Preparation method of zinc oxide nanorod

A zinc oxide nanorod, sodium hydroxide technology, applied in zinc oxide/zinc hydroxide, nanotechnology, nanotechnology and other directions, can solve the problem of long, generally ranging from ten hours to several days, difficult to achieve mass production, Due to the small size of the reactor, the effects of low equipment requirements, short time consumption and cost reduction are achieved.

Inactive Publication Date: 2013-10-23
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process of traditional hydrothermal synthesis of zinc oxide nanorods is generally carried out in a hydrothermal kettle, the reaction time is relatively long, generally ranging from ten hours to several days, the energy consumption is relatively large, and the reaction kettle is generally small in size, so it is difficult to realize mass production

Method used

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  • Preparation method of zinc oxide nanorod
  • Preparation method of zinc oxide nanorod
  • Preparation method of zinc oxide nanorod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: take by weighing 3 g of sodium hydroxide, add 20 ml of water, add 0.1 g of cetyltrimethylammonium bromide and 1.5 g of carbonamide after sodium hydroxide dissolves, stir for half hour, dubbed solution No. 1; weighed 2.5g of zinc nitrate, dissolved in 30 ml of water, dubbed solution No. 2. Heat No. 1 solution to 70°C, add No. 2 solution to No. 1 solution after 20 minutes, and react for 20 minutes; centrifuge the white suspension, wash it with alcohol and water, and dry it in a drying oven at 50°C for 10 hours to obtain oxidized Zinc nanorod powder.

[0022] figure 1 The SEM image of ZnO nanorods is given. It can be seen from the figure that the diameter of the nanorods is about 100 nm and the length is about 350 nm. figure 2 It is the XRD pattern of zinc oxide nanorods. The XRD data results show that the obtained nanorods are standard hexagonal wurtzite ZnO, and the diffraction peaks correspond to the standard card JCPDS card number 36-1451 of ZnO.

Embodiment 2

[0023] Embodiment 2: take by weighing 2 g of sodium hydroxide, add 20 ml of water, add 0.15 g of cetyltrimethylammonium bromide and 1.5 g of carboxamide after the sodium hydroxide dissolves, stir for half hours, to make solution No. 1; weigh 1.5 g of zinc acetate, dissolve it in 20 ml of water, and make solution No. 2. Heat No. 1 solution to 80°C, add No. 2 solution to No. 1 solution after 20 minutes, and react for 20 minutes; centrifuge the white suspension, wash it with alcohol and water, and dry it in a drying oven at 60°C for 9 hours to obtain oxidized Zinc nanorod powder. The pH of the system was changed to increase the concentration of cetyltrimethylammonium bromide at the same time, and the ratio of length and diameter of the prepared zinc oxide nanorods was 4:1.

Embodiment 3

[0024] Embodiment 3: take by weighing the potassium hydroxide of 3.5 g, add the water of 20 ml, after the potassium hydroxide dissolves, add the hexadecyl trimethyl ammonium bromide of 0.1 g and the carboxamide of 1.5 g, stir half hours, to make solution No. 1; weigh 1.5 g of zinc acetate, dissolve it in 20 ml of water, and make solution No. 2. Heat No. 1 solution to 80°C, add No. 2 solution to No. 1 solution after 20 minutes, and react for 20 minutes; centrifuge the white suspension, wash it with alcohol and water, and dry it in a drying oven at 60°C for 9 hours to obtain oxidized Zinc nanorod powder. Potassium hydroxide and sodium hydroxide strong bases have little effect on the final result. The obtained zinc oxide nanorods have a diameter of about 110 nm and a length of about 380 nm.

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Abstract

The invention discloses a preparation method of a zinc oxide nanorod. The preparation method comprises the following steps of: preparing a water solution of sodium hydroxide or potassium hydroxide; weighting cetyltrimethylammonium bromide according to the mole ratio of the cetyltrimethylammonium bromide to the sodium hydroxide of (0.001:1)-(1:1), and adding the cetyltrimethylammonium bromide into the water solution of the sodium hydroxide; weighting carbamide according to the mole ratio of the carbamide to the sodium hydroxide of 0.05:1 to 1:1, adding the carbamide into the prepared solution, and stirring the solution; weighting a zinc precursor according to the mole ratio of the zinc precursor to the sodium hydroxide of (0.03-3):1, and preparing a zinc precursor solution with the concentration of 0.3-1M; heating and stirring the solution; and centrifuging the solution to obtain white powder, and drying to obtain the zinc oxide nanorod. The method is simple in operation; the prepared ZnO rod is adjustable in size; the prepared ZnO rod is small in size so as to be large in special surface area and suitable for application in a photocatalyst and a gas sensor.

Description

technical field [0001] The invention relates to the preparation technology of metal oxide nanorods, in particular to a method for preparing zinc oxide nanorods under alkaline conditions. Background technique [0002] The use of metal oxides as photocatalytic materials has been widely used as a new air and water purification technology. Semiconductor photocatalysis technology has very broad application prospects in the field of water decomposition using sunlight and photodegradation of organic pollutants. Therefore, become one of the most active areas of research. Among all kinds of photocatalytic materials, ZnO has many excellent optical and electrical properties due to its wide band gap and large exciton binding energy. In addition, due to its cheap price, good chemical and photochemical stability, the material is Pollution becomes one of the most concerned materials. Zinc oxide has many different structures, such as ZnO nanowires, nanotubes, nanorods, and microspheres. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y30/00B82Y40/00
Inventor 葛美英尹桂林何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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