Preparation method of zinc oxide/titanium dioxide composite nanomaterial

A technology of composite nanomaterials and titanium dioxide, which is applied in the field of preparation of zinc oxide/titanium dioxide composite nanomaterials, can solve the problems of high equipment requirements and achieve the effects of good dispersion, low energy consumption and high product purity

Active Publication Date: 2016-07-06
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the output of this method has been greatly improved compared with other methods, the high pressure envi...

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  • Preparation method of zinc oxide/titanium dioxide composite nanomaterial
  • Preparation method of zinc oxide/titanium dioxide composite nanomaterial
  • Preparation method of zinc oxide/titanium dioxide composite nanomaterial

Examples

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Embodiment 1

[0024] The preparation method of zinc oxide / titanium dioxide composite nanomaterial of the present invention comprises the following steps:

[0025] Step 1, take P25 type titanium dioxide powder according to the concentration of 0.274g / L, disperse it in deionized water, use magnetic force or electric stirring to mix evenly; Add hexamethylenetetramine (the molar ratio of soluble zinc salt to hexamethylenetetramine is between 1:0.5 and 2) into the solution at a concentration of 25mmol / L, and mix evenly to obtain a dispersed solution;

[0026] Step 2, heating the dispersion solution in step 1 while stirring, allowing it to react at a temperature of 95° C. for 20 minutes to complete the growth process;

[0027] In step 3, the precipitate after the reaction in step 2 is filtered, washed and dried to obtain the final product.

[0028] In the zinc oxide / titanium dioxide composite nanomaterial prepared in Example 1, the mass percentage of titanium dioxide is 14%. figure 1 For the X-...

Embodiment 2

[0030] The preparation method of zinc oxide / titanium dioxide composite nanomaterial of the present invention comprises the following steps:

[0031] Step 1, take the P25 type titanium dioxide powder by weighing 0.274g / L according to the concentration, disperse it in deionized water, use magnetic force or electric stirring to mix evenly; / L Add hexamethylenetetramine to the solution, and mix evenly to obtain a dispersed solution;

[0032] Step 2, heating the dispersion solution in step 1 while stirring, making it react at a temperature of 80°C for 40 minutes to complete the growth process;

[0033] In step 3, the precipitate after the reaction in step 2 is filtered, washed and dried to obtain the final product.

[0034] In the zinc oxide / titanium dioxide composite nanomaterial prepared in Example 2, the mass percentage of titanium dioxide is 20%. The results show that the morphology and structure of the product are basically the same as those of Example 1 except that the diam...

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Abstract

The invention discloses a preparation method of a zinc oxide/titanium dioxide composite nanomaterial.The method includes the following steps that 1, a certain quantity of titanium dioxide powder is dispersed in water, the required quantity of soluble zinc salt and hexamethylenetetramine are then added to a solution, stirring is conducted, and a dispersed solution is obtained; 2, the dispersed solution obtained in step 1 is heated while stirring is conducted, and a reaction is conducted for 10-80 minutes at the temperature of 60-95 DEG C; 3, sediment obtained after the reaction in step 2 is filtered, cleaned and dried, and the zinc oxide/titanium dioxide composite nanomaterial can be obtained.By means of the preparation method, large-batch synthesis of the zinc oxide/titanium dioxide composite nanomaterial of a one-dimensional structure can be achieved, the mode of direct synthesis in a water solution under normal pressure is adopted, the reaction condition is mild, energy consumption is low, cost is low, and the yield is high; an obtained product has the advantages of being large in specific surface area, good in dispersibility and high in degree of crystallinity.

Description

technical field [0001] The invention relates to a method for preparing a zinc oxide / titanium dioxide composite nanomaterial, belonging to the field of composite nanomaterial preparation. Background technique [0002] Among many semiconductor oxides, zinc oxide (ZnO) is an important direct bandgap semiconductor with a wide bandgap (3.37eV) and high exciton binding energy (60meV). Strong exciton luminescence was observed. In particular, zinc oxide is non-toxic, stable in environment, good in compatibility, low in price, and easy to prepare zinc oxide nanostructures. These excellent properties of zinc oxide have made its nanomaterials widely used in many fields, such as photocatalytic materials, photovoltaic materials, sensors, piezoelectric materials, ultraviolet light detection, light-emitting diodes, and nanolasers. [0003] Titanium dioxide (TiO 2 ) has the same band gap as ZnO, and also has good environmental and biological compatibility. Many reports have also confirm...

Claims

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Application Information

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IPC IPC(8): C01G23/047C01G9/02B82Y30/00
CPCC01G9/02C01G23/08C01P2002/72C01P2004/03C01P2004/04C01P2004/84C01P2006/80
Inventor 洪昆权王文达李同乐
Owner SOUTHEAST UNIV
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