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Preparation method of MCM-41@TiO2 adsorptive-photocatalytic nano composite material

A nanocomposite material, MCM-41 technology, applied in chemical instruments and methods, silicon compounds, separation methods, etc., can solve the problem of difficult to achieve low-concentration enrichment of organic pollutants, secondary pollution, small specific surface area of ​​photocatalysts, etc. problem, to achieve the effect of good application prospect, good service life and regenerative ability

Inactive Publication Date: 2014-12-10
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Adsorption is the most commonly used air purification technology. Its advantages are safety, convenience, and low price, and it can quickly remove pollutants. The disadvantage is that there is secondary pollution.
Photocatalytic technology can completely degrade organic pollutants and reduce secondary pollution. The disadvantages are that the specific surface area of ​​photocatalyst is small, the quantum efficiency is low, and it is difficult to achieve low-concentration enrichment of organic pollutants in the air, so the photocatalytic efficiency is low.

Method used

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  • Preparation method of MCM-41@TiO2 adsorptive-photocatalytic nano composite material
  • Preparation method of MCM-41@TiO2 adsorptive-photocatalytic nano composite material
  • Preparation method of MCM-41@TiO2 adsorptive-photocatalytic nano composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In a water bath at 40°C, add 0.8g of MCM-41 short-channel nanospheres into 60mL of tert-butanol solution and stir for 2 hours; then add 20mL of ethylene glycol and stir for 60 minutes; finally add 0.28mL of TiCl 4 Add it dropwise to the above solution and stir for 4 hours; then transfer the mixed solution to a stainless steel kettle and treat it at 160°C for 2 days. After the sample is taken out, it is centrifuged, washed, and dried at 80°C. The obtained sample is heated at 700°C for 4 hours. Roasting. Marked as MCM-41TiO 2 -1

Embodiment 2

[0021] In a water bath at 40°C, add 0.6g of MCM-41 short-channel nanospheres into 60mL of tert-butanol solution and stir for 2 hours; then add 20mL of ethylene glycol and stir for 60 minutes; finally add 0.28mL of TiCl 4 Add it dropwise to the above solution and stir for 4 hours; then transfer the mixed solution to a stainless steel kettle and treat it at 160°C for 2 days. After the sample is taken out, it is centrifuged, washed, and dried at 80°C. The obtained sample is heated at 700°C for 4 hours. Roasting. Marked as MCM-41TiO 2 -2

Embodiment 3

[0023] In a water bath at 40°C, add 0.4g of MCM-41 short-channel nanospheres into 60mL of tert-butanol solution and stir for 2 hours; then add 20mL of ethylene glycol and stir for 60 minutes; finally add 0.28mL of TiCl 4 Add it dropwise to the above solution and stir for 4 hours; then transfer the mixed solution to a stainless steel kettle and treat it at 160°C for 2 days. After the sample is taken out, it is centrifuged, washed, and dried at 80°C. The obtained sample is heated at 700°C for 4 hours. Roasting. Marked as MCM-41TiO 2 -3

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Abstract

The invention discloses an MCM-41@TiO2 adsorptive-photocatalytic nano composite material and a preparation method thereof. The MCM-41@TiO2 adsorptive-photocatalytic composite material is prepared by loading nano TiO2 on adsorbent through an in-situ alcohol heating technology. The adsorptive-photocatalytic composite material having different TiO2 loading capacities can be prepared by controlling the ratio of TiCl4, tert-butyl alcohol, ethylene glycol and MCM-41. In simulated pollutant degradation experiments, the composite material can quickly eliminate organic pollutants in a short time in a manner of adsorption before degradation. Meanwhile, in the presence of water, the composite material can preferentially adsorb organic substances and has favorable service life and regeneration capability. Thus, the invention has favorable application prospects in the aspect of indoor air pollution regulation.

Description

technical field [0001] The invention relates to an adsorption-photocatalytic nanocomposite material and a preparation method thereof, in particular to an MCM-41TiO 2 Adsorption-photocatalytic nanocomposite material and its preparation method. It belongs to the field of environmental materials. Background technique [0002] In recent years, the problem of environmental pollution has become increasingly prominent, and has become an important reason that hinders the development of social productivity and affects people's health. Therefore, the effective use of existing technologies to develop new and practical environmental protection technologies is a strategic issue that affects human survival and health in the 21st century. Among the environmental pollution that affects human health, indoor air pollution is easily overlooked because it is not easy to detect. In fact, people spend more than 80% of their time indoors on average every day. Although the concentration of indoor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/16B01J20/30B01J29/70B01D53/04B01D53/86B01D53/72
Inventor 朱建曹艳凤乔洁琼姚昱岑李和兴
Owner SHANGHAI NORMAL UNIVERSITY
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