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Method for degrading dyeing waste water by using cerium oxide nano particle as catalyst

A nanoparticle and dye wastewater technology, applied in the application field of cerium oxide nanoparticles, can solve the problems of complex catalyst preparation process, harsh degradation conditions, insufficient light utilization, etc., and achieves fast degradation speed, easy control of conditions, and energy saving. consumption effect

Inactive Publication Date: 2008-02-20
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a method for degrading reactive blue dye wastewater by cerium oxide nanoparticles as a catalyst, which solves the problem of complex catalyst preparation process for degrading reactive blue dye wastewater, harsh degradation conditions, low degradation efficiency, and insufficient light utilization. Difficult to achieve industrialization and other issues

Method used

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  • Method for degrading dyeing waste water by using cerium oxide nano particle as catalyst

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Embodiment 1

[0020] Prepare 0.1mol / L Ce(NO 3 ) 3 solution and 0.4mol / L NaAc solution, take 10ml of 0.1mol / LCe (NO 3 ) 3 The solution was put into a beaker, 2.73 g CTAB was added and stirred, and then 10 ml of 0.4 mol / L NaAc solution was added, and the mixture was mixed and stirred. Then, the mixed solution was put into a high-pressure polytetrafluoroethylene reaction tank, reacted in an oven at 180° C. for 6 hours, and cooled to room temperature in the furnace. The reacted solution was taken out, washed three times with deionized water and absolute ethanol, centrifuged, dried and ground to obtain cerium oxide nanoparticle powder. Prepare 100 mg / L reactive blue solution, put 40 ml into a conical flask, add the prepared cerium oxide nanoparticle powder, stir under natural light for 5 hours, and centrifuge to obtain a degraded solution.

[0021] The obtained cerium oxide nanoparticle powder was subjected to X-ray diffraction analysis. The results are shown in Figure 2. The diffraction pea...

Embodiment 2

[0025] Using the same reactants and methods as in Example 1, and reacting in an oven at 150 °C for 24 hours, CeO with a particle size in the nanometer scale can also be prepared. 2 Powder, degradable reactive blue dye wastewater.

Embodiment 3

[0027] with Ce(Ac) 3 and H 2 O is a reactant. Using the same conditions and methods as in Example 1, CeO with a particle size in nanometers can also be prepared. 2 Powder, degradable reactive blue dye wastewater.

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Abstract

A method for degrading dye waste water with ceria nano particles as catalyst pertains to the application technical field of ceria nano particles. The invention is characterized in that: firstly, powder of ceria nano particles is produced with a hydro-thermal method; secondly, the powder of ceria nano particles is added into activated blue dye waste water to degrade the activated blue dye waster water by illumination. The preparation technique of the catalyst of the invention is simple without calcinations or load, thereby, the purity of the product is high; the operation technique of the degradation is simple with easily controlled conditions and rapid degradation speed and the reaction can be taken placed by illumination under normal temperature and atmosphere, thereby being energy conservation.

Description

technical field [0001] The invention belongs to the technical field of application of cerium oxide nanoparticles, and particularly provides a method for degrading reactive blue dye wastewater by using cerium oxide nanoparticles as catalysts. Background technique [0002] Nano-CeO2 is the most active oxide catalyst in the rare earth oxide series. It has a relatively unique crystal structure, high oxygen storage capacity (OSC) and oxygen release capacity, and strong oxidation-reduction performance. It is an inexpensive catalyst. And a very wide range of industrial materials. It can be used as the main matrix material for the oxygen ion conductor of solid oxide fuel cells (SOFC), as a luminescent material, electronic ceramics, glass polishing agent and glass decolorizing and clarifying agent, and can be used as a three-way catalyst in automobile exhaust purification. Auxiliaries are also important components of superconductors, ceramics, petroleum cracking catalysts and homoge...

Claims

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Application Information

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IPC IPC(8): C02F1/58C02F1/30B01J23/10C01F17/00C02F103/30
Inventor 郭广生张悦
Owner BEIJING UNIV OF CHEM TECH
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