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Titanium-based composite material for visible light catalytic degradation of rhodamine B and preparation thereof

A titanium-based composite material, catalytic degradation technology, applied in special compound water treatment, physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, etc., can solve problems such as human skin damage, and achieve the cost of raw materials Low, synergistic improvement, high economic efficiency

Inactive Publication Date: 2018-07-31
MINJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, ultraviolet light has greater damage to human skin.

Method used

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  • Titanium-based composite material for visible light catalytic degradation of rhodamine B and preparation thereof
  • Titanium-based composite material for visible light catalytic degradation of rhodamine B and preparation thereof
  • Titanium-based composite material for visible light catalytic degradation of rhodamine B and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of active TiO by sol-gel method 2 Nano powder

[0037] Solution A: Take a clean beaker and place it on a magnetic stirrer, use a graduated cylinder to measure 5 mL of deionized water and pour it into the beaker, while stirring slowly, measure 2.5 mL of glacial acetic acid and 5 mL of absolute ethanol in turn to add In a beaker, cover the beaker with plastic wrap, stir for 10 min to form A solution;

[0038] Solution B: Take another clean beaker and put it on another magnetic stirrer, use a dry measuring cylinder to measure 5 mL of butyl titanate into the beaker, add 20 mL of absolute ethanol under vigorous stirring, and cover with plastic wrap beaker, stirred for 10 min to form B solution;

[0039] Under vigorous stirring, slowly pour B solution into A solution to obtain a milky white transparent sol, let the colloid stand for 4 hours, and dry it in an oven at a low temperature of 60°C for 24 hours to obtain yellow crystals, which are ground into powder wi...

Embodiment 2

[0041] TiO 2 / Ag + Preparation of nanocomposites

[0042] Solution A: Take a 50 mL beaker, measure 10 mL deionized water into the beaker, add 1g TiO 2 , 0.214 g of AgNO 3 solid, stir until completely dissolved;

[0043] Solution B: take another 50 mL beaker, measure 20 mL deionized water into the beaker, and stir for 10 min;

[0044] Under stirring at room temperature, slowly add liquid B into liquid A, stir for 45 min, centrifuge, discard the supernatant, wash the precipitate with deionized water 4 times, and dry at 60°C to obtain TiO 2 / Ag + nanocomposites.

Embodiment 3

[0046] TiO 2 / Ag + Preparation of / IL nanocomposites

[0047] Liquid A: Take a 50 mL beaker, measure 10 mL of deionized water and pour it into the beaker, and add 1 g of TiO prepared in Example 1 in sequence 2 Nanopowder, 0.214 g AgNO 3 Solid, stir until completely dissolved;

[0048] Solution B: take another 50 mL beaker, measure 20 mL deionized water into the beaker, then add 0.02 g 1-butyl-2-methyl-imidazolium chloride salt, stir for 10 min;

[0049] Under stirring at room temperature, slowly add liquid B into liquid A, stir for 45 min, centrifuge, discard the supernatant, wash the precipitate with deionized water 4 times, and dry at 60°C to obtain TiO 2 / Ag + / IL nanocomposite a.

[0050] performance testing

[0051] Three kinds of series TiO prepared by embodiment 1-3 2 Based nanomaterials were ground in an agate mortar, uniformly dispersed in an ethanol solution, and scanned by a transmission electron microscope. The results were as follows: figure 1 As shown, i...

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Abstract

The invention discloses a titanium-based composite material for visible light catalytic degradation of rhodamine B and a preparation method thereof, belongs to the technical field of environmental sewage treatment, and relates to the preparation of a new material for photocatalysis. Specifically, TiO2 nano powder is prepared by a sol-gel method, and a TiO2 / Ag+ / IL nano composite material is prepared by a liquid phase co-precipitation method with Ag+ as a dopant and ionic liquid (IL) as a modifier. The photocatalysis degradation property of the composite nano material on rhodamine B dye is investigated under visible light, and the degradation rate can reach 98.87% after condition optimization. The method has the advantages of low cost, simple and convenient preparation, excellent rhodamine Bdegradation effect, effective improvement of the environmental sewage treatment efficiency, and realization of organic unification of social, economic and environmental benefits.

Description

technical field [0001] The present invention belongs to TiO 2 The invention discloses a method for preparing a titanium-based composite material, in particular to a titanium-based composite material for catalytically degrading rhodamine B with visible light and a preparation method thereof. Background technique [0002] The natural environment is suffering unprecedented pollution, environmental issues have become hot issues, and the scientific community has also caused an "environmental fever". Nanomaterial photocatalytic technology has broad development prospects and application space in environmental sewage degradation. Environmental sewage containing dyes, pesticides, organic pollutants and other substances can be photocatalytically degraded into small molecular substances that are harmless to the environment through decolorization and photocatalytic degradation. Compared with traditional physical and chemical treatment methods, nanomaterials synthesized by appropriate ...

Claims

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Application Information

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IPC IPC(8): B01J31/38C02F1/30C02F101/30
CPCC02F1/30B01J31/38C02F2305/10C02F2101/308B01J35/39
Inventor 李艳霞陈幼萍
Owner MINJIANG UNIV
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