Preparation method and application of lignin modified titanium carbide oil-water separation material

A technology for oil-water separation and lignin, which is applied in separation methods, chemical instruments and methods, liquid separation, etc., can solve the problems of weak anti-oxidation ability and easy to be oxidized, and achieve fast water absorption rate, good stability and low price. Effect

Pending Publication Date: 2022-01-28
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However Ti 2 CT X The antioxidant capacity is weak, and it is very easy to be oxidized during use

Method used

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  • Preparation method and application of lignin modified titanium carbide oil-water separation material
  • Preparation method and application of lignin modified titanium carbide oil-water separation material
  • Preparation method and application of lignin modified titanium carbide oil-water separation material

Examples

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Effect test

Embodiment 1

[0028] The preparation method of lignin modified titanium carbide oil-water separation material comprises the following steps:

[0029] (1) Select 1g of Ti 3 AlC 2 The powder was immersed in 20 mL of HF solution at 40 °C for 72 h with magnetic stirring. The resulting suspension was centrifuged and washed with deionized water until the pH of the supernatant reached 7.0; the obtained precipitate was dried in a vacuum oven at 60 °C for 24 h to obtain titanium carbide Ti 3 C 2 T x powder.

[0030] (2) Weigh 100mg Ti 3 C 2 T x Dispersed into 100mL deionized water to prepare Ti 3 C 2 T x Dispersion solution, add 50mg of enzymatic lignin (purchased from Shandong Changshou Password Biotechnology Co., Ltd.) and ammonia solution under stirring conditions, and Ti 3 C 2 T x Adjust the pH value of the dispersion to 8.0, then ultrasonically (100W) for 5 minutes and continue magnetic stirring for 6 hours to obtain a brownish-yellow mixture; the brownish-yellow mixture was centri...

Embodiment 2

[0034] The preparation method of lignin modified titanium carbide oil-water separation material comprises the following steps:

[0035] (1) Select 1g of Ti 3 AlC 2 The powder was immersed in 20 mL of HF solution at 40 °C for 72 h with magnetic stirring. The resulting suspension was centrifuged and washed with deionized water until the pH of the supernatant reached 7.0. The obtained precipitate was dried in a vacuum oven at 60 °C for 24 h to obtain titanium carbide Ti 3 C 2 T x powder.

[0036] (2) Weigh 100mg Ti 3 C 2 T x Disperse in 100mL of deionized water, add 100mg of enzymatic lignin and sodium hydroxide aqueous solution in sequence under stirring, adjust the pH value of the dispersion to 9.0, then ultrasonic (100W) for 5min and then magnetically stir for 6h to obtain a brown-yellow mixture; The brown-yellow mixture was repeatedly centrifuged and washed until the pH of the supernatant was 7.0, and the resulting product was freeze-dried for 24 hours and then taken...

Embodiment 3

[0039] The preparation method of lignin modified titanium carbide oil-water separation material comprises the following steps:

[0040](1) Select 1g of Ti 3 AlC 2 The powder was immersed in about 20 mL of HF solution at 40 °C and stirred with a magnetic stirring bar for 72 h. The resulting suspension was then centrifuged and washed with deionized water until the pH of the supernatant reached 7.0. The obtained precipitate was dried in a vacuum oven at 60 °C for 24 h to obtain titanium carbide Ti 3 C 2 T x powder.

[0041] (2) Weigh 100mg Ti 3 C 2 T x Add 100mL of deionized water, add 20mg of enzymatic lignin and potassium hydroxide aqueous solution sequentially under stirring conditions, adjust the pH value to 11.0, then ultrasonic (100W) for 5min and then magnetically stir for 6h to obtain a brown-yellow mixture. The brown-yellow mixture was centrifuged and washed repeatedly until the pH of the supernatant was 7.0, and the resulting product was freeze-dried for 24 hou...

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Abstract

The invention discloses a preparation method and application of a lignin modified titanium carbide oil-water separation material, and belongs to the technical field of functional material preparation. The preparation method comprises the following steps: firstly, uniformly mixing and stirring natural polymer lignin and titanium carbide Ti3C2Tx dispersion liquid, so as to insert the lignin between Ti3C2Tx layers or modify the lignin on the surfaces of the Ti3C2Tx layers and further to prepare the lignin modified Ti3C2Tx powder; and then adding the pretreated sponge into the lignin modified Ti3C2Tx dispersion liquid, conducting dipping and stirring twice, and conducting drying to obtain the lignin modified titanium carbide Ti3C2Tx oil-water separation sponge. The preparation method is simple and easy to implement, the prepared oil-water separation sponge has good hydrophilic and oleophobic properties, the material is environmentally friendly, secondary pollution to the environment is avoided, the sponge can be used as an environment-friendly functional Ti3C2Tx oil-water separation material, and a new method is provided for preparation of the functional Ti3C2Tx material.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional materials, and in particular relates to a preparation method and application of a lignin-modified titanium carbide oil-water separation material. Background technique [0002] Oil-water separation has always been the focus of international attention. With the acceleration of urbanization and the continuous improvement of industrial levels, the discharge of oily wastewater from agriculture, steel, textiles and other industries continues to increase. The frequent occurrence of marine oil spill accidents makes the massive discharge of oily wastewater not only a waste of oil resources, but also causes serious environmental problems, such as destroying the soil environment, endangering aquatic organisms, affecting the atmospheric system, etc., which will eventually threaten the ecosystem. And then endanger human health (Kang H J, Cheng Z J, Lai H, et al. Superlyophobic anti-corrosive ...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/02B01J20/30C02F1/40C02F1/28B01J20/32C02F101/32
CPCB01J20/24B01J20/0248C02F1/28C02F1/281C02F1/286B01J20/32B01J20/3242C02F2101/32
Inventor 吕秋丰刘祯晖高怡玮郑何卓艺
Owner FUZHOU UNIVERSITY
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