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Preparation method of biomimetic synthesis activated carbon-titanium dioxide composite material

A titanium dioxide and activated carbon technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of insignificant industrial wastewater treatment effect, high temperature in the preparation process, unstable connection effect, etc. Increase the probability of effective removal, rich surface functional groups, green environmental protection and low energy consumption

Inactive Publication Date: 2021-02-12
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this process, the titanium source is unstable and the preparation process has high temperature and high energy consumption. The combination of titanium dioxide and activated carbon only depends on physical effects without the support of chemical bonds. The connection effect is unstable, and the material is mainly used for air purification. The treatment effect of industrial wastewater is not obvious

Method used

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  • Preparation method of biomimetic synthesis activated carbon-titanium dioxide composite material
  • Preparation method of biomimetic synthesis activated carbon-titanium dioxide composite material
  • Preparation method of biomimetic synthesis activated carbon-titanium dioxide composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of said AC-TiO 2 The preparation of composite materials, the steps are as follows:

[0038] (1) Dry and sieve Enteromorpha powder in N2 Under protection, carbonize at a high temperature in a tube furnace at 500°C. After cooling to room temperature, add carbonized material and KOH to the carbonized material in a mass ratio of 1:1 and mix evenly, then place the mixture in the tube furnace , pass into N 2 Protection, heat up to 400-550°C, keep warm for 60 minutes, continue to heat up to 650-800°C, keep warm for 90 minutes. Wash with 0.1M hydrochloric acid and ultrapure water in sequence until the pH is about 7, dry and grind the activated carbon product, and seal it for storage.

[0039] (2) Under the condition of constant stirring, take 10 mg of activated carbon in 20 mL of ultrapure water, adjust the pH to 10 with NaOH solution, add 100 μL of APTES under the condition of constant stirring, after stirring for 2 hours, add 100 μL of Ti-BALDH and continue stirring ...

Embodiment 2

[0042] A kind of said AC-TiO 2 The preparation of composite materials, the steps are as follows:

[0043] (1) Carbonize the dried and sieved chlorella powder at a high temperature in a muffle furnace at 500°C, and after cooling to room temperature, add the carbonized material and KOH to the carbonized material in a mass ratio of 1:3 and mix evenly. Then put the mixture in a tube furnace, pass through N2 protection, raise the temperature to 400°C-550°C, keep it for 30 minutes, continue to raise the temperature to 650-800°C, and keep it for 60 minutes. Wash with 0.1M hydrochloric acid and ultrapure water in sequence until the pH is about 7, dry and grind the activated carbon product, and seal it for storage.

[0044] (2) Under the condition of constant stirring, take 10 mg of activated carbon in 20 mL of ultrapure water, adjust the pH to 10 with NaOH solution, add 400 μL of APTES under the condition of continuous stirring, after stirring for 2 hours, add 1000 μL of Ti-BALDH and...

Embodiment 3

[0047] A kind of said AC-TiO 2 The preparation of composite materials, the steps are as follows:

[0048] (1) Carbonize the dried and sieved spirulina powder in a muffle furnace at 450°C at high temperature, and after cooling to room temperature, add KOH to the carbonized material and mix the carbonized material and KOH according to the mass ratio of 1:5, and mix evenly, then Put the mixture in a tube furnace, feed N2 protection, raise the temperature to 400°C-550°C, keep it for 90 minutes, continue to raise the temperature to 650-800°C, and keep it for 60 minutes. Wash with 0.1M hydrochloric acid and ultrapure water in sequence until the pH is about 7, dry and grind the activated carbon product, and seal it for storage.

[0049] (2) Under the condition of constant stirring, take 30 mg of activated carbon in 20 mL of ultrapure water, adjust the pH to 10 with NaOH solution, add 500 μL of APTES under the condition of constant stirring, after stirring for 2 hours, add 1000 μL of...

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Abstract

The invention relates to a preparation method of an activated carbon-titanium dioxide composite material, and belongs to the field of nano composite materials. Biomass charcoal is used as a raw material to prepare activated carbon (AC), and the TiO2 and the activated carbon are connected through chemical bonds by utilizing biomimetic mineralization loaded nano TiO2 which is mild in biomimetic mineralization reaction condition, normal in temperature and pressure, green, environment-friendly and low in energy consumption, so that the TiO2 can be immobilized, solid-liquid separation is easy, recycling is convenient, and the adsorption performance of the activated carbon can be utilized to adsorb and enrich organic pollutants in the wastewater to the surfaces of TiO2 crystal grains, so that the contact probability of the catalyst and the pollutants is increased, the photocatalytic efficiency of the composite material is improved, and the degradation rate is increased. The synergistic effect of TiO2 and AC is utilized, and important social benefits and ecological benefits are achieved for saving energy, promoting biomass resource utilization and protecting the environment. The preparation method disclosed by the invention is simple in process, mild in reaction condition, low in cost and environment-friendly, and a new strategy is provided for photocatalytic degradation of pollutants.

Description

technical field [0001] The invention relates to a preparation method of an activated carbon-titanium dioxide composite material, which belongs to the field of nanocomposite materials. Background technique [0002] With the rapid development of modern science and technology, the problems of human living environment and energy depletion are becoming increasingly severe. With the acceleration of industrialization, the discharge of industrial wastewater and dye wastewater is gradually increasing, seriously aggravating the pollution of water resources that human beings rely on for survival. We can make full use of environmentally friendly and renewable energy to solve this problem and create green and clean energy. , which is a major challenge at present. Wastewater may be generated in various steps of industrial production and dye production process. Due to the complex components of the discharged organic wastewater, most of them are toxic, have high chroma, and are difficult ...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J21/06B01J35/00
CPCB01J21/18B01J21/063B01J35/39
Inventor 王晓娟刘彩刘芳黄方葛保胜戴祺
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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