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Solid-phase preparation method for nano zinc oxide through template

A nano-zinc oxide, solid-phase preparation technology, applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, nanotechnology, etc.

Inactive Publication Date: 2013-07-03
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Templating agents mainly include various types of surfactants, block copolymers, non-surface active organic small molecules, microemulsion emulsion droplets and colloidal crystals formed by polymer microspheres, etc. The lignin amine formed after lignin modification is Mesh structure, there is no report on the use of it as a template to synthesize nanomaterials

Method used

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  • Solid-phase preparation method for nano zinc oxide through template
  • Solid-phase preparation method for nano zinc oxide through template
  • Solid-phase preparation method for nano zinc oxide through template

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The solid-phase preparation of nano-zinc oxide photocatalyst by lignin amine template method, the specific steps are as follows:

[0031] 1. Take 4g of alkali lignin at room temperature and place it in a 250mL round bottom flask, add 95mL of deionized water and 5.5 mL of 0.4 mol. L -1 NaOH solution, stirred for 10 min, added 1.5 mL of formaldehyde, stirred for 10 min, then added 4.8 g of hexamethylenediamine, stirred for 10 min, heated to reflux at 65°C for 3 h, cooled to room temperature, filtered, and added 10% ferricyanide to the filtrate potassium ferricyanide solution to completely precipitate the prepared ligninamine, filter under reduced pressure, wash repeatedly to remove excess potassium ferricyanide, and put the filter cake in a constant temperature drying oven at 60°C for 10 hours;

[0032] 2. Add 0.05mol Zn(NO 3 ) 2 6H2O and 0.05molNa 2 CO 3 Grind them in different mortars for 15 minutes, then transfer them to the same mortar, add 1.0 g of the ligninami...

Embodiment 2

[0034] The solid-phase preparation of nano-zinc oxide by lignin amine template method is the same as that of Example 1. The difference is that the formaldehyde added in the first step is 2.5mL, and the amine used is 3.2g of tetraethylenepentamine. In the second step, the final The sample was calcined at 400°C for 2 hours to obtain white nano-zinc oxide. Sample XRD as figure 1 b, SEM such as figure 2 b.

Embodiment 3

[0036] The solid-phase preparation of nano-zinc oxide by ligninamine template method is the same as that of Example 1, except that in the second step, the sample is finally roasted at 600°C for 2 hours to obtain white nano-zinc oxide. Sample XRD as figure 1 c, SEM such as figure 2 c, PL such as image 3 b.

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Abstract

The invention discloses a solid-phase preparation method for nano zinc oxide through a template and relates to a solid-phase preparation method for nano zinc oxide. The method comprises the following steps: first, synthesizing lignin into lignin amine; and then, performing solid-phase preparation for nano zinc oxide taking the lignin amine as the template. According to the invention, the reticular lignin amine is prepared from the lignin through Mannick reaction, the advantages of being low in cost, nontoxic, easy to get and the like can be achieved; some base groups of the lignin amine are removed through high-temperature roasting, a pore structure is left, so that the specific surface area of the nano zinc oxide obtained from the lignin amine as a template agent is increased. Therefore, the method provided by the invention has the advantages of simple synthesis process, uniform particle size, controllable dynamics, low cost, easiness in operation, high yield, and low pollution, and reduces the hard aggregation appearance. The product prepared from the method is ice-cream, and adopts the structure of lead zinc ore of hexagonal system, and is suitable for industrialized production.

Description

technical field [0001] The invention relates to a method for preparing nano-zinc oxide in solid phase, in particular to a method for preparing nano-zinc oxide by using lignin amine as a template molecule. Background technique [0002] Lignin has the characteristics of non-toxicity, low cost, and environmental friendliness. Effective use of lignin can not only save natural resources, but also help protect the environment. The comprehensive utilization of lignin is the key to resource management of straw pulp black liquor. In the preparation method of nanomaterials, the template method can better control the particle size and shape of nanomaterials, realize the integration of synthesis and assembly of nanomaterials, and can solve the problem of dispersion stability of nanomaterials, and the synthesis process is relatively simple. Many methods are suitable for mass production. Templating agents mainly include various types of surfactants, block copolymers, non-surface active...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y30/00
Inventor 王晓红谢文静郝臣张一珂冯锋胡晓庆朱芳芳孔亮亮张大为
Owner JIANGSU UNIV
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