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Nanometer level zinc oxide as well as preparation method and purpose thereof

A zinc oxide, nano-scale technology, applied in the fields of zinc oxide/zinc hydroxide, chemical instruments and methods, oxidized water/sewage treatment, etc. Simple, large surface area effect

Inactive Publication Date: 2012-07-18
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are various auxiliary agents used in the solution method, such as cetyltrimethylammonium bromide (CTAB), hexamethylenetetramine (HMT), etc., but it has not been seen that dextran is used as an auxiliary agent to prepare nano ZnO report

Method used

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  • Nanometer level zinc oxide as well as preparation method and purpose thereof
  • Nanometer level zinc oxide as well as preparation method and purpose thereof
  • Nanometer level zinc oxide as well as preparation method and purpose thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1. Taking 0.1g dextran as the preparation of the nanoscale flower-shaped zinc oxide of auxiliary agent

[0020] 0.22g zinc acetate Zn(CH 3 COO) 2 2H 2 O (1mmol) and 0.1g dextran were dissolved in 40mL water, and after magnetic stirring for 30min, 18mL of 0.5mol·L -1 Sodium hydroxide aqueous solution, the solution was heated to 90°C in an oil bath, aged for 1 hour, cooled to room temperature, the product was centrifuged, washed with water and absolute ethanol several times, and dried at 40°C. Gained nanoscale flower-shaped zinc oxide is marked as ZnO (D-0.1), and its specific surface area is shown in Table 1, and its XRD measurement results are shown in Table 1. figure 1 , SEM measurement results see figure 2 .

[0021] Table 1

[0022]

Embodiment 2

[0023] Embodiment 2. Taking 0.5g dextran as the preparation of the nanoscale flower-shaped zinc oxide of auxiliary agent

[0024] 0.22g zinc acetate Zn(CH 3 COO) 2 2H 2 O (1mmol) and 0.5g dextran were dissolved in 40mL water, and after magnetic stirring for 30min, 18mL of 0.5mol·L -1 Sodium hydroxide aqueous solution, the solution was heated to 90°C in an oil bath, aged for 1 hour, cooled to room temperature, the product was centrifuged, washed with water and absolute ethanol several times, and dried at 40°C. Gained nanoscale flower-shaped zinc oxide is marked as ZnO(D-0.5), its specific surface area is shown in Table 1, and its XRD measurement results are shown in Table 1. figure 1 , SEM measurement results see figure 2 .

Embodiment 3

[0025] Embodiment 3. Taking 1g dextran as the preparation of the nanoscale flower-shaped zinc oxide of auxiliary agent

[0026] 0.22g zinc acetate Zn(CH 3 COO) 2 2H 2 O (1mmol) and 1g of dextran were dissolved in 40mL of water, and after magnetic stirring for 30min, 18mL of 0.5mol·L -1 Sodium hydroxide aqueous solution, the solution was heated to 90°C in an oil bath, aged for 1 hour, cooled to room temperature, the product was centrifuged, washed with water and absolute ethanol several times, and dried at 40°C. Gained nanoscale flower-shaped zinc oxide is marked as ZnO(D-1), its specific surface area is shown in Table 1, and its XRD measurement results are shown in Table 1. figure 1 , SEM measurement results see figure 2 .

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Abstract

The invention relates to nanometer level flower-shaped zinc oxide. The nanometer level flower-shaped zinc oxide is spiauterite type zinc oxide and has the nanometer level flower-shaped appearance, the size of the nanometer level flower-shaped zinc oxide is 500 to 800nm, each petal consists of nanometer bars with smaller size, and the specific surface area is 90-110m<2> g<-1>. The nanometer level flower-shaped zinc oxide provided by the invention has the characteristics that the appearance is in a flower shape, the specific surface area is large, and the like. The nanometer level flower-shaped zinc oxide has higher activity in the methyl orange photocatalytic degradation, and potential application values are realized in sewage treatment. The invention discloses a preparation method of the nanometer level flower-shaped zinc oxide.

Description

technical field [0001] The invention relates to a nanoscale zinc oxide material and a preparation method thereof. Background technique [0002] Methyl orange (sodium p-dimethylaminoazobenzenesulfonate) is a commonly used azo industrial dye, which has a very serious impact on the environment due to its difficulty in biodegradation. In recent years, photocatalytic oxidation of semiconductor materials has been used to Degradation of organic dyes in sewage has become an active research direction. Among these semiconductor materials, zinc oxide has a bandgap width of 3.2eV, and can generate photoinduced electron-hole pairs under the irradiation of ultraviolet light with a wavelength lower than 387.5nm, thus having good photocatalytic activity. C.H.Ye et al. studied the photocatalytic degradation of zinc oxide nanosheets for various organic dyes including methyl orange, and achieved good results. In addition, ZnO has rich morphology, such as nanowires, nanosheets, nanotubes, nan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B01J23/06B01J35/02C02F1/30C02F1/72C02F101/38
Inventor 董林齐蕾戴越高飞
Owner NANJING UNIV
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