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Preparation method of zinc oxide nanorod with strong blue-violet light after being excited

A zinc oxide nanorod, violet light technology, applied in chemical instruments and methods, zinc oxide/zinc hydroxide, nanotechnology, etc., can solve the problem of long reaction time of zinc oxide nanorods, spectral width at half maximum, limited application, etc. problems, to achieve excellent photocatalytic properties, good monochromaticity, and a wide range of raw materials.

Active Publication Date: 2014-09-10
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regarding the blue-violet light emission of ZnO nanorods, only see the theoretical research on the blue-violet light emission of ZnO in the literature, and the preparation method of doped zinc oxide nanorods or doped zinc oxide thin films that emit blue-violet light with single photons, and how to prepare stable and blue-emitting films. Purple light and ZnO nanorods that convert blue-violet light under certain conditions have not been reported in the literature
On the other hand, the published literature has long reaction time to prepare zinc oxide nanorods, weak blue light emission, wide half-maximum spectral width, and poor monochromaticity. Therefore, the application is limited.

Method used

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  • Preparation method of zinc oxide nanorod with strong blue-violet light after being excited
  • Preparation method of zinc oxide nanorod with strong blue-violet light after being excited
  • Preparation method of zinc oxide nanorod with strong blue-violet light after being excited

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preparation example Construction

[0046] A method for preparing zinc oxide nanorods excited by strong blue-violet light, comprising the steps of:

[0047] 1) Weigh the zinc source precursor, alkali, weak reducing agent and optional doping element precursor, dissolve in deionized water to obtain solution A;

[0048] 2) Dissolving non-aqueous solvent alcohol and / or ketone and dispersant polyethylene glycol in deionized water to obtain solution B;

[0049] 3) Mix solutions A and B evenly, add a water-soluble surfactant, stir and dissolve, and obtain solution C;

[0050] 4) Transfer the solution C into the reaction kettle, keep it warm at 100-180°C for 0.5-5h, and react to obtain a precipitate;

[0051] 5) The precipitate was separated and dried to obtain zinc oxide nanorods.

[0052] In the above preparation method, preferably, the weak reducing agent is at least one of water-soluble organic amines and fatty acid alcohol amine salts. Wherein the water-soluble organic amine is preferably at least one of alkylamin...

Embodiment 1

[0066] (1) Weigh 0.004mol of Zn(NO 3 ) 2 ·6H 2 O, dissolve in 8ml deionized water, then add 0.03mol NaOH and 0.006mol triethanolamine in sequence, stir to dissolve, add water to 10mL, and obtain solution A;

[0067] (2) Measure 50ml of absolute ethanol, dissolve it in 10ml of deionized water, then add 4.0g of PEG2000, stir to dissolve completely, and obtain solution B;

[0068] (3) Stir and mix solutions A and B, then add 10ml of 0.1mol / L CTAB (trimethylhexadecyl ammonium bromide) solution, stir and mix to obtain solution C;

[0069] (4) Pour solution C into a polytetrafluoroethylene-lined reaction kettle, and react at 100°C for 1 hour with hydrothermal constant temperature;

[0070] (5) After naturally cooling to room temperature, the reactant was taken out and centrifuged, and the precipitate was washed and dried to obtain white powdery zinc oxide nanorods.

Embodiment 2～5

[0072] Examples 2-5 are similar to Example 1, only the reaction temperature is changed, which are 120°C, 140°C, 160°C and 180°C respectively, and other conditions remain unchanged.

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Abstract

The invention discloses a preparation method of zinc oxide nanorods excited by strong blue-violet light. The method of the invention simultaneously adopts a reaction system composed of soluble zinc salt, alkali, amine, non-aqueous solvent alcohol or ketone, dispersant and surfactant. The solvothermal method prepares ZnO nanorods, which makes the lattice of nanorods rich in interstitial zinc, which has the advantages of short time consumption, good effect, and controllable shape of nanorods. The zinc oxide nanorods prepared by the method of the invention have strong blue-violet light emission characteristics, are easily stimulated to generate photogenerated electrons / holes under certain conditions, have excellent photocatalytic properties, and have great application value.

Description

technical field [0001] The invention relates to a preparation method of a nano-luminescent material, in particular to a preparation method of excited zinc oxide nanorods with strong blue-violet light. Background technique [0002] ZnO is a semiconductor material in II-VI compounds. The bandgap width of ZnO is 3.37eV, and the exciton binding energy is 60meV, which is much higher than other wide bandgap semiconductor materials, such as GaN, which is 25meV. [0003] Nano-ZnO has a particle size between 1 and 100nm, has various nanostructures, and has excellent performance in many fields such as optoelectronics, piezoelectricity, pyroelectricity, ferroelectricity, and laser emitters. As a semiconductor material with direct bandgap and wide bandgap, the most potential application of ZnO is in the field of optoelectronic devices. [0004] ZnO excitons are stable at room temperature, enabling highly efficient stimulated luminescence at room temperature or higher. The luminescence...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82Y40/00B01J23/06C09K11/54
Inventor 铁绍龙肖钗兰胜戴军
Owner SOUTH CHINA NORMAL UNIVERSITY