Unlock instant, AI-driven research and patent intelligence for your innovation.

Recyclable mesoporous TiO2 adsorbent with adjustable surface electrical property as well as preparation method and application thereof

An adsorbent and mesoporous technology, which is applied in the field of preparation of mesoporous TiO2 adsorbents, can solve problems such as adsorbent damage, and achieve the effects of many adsorption sites, high yield, and easy operation in the preparation process.

Active Publication Date: 2021-02-23
SOUTHEAST UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a mesoporous TiO that can be recycled and has adjustable surface electrical properties 2 The preparation method of adsorbent and its application, to solve the problem that adsorbent is easily oxidized and damaged by strong oxidant, and TiO 2 Adsorption universality of adsorbents for pollutants

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
  • Recyclable mesoporous TiO2 adsorbent with adjustable surface electrical property as well as preparation method and application thereof
  • Recyclable mesoporous TiO2 adsorbent with adjustable surface electrical property as well as preparation method and application thereof
  • Recyclable mesoporous TiO2 adsorbent with adjustable surface electrical property as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A Recyclable Mesoporous TiO with Negative Surface Electricity 2 The preparation method of adsorbent, comprises the steps:

[0032] 1) Mix 100mL isopropanol and 25mL deionized water evenly, add 5mL ammonia water to it, and stir at room temperature;

[0033] 2) Add 75 mL of an isopropanol solution of di(acetylacetonato) titanate (TDAA) with a concentration of 10 mmol / L to the above solution, and continue stirring at a stirring speed of 500 rpm for 40 h to obtain a suspension. The volume ratio of isopropanol, deionized water and TDAA solution in the solution is 4:1:3, and the volume ratio of ammonia water and deionized water is 1:5;

[0034] 3) Centrifuge the obtained suspension at 8000rpm for 10min, wash with deionized water and isopropanol three times, then dry at 80°C for 12h, and grind to obtain TiO 2 Adsorbent powder.

[0035] The TiO that this embodiment prepares 2 The adsorbent, without lattice structure, belongs to amorphous TiO 2 , and its transmission electr...

Embodiment 2

[0044] A Recyclable Mesoporous TiO with Negative Surface Electricity 2 The preparation method of adsorbent, comprises the steps:

[0045] 1) Mix 50mL isopropanol and 25mL deionized water evenly, add 12.5mL ammonia water to it, and stir at room temperature;

[0046] 2) Add 25 mL of an isopropanol solution of di(acetylacetonato) titanate (TDAA) with a concentration of 10 mmol / L to the above solution, and continue to stir at a stirring speed of 500 rpm for 40 h to obtain a suspension. The volume ratio of isopropanol, deionized water and TDAA solution in the solution is 2:1:1, and the volume ratio of ammonia water and deionized water is 1:2;

[0047] 3) Centrifuge the obtained suspension at 8000rpm for 10min, wash it with deionized water and isopropanol three times, then dry at 50°C for 20h, and grind to obtain TiO 2 Adsorbent powder.

[0048] The TiO that this embodiment prepares 2 The adsorbent, without lattice structure, belongs to amorphous TiO 2 , its surface has abundan...

Embodiment 3

[0051] A Recyclable Mesoporous TiO with Negative Surface Electricity 2 The preparation method of adsorbent, comprises the steps:

[0052] 1) Mix 100mL isopropanol and 25mL deionized water evenly, add 2.5mL ammonia water to it, and stir at room temperature;

[0053] 2) Add 40 mL of an isopropanol solution of di(acetylacetonato) titanate (TDAA) with a concentration of 10 mmol / L to the above solution, and continue stirring at a stirring speed of 100 rpm for 80 h to obtain a suspension. The volume ratio of isopropanol, deionized water and TDAA solution in the solution is 4:1:1.6, and the volume ratio of ammonia water and deionized water is 1:10;

[0054] 3) Centrifuge the obtained suspension at 8000rpm for 10min, wash with deionized water and isopropanol three times, then dry at 100°C for 8h, and grind to obtain TiO 2 Adsorbent powder.

[0055] The TiO that this embodiment prepares 2 The adsorbent, without lattice structure, belongs to amorphous TiO 2 , its surface is rich in...

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

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a recyclable mesoporous TiO2 adsorbent with adjustable surface electrical property as well as a preparation method and application thereof. The preparation method comprises thefollowing steps: (1) uniformly mixing isopropanol and deionized water, adding an acidic solution or an alkaline solution into the mixture, and conducting stirring to obtain a solution I; (2) adding an titanium diisopropoxide bis(acetylacetonate) into the solution I, and conducting uniform stirring and centrifuging; and (3) cleaning the precipitate centrifuged in the step (2) with deionized waterand isopropanol, and then conducting drying and grinding to obtain the mesoporous TiO2 adsorbent. The mesoporous TiO2 adsorbent prepared by the invention not only has a large specific surface area, but also has rich active functional groups on the surface, and the surface electrical property of the mesoporous TiO2 adsorbent can be adjusted by adjusting the pH value of a solution in the preparationprocess, so that the mesoporous TiO2 adsorbent correspondingly shows efficient adsorption capacity on positively charged or negatively charged pollutants, and the mesoporous TiO2 adsorbent can be regenerated, and recyclable adsorption is achieved.

Description

technical field [0001] The invention relates to a recyclable mesoporous TiO with adjustable surface electrical properties 2 The preparation method and application of the adsorbent belong to the technical field of functional materials. Background technique [0002] In recent years, due to the development of many fields such as medicine, fluorescent materials, organic pesticides, and industrial dyes, a large number of pollutants such as antibiotics, pesticides, dyes, and chemicals have been discharged into the environment through industrial wastewater and domestic sewage, causing water pollution. In addition, many pollutants contain aromatic hydrocarbon structures, which are highly irritating to the skin, and are toxic, pathogenic, and teratogenic, threatening human health. Therefore, it is necessary to control such pollutants. [0003] Adsorption is a commonly used method to remove pollutants in water environments, but the adsorption process alone can only transfer pollutant...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/28B01J20/06B01J20/30B01J20/34C02F1/28C02F101/30C02F101/34C02F101/38
CPCB01J20/28085B01J20/06B01J20/3433B01J20/28083B01J20/28073C02F1/281C02F2101/38C02F2101/34C02F2101/308C02F2101/40Y02W10/37
Inventor 朱利苏靖婷肖军张若虎崔一平
Owner SOUTHEAST UNIV