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ceo 2 Nanoparticle/cds nanorod composite photocatalyst and its preparation method and application

A nanoparticle and nanorod technology, applied in the field of composite photocatalyst preparation, achieves the effects of high strength, high recyclability and strong light absorption

Active Publication Date: 2017-03-01
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, rare earth metals have gradually attracted people's attention because of their photocatalytic activity, adsorption, corrosion resistance and oxidation resistance. However, in the research of semiconductor recombination, there are few reports on the preparation of photocatalysts by modifying CdS with rare earth metal oxides.

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  • ceo <sub>2</sub> Nanoparticle/cds nanorod composite photocatalyst and its preparation method and application
  • ceo <sub>2</sub> Nanoparticle/cds nanorod composite photocatalyst and its preparation method and application
  • ceo <sub>2</sub> Nanoparticle/cds nanorod composite photocatalyst and its preparation method and application

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Embodiment 1

[0045] A kind of CeO of the present invention 2 Nanoparticles / CdS nanorod composite photocatalyst, with one-dimensional structure of CdS nanorods as the matrix, CeO 2 Nanoparticles are decorated on the surface of CdS nanorods.

[0046] where CeO 2 The nanoparticles are spherical crystals with a diameter of 10nm-25nm, and the band gap is 3.2eV; the CdS nanorods are CdS nano-rod crystals with a length of 1μm-2μm and a diameter of 100nm, and a band gap of 2.4eV.

[0047] CeO 2 The preparation method of nanoparticle / CdS nanorod composite photocatalyst comprises the following steps:

[0048] (1) Preparation of CdS nanorods:

[0049] a. Weigh 3.12g sodium diethyldithiocarbamate and 1.269g CdCl respectively 2 2.5H 2 O was poured into a 600ml beaker, and then 450ml of deionized water was added thereto, ultrasonicated for 30min and stirred for 1h to fully react the raw materials.

[0050] b. After fully reacting in step a, the reaction product was left to stand for 30 minutes, a...

Embodiment 2

[0062] This embodiment is basically the same as Example 1, the only difference is that in step (2) Ce(NO 3 ) 3 ·6H 2 O dosage is 6.012mg.

Embodiment 3

[0064] This embodiment is basically the same as Example 1, the only difference is that in step (2) Ce(NO 3 ) 3 ·6H 2 O dosage is 18mg.

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Abstract

The invention discloses a CeO2 (Cerium Oxide) nano-particle / CdS (Cadmium Sulfide) nano-rod composite photo-catalyst as well as a preparation method and an application thereof. The CeO2 nano-particle / CdS nanorod composite photo-catalyst takes a CdS nano-rod of a one-dimensional structure as a substrate, CeO2 nano-particles are decorated on the surface of the CdS nano-rod. The preparation method comprises the steps of enabling sodium diethyldithiocarbamate and CdCl2.2.5H2O (Cadmium Chloride) to react to obtain cadmium diethyldithiocarbamate; then, adding a solvent to carry out solvothermal reaction to obtain the CdS nano-rod; ultrasonically dispersing the CdS nano-rod and the Ce(NO3)3.6H2O (Cerium(III) Nitrate Hexahydrate) in absolute ethyl alcohol to obtain a suspension; and dripping deionized water into the suspension to carry out solvothermal reaction by dropping. The CeO2 nano particle / CdS nanorod composite photo-catalyst provided by the invention has the advantages of high catalytic efficiency, strong resistance to corrosion, low cost and the like, thereby being applicable to dye degradation.

Description

technical field [0001] The invention relates to the preparation of a composite photocatalyst, in particular to a CeO 2 Nanoparticle / CdS nanorod composite photocatalyst and its preparation method and application. Background technique [0002] With the development of the economy, dyes are widely used in textiles, leather, food, paint, ink and rubber, etc., and the environmental problems caused by dye wastewater in my country are becoming increasingly prominent. Most dyes have strong chemical stability and biodegradability, can exist in water for a long time and cause serious environmental pollution. Therefore, eliminating the pollution caused by dye wastewater in the environment has become an important research topic in the field of environmental protection. [0003] Photocatalytic technology is an emerging environmental pollution control technology. This technology combines photocatalysts with pollutants and uses light energy as a driving force to achieve the degradation an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04C02F1/28C02F1/30
CPCY02W10/37
Inventor 袁兴中谷姗思陈耀宁王侯吴志斌刘阳蒋谦陈晓红曾光明
Owner HUNAN UNIV
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