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Floating type CoFe2O4/TiO2/floating bead composite photocatalyst and preparation method thereof

A photocatalyst and catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, catalyst carrier, etc., can solve the problem of ineffective use of visible light, low photocatalyst quantum efficiency, and limited industrial application and other issues, to achieve easy recycling and reuse, improve photocatalytic degradation effect, increase surface area and adsorption performance

Active Publication Date: 2014-11-05
淮南市德瑞环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Example: TiO 2 Photocatalysts have low quantum efficiency, poor selective adsorption, harsh curing conditions, easy condensation, easy deactivation, etc.
And the spectral response range is in the ultraviolet region, and the visible part of the solar spectrum cannot be effectively used, which limits its industrial application

Method used

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  • Floating type CoFe2O4/TiO2/floating bead composite photocatalyst and preparation method thereof
  • Floating type CoFe2O4/TiO2/floating bead composite photocatalyst and preparation method thereof
  • Floating type CoFe2O4/TiO2/floating bead composite photocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A floating CoFe 2 o 4 / TiO 2 / floating bead composite photocatalyst, each component by weight percentage is: Co is 0.7wt%, Fe is 1.5wt%, Ti is 15wt%, and the rest is fly ash floating bead catalyst carrier.

[0029] The above-mentioned floating CoFe 2 o 4 / TiO 2 / The preparation method of floating bead composite photocatalyst, comprises the steps:

[0030] 1) Pretreatment of floating beads

[0031] Prepare 10% dilute nitric acid, soak the fly ash floating beads in it for 15 hours, filter, rinse with deionized water until neutral, then dry it, then put it in a muffle furnace, and calcinate it at 400°C for 2 hours to remove the unremoved Carbonization of organic matter. Rinse with distilled water to sort out the floating beads that are completely floating on the water surface. After filtering, drying and sieving, select the floating beads with a particle size of 100-125um as the carrier of the catalyst;

[0032] 2) TiO 2 Sol preparation

[0033] Add 40mL of butyl...

Embodiment 2

[0042] A floating CoFe 2 o 4 / TiO 2 / floating bead composite photocatalyst, each component by weight percentage is: Co is 0.5wt%, Fe is 2wt%, Ti is 18wt%, and the rest is fly ash floating bead catalyst carrier.

[0043] Its preparation method is with embodiment 1.

Embodiment 3

[0045] A floating CoFe 2 o 4 / TiO 2 / floating bead composite photocatalyst, each component by weight percentage is: Co is 1wt%, Fe is 1wt%, Ti is 12wt%, and the rest is fly ash floating bead catalyst carrier.

[0046] Its preparation method is with embodiment 1.

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Abstract

The invention discloses a floating type CoFe2O4 / TiO2 / floating bead composite photocatalyst and a preparation method thereof, and specifically relates to a CoFe2O4 / TiO2 / floating bead composite photocatalyst for treating organic wastewater, and a preparation method thereof. The CoFe2O4 / TiO2 / floating bead composite photocatalyst comprises catalyst active components and a catalyst carrier. The catalyst active components comprise, by weight, 0.5-1 wt% of Co, 1-2 wt% of Fe, 12-18 wt% of Ti, and the balance being a fly ash floating bead catalyst carrier. In the obtained CoFe2O4 / TiO2 / floating bead composite photocatalyst, CoFe2O4 is loaded on TiO2 film on the surface of the floating bead, thereby increasing specific surface area and increasing absorption performance.

Description

technical field [0001] The invention relates to the technical field of environmental material preparation, in particular to a floating type CoFe 2 o 4 / TiO 2 / floating bead composite photocatalyst and preparation method thereof. Background technique [0002] The use of semiconductors and compound semiconductors to photocatalyze the degradation of organic pollutants has achieved good research results in environmental pollution control in recent years. TiO 2 As a photocatalyst, it has good chemical stability, low cost, non-toxicity, easy access to raw materials, and can directly use visible light in sunlight as an excitation light source for catalytic oxidation, without secondary pollution, and is more environmentally friendly. Therefore, photocatalysis has broad application prospects in energy and environmental governance. But TiO 2 There are also some shortcomings in the practical application of photocatalytic oxidation technology. Example: TiO 2 Photocatalysts have ...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J32/00B01J35/02B01J35/10C02F1/30C02F101/30
CPCY02W10/37
Inventor 刘少敏朱敬林胡友彪储磊宋晓梅高良敏葛建华
Owner 淮南市德瑞环保科技有限公司
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