ion imprinted membranes, which can solve the problems of high cost of biomimetic ion imprinted adhesion layers, and achieve good chemical stability, good selective adsorption capacity, and regeneration. strong effect
Active Publication Date: 2022-04-08
NORTHEAST DIANLI UNIVERSITY +1
View PDF4 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0004] The purpose of the present invention is to solve the problem of the high cost of the existing bionic ion imprinted adhesive layer, and provide a kind of preparation method and the application
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
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment approach 1
[0032] Specific embodiment one: In this embodiment, a method for preparing a biomimetic lithium ion imprinted membrane using catechol / chitosan as an interface adhesion layer is completed according to the following steps:
[0033] 1. Preparation of PVDF-CA / CS membrane:
[0034] ①. Clean the PVDF membrane to obtain the cleaned PVDF membrane;
[0035] ②. Immerse the cleaned PVDF membrane in NaAC solution, and then add NaIO 4 solution, chitosan solution, and catechol solution, and then stirred and reacted in a water bath. After the reaction was completed, the PVDF membrane was taken out, rinsed with deionized water, and dried to obtain a PVDF-CA / CS membrane;
[0036] 2. Preparation of biomimetic lithium ion imprinted membrane with CA / CS as interface adhesion layer:
[0037] ①. Add LiCl and 12-crown-4 into acetonitrile, and then stir to obtain a mixed solution;
[0038] ②. Immerse the PVDF-CA / CS membrane into the mixed solution, then add azobisisobutyronitrile, ethylene glycol d...
specific Embodiment approach 2
[0039] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the diameter of the PVDF membrane described in step one (1) is 47 mm, and the thickness is 0.45 μ m; first use deionized water in step one (1) to rinse the PVDF membrane for 3 times to 5 times, and then use absolute ethanol to wash the PVDF membrane 3 times to 5 times to obtain the PVDF membrane after washing. Other steps are the same as in the first embodiment.
specific Embodiment approach 3
[0040] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the concentration of the NaAC solution described in step one (2) is 50mmol / L~70mmol / L, NaIO 4 The concentration of the solution is 20mmol / L-30mmol / L, the concentration of the chitosan solution is 10g / L-20g / L, and the concentration of the catechol solution is 1g / L-2g / L. Other steps are the same as those in Embodiment 1 or 2.
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
Property
Measurement
Unit
diameter
aaaaa
aaaaa
thickness
aaaaa
aaaaa
concentration
aaaaa
aaaaa
Login to View More
Abstract
A preparation method and application of a biomimetic lithium ion imprinted membrane using catechol / chitosan as an interface adhesion layer, which relates to a preparation method and application of a biomimetic lithium ion imprinted membrane. The purpose of the present invention is to solve the problem of high cost of the existing biomimetic ion imprinted adhesive layer. Methods: 1. Preparation of PVDF‑CA / CS film; 2. Preparation of a biomimetic lithium ion imprinted film with CA / CS as the interface adhesion layer; a biomimetic lithium ion imprinted film with catechol / chitosan as the interface adhesion layer Ion imprinted membrane for the adsorption of Li + . A biomimetic lithium ion imprinted membrane with catechol / chitosan as the interface adhesion layer prepared by the present invention has good selective adsorption capacity for lithium ions, and has the characteristics of strong regeneration and good chemical stability . The invention can obtain a biomimetic lithium ion imprinted film with catechol / chitosan as the interface adhesion layer.
Description
technical field [0001] The invention relates to a preparation method and application of a bionic lithium ion imprinted membrane. Background technique [0002] Lithium, as an important metal, has a huge impact on human society and has been widely used in the production of lithium-ion batteries in recent years. Lithium-ion batteries are the most common rechargeable batteries in electronic products, including mobile phones, computers, electric vehicles, etc. Although natural lithium resources widely exist in salt lake water and natural ores, judging from the current consumption rate, natural lithium resources are not enough to meet the global demand for lithium. Therefore, rapid and efficient separation and recovery of lithium from waste lithium-ion batteries has become the frontier of scientific research in this field. [0003] At present, the common ways to separate and recover lithium from waste lithium-ion batteries mainly include chemical methods, extraction methods and ...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More