Method for preparing nanometre copper oxide by solid-phase template method

A technology of nano-copper oxide and template method, which is applied in the fields of copper oxide/copper hydroxide, nanotechnology, nanotechnology, etc.

Inactive Publication Date: 2013-09-18
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] is collected and utilized, and directly discharged into the water body along with the black liquor, which not only wastes resources, but also causes serious environmental pollution hazards

Method used

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  • Method for preparing nanometre copper oxide by solid-phase template method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The solid-phase preparation of nano-copper oxide by lignin amine template method, the specific steps are as follows:

[0034] 1. Take 10g of lignin, add 30mL of deionized water, drop in a mixture of 1mL of concentrated hydrochloric acid and 7mL of dioxane while stirring, heat and reflux at 75°C for 5h, cool to room temperature, filter, wash the precipitate and filter, take Add 10g of lignin purified by the above steps, add 30mL of absolute ethanol, add 0.75mL of concentrated hydrochloric acid dropwise while stirring, heat and reflux at 75°C for 4h, filter, wash several times to obtain a tan fine powder, air-dry, and set aside .

[0035] 2. Weigh 8 g of the purified and degraded lignin prepared in step 1 at room temperature, add 184 mL of deionized water and 0.4 mol. L -1 NaOH solution 11mL, magnetically stirred for 10min, added 5mL of formaldehyde, stirred for 10min, then added 5.6mL of tetraethylenepentamine, continued to stir for 10min, the solution was heated to re...

Embodiment 2

[0038] The solid-phase preparation of nano-copper oxide by ligninamine template method is the same as that of Example 1, except that in the third step, the dried solid is finally calcined at 700° C. for 2 hours. Sample SEM as figure 2 b.

Embodiment 3

[0040] Preparation of nano-copper oxide in solid phase by lignin amine template method is the same as in Example 1, except that in the second step, 4 g of the purified and degraded lignin prepared in step 1 is weighed, and 92 mL of deionized water and 0.4 mol ﹒ L -1 NaOH solution was 5.5 mL, the added formaldehyde was 2.5 mL, and the added tetraethylenepentamine was 2.8 mL. In the third step, the dried solid is finally calcined at 300° C. for 2 hours. Sample XRD as figure 1 b.

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Abstract

The invention discloses a method for preparing nanometre copper oxide by a solid-phase template method. The method comprises the following steps of: purifying and degrading lignin at first; then synthesising lignin-amine via amination modification; and finally using the prepared lignin-amine as a template for preparing nanometre copper oxide in a solid phase. Lignin is difficult to dissolve in general solvents, therefore, the template agent is removed by a roasting method. The method disclosed by the invention is simple in synthesis process, low in cost, easily-available in raw materials, high in productivity, and less in environmental pollution; the prepared product is black, various in shape, and wide in application.

Description

technical field [0001] The invention relates to a method for preparing nano-copper oxide in solid phase, in particular to a method for preparing nano-copper oxide by using lignin amine as a template molecule. Background technique [0002] The amount of lignin existing in nature is quite large, pulp and paper waste liquid contains a large amount of lignin, if not recycled [0003] It is not only a waste of resources, but also causes serious environmental pollution hazards. In recent years, in the technical research of nanomaterial preparation, the use of template technology has attracted people's attention. As long as a suitable template is prepared, the size and shape of the pores of nanomaterials can be controlled. The use of new templates greatly enriches the types of nanomaterials. According to the characteristics of lignin, such as non-toxicity, low cost, and environmental friendliness, lignin modified by amination has a mesh structure, and its application as template ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02B82Y30/00
Inventor 王晓红谢文静郝臣周宏远张一珂傅小奇白毅张和贵
Owner JIANGSU UNIV
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