Multifunctional oil-water separating material and preparing method and application thereof

An oil-water separation and multi-functional technology, applied in the field of water treatment, can solve the problems of inability to achieve complete water purification, low utilization efficiency of solar energy restricting the application of ultraviolet photocatalysts, lack of Raman detection of pollutants, etc., to improve Raman detection Sensitivity, good recovery and reuse, and the effect of reducing preparation costs

Active Publication Date: 2019-08-09
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because titanium dioxide can only produce catalytic activity under ultraviolet light, it can only absorb ultraviolet light that accounts for a relatively low content of sunlight, and has no photoresponse under visible light, and the low utilization efficiency of solar energy limits the practical application of ultraviolet photocatalysts.
Moreover, this prior art lacks Raman detection of pollutants in the water phase, and only removes organic solvents while ignoring water-soluble pollutants, which cannot meet the requirements of complete water purification.

Method used

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  • Multifunctional oil-water separating material and preparing method and application thereof
  • Multifunctional oil-water separating material and preparing method and application thereof
  • Multifunctional oil-water separating material and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Preparation of a copper mesh integrating three functions of oil-water separation, dye detection and photodegradation

[0034] (1) Pretreatment of the copper mesh: use hydrochloric acid solution, acetone solution and deionized water to ultrasonically clean the surface impurities of the copper mesh respectively, after treatment, soak the copper mesh in 0.01M chloroauric acid solution for 1 to 2 hours and take it out The copper mesh is washed with ultrapure water to remove surface impurities to obtain a copper mesh loaded with Au / CuCl particles;

[0035] (2) Soak the copper mesh loaded with Au / CuCl particles in a 0.01M silver nitrate solution for 1 to 2 hours, then take out the copper mesh and rinse the surface of the copper mesh with ultrapure water to obtain the copper mesh with Au / AgCl particles loaded on the surface. network;

[0036] (3) Then the surface of the copper mesh is modified with perfluorodecyl mercaptan (PFDT), a low surface energy fluorine-cont...

Embodiment 2

[0039] Example 2: The oil-water mixture containing methylene blue in the water phase and Sudan red in the oil phase is first subjected to oil-water separation and dye detection

[0040] see Figure 5 , due to the super-hydrophobic and super-oleophilic properties of the surface, the Sudan III molecules in the organic solvent are separated from oil and water as the organic solvent passes through the copper mesh, and the water phase containing methylene blue molecules remains on the surface of the copper mesh to maintain a droplet shape. The volatilization of the liquid droplets is finally concentrated in a small area of ​​the noble metal hot zone, and the interference of the oil phase pollutants is finally eliminated, leaving only the Raman signal of the methylene blue molecule.

[0041] Photodegradation of the water phase after the oil-water separation of the oil-water mixture containing methylene blue in the water phase and Sudan Red in the oil phase. Under the irradiation of...

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Abstract

The invention discloses a preparing method of a multifunctional oil-water separating material. The preparing method includes the following steps of S1, preprocessing a copper net to remove impuritieson the surface; S2, soaking the preprocessed copper net in a chloroauric acid solution for 1-2 hours to obtain a copper net loaded with Au / CuCl particles; S3, soaking the copper net obtained in the step S2 in a silver salt solution for 1-2 hours to obtain a copper net loaded with Au / AgCl particles on the surface; S4, modifying the surface of the copper net obtained in the step S3 through the PFDTto obtain the multifunctional oil-water separating material. The invention further discloses the multifunctional oil-water separating material prepared through the method and application of the material. The prepared multifunctional oil-water separating material can separate an oil-water mixture, can also detect low-concentration pollutants in oil-water mixed liquid and can effectively conduct photolysis on the pollutants.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a multifunctional oil-water separation material and its preparation method and application. Background technique [0002] In recent years, oil-water separation materials based on surface wettability have attracted much attention, and materials with surface super-wettability have been widely used in oil-water separation. The main basis for the realization of oil-water separation is that the material interface has opposite wettability to the oil phase and the water phase. Among them, super-hydrophobic and super-oleophilic interface materials are a type of oil-water separation materials that are currently being studied. Its main preparation strategy is to construct a rough micro-nano structure and low surface chemical energy modification on the surface of the substrate. When the oil-water mixture contacts the super-hydrophobic and super-oleophilic substrate, the oil phase ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022C02F1/30
CPCB01D17/02C02F1/30
Inventor 程丝徐澄曹蕴哲
Owner SUZHOU UNIV
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