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Laminated chitosan/organic rectorite/tio2-ag@agcl intercalated nanocomposite photocatalytic film and its preparation method

A nanocomposite, photocatalytic film technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high value-added development and utilization, etc. Achieve the effect of improving service life, controllable response and simple operation

Inactive Publication Date: 2018-11-23
XIANYANG NORMAL UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is a high-quality rectorite deposit with a reserve of more than 6 million tons in Hubei, my country. Because people know it later than other clays, there are few development and utilization of high value-added rectorite.

Method used

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  • Laminated chitosan/organic rectorite/tio2-ag@agcl intercalated nanocomposite photocatalytic film and its preparation method
  • Laminated chitosan/organic rectorite/tio2-ag@agcl intercalated nanocomposite photocatalytic film and its preparation method
  • Laminated chitosan/organic rectorite/tio2-ag@agcl intercalated nanocomposite photocatalytic film and its preparation method

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Embodiment 1

[0040] 1. Preparation of organic rectorite

[0041] 5g rectorite was calcined at 850°C for 3 hours, then the calcined rectorite was added into 161.67g distilled water to form a rectorite suspension with a mass fraction of 3%, and 0.15g sodium pyrophosphate was added, at 60°C Stir for 3 hours, filter, wash and dry to obtain sodium rectorite. Add 5g of sodium rectorite to 161.67g of distilled water, stir homogeneously at high speed to fully disperse, then add 0.15g of cetyltrimethylammonium chloride, stir at 70°C for 8 hours, cool naturally, and filter with suction , washed with water, dried the filter cake in an oven at 90°C for 8 hours, ground and sieved to obtain the organic rectorite.

[0042] 2. Preparation of organic rectorite / TiO 2 -Ag@AgCl complex

[0043] (1) Mix 14 mL (51.31 mmol) of isopropyl titanate and 36 mL of 6 mol / L hydrochloric acid, and stir at room temperature for 3 hours to obtain a pillared solution.

[0044] (2) Ultrasonic disperse 5 g of organic recto...

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Abstract

The invention discloses a laminated chitosan / organic rectorite / TiO2-Ag@AgCl intercalated nanocomposite photocatalytic film and a preparation method thereof, and belongs to the technical field of environmental protection material preparation. The present invention first uses a sol-gel method to prepare organic rectorite / TiO2, then uses a deposition method and a photoreduction method to prepare organic rectorite / TiO2-Ag@AgCl, and finally uses a solution method to prepare chitosan / organic rectorite / TiO2‑Ag@AgCl intercalated nanocomposite was repeatedly salivated‑freeze‑dried to prepare a physically crosslinked laminated composite film. The intercalated nanocomposite photocatalytic film prepared by the invention is non-toxic, cheap, biodegradable, has good stability, has high visible light photocatalytic activity, will not cause waste of resources and form secondary pollution, and is expected to be used in fields such as industry and agriculture. Treatment of organic wastewater and indoor volatile organic gases.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental protection materials, in particular to a laminated chitosan / organic rectorite / TiO with adsorption-visible light photocatalysis function 2 - Preparation method of Ag@AgCl intercalated nanocomposite photocatalytic film. Background technique [0002] Organic wastewater often has complex components and is difficult to biodegrade. It accumulates and stores in natural environments such as water bodies and soils, seriously damaging the ecological environment and human health. Equally, the problem of indoor pollution caused by the use of building construction, interior decoration and daily necessities is also becoming more and more serious. Effective treatment of organic wastewater and removal of indoor volatile organic pollutant gases are the focus and difficulty of current research in the field of pollution control. Traditional methods for treating organic pollutants mainly includ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/38B01J35/02B82Y30/00B82Y40/00B01J20/24B01J20/28B01J20/30C02F1/28C02F1/30C02F101/38B01J35/00
CPCB01J20/22B01J20/24B82Y30/00B82Y40/00C02F1/285C02F1/30B01J20/28033B01J31/38C02F2101/38C02F2305/10B01J35/00B01J35/30B01J35/39B01J35/59
Inventor 杨连利郭乃妮张卫红郭颖耿薇孟小华
Owner XIANYANG NORMAL UNIV
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