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Chemical method for preparing copper oxide crystals with biological micro-nano structures by thermal decomposition

A technology of micro-nano structure and copper oxide, which is applied in the field of material chemistry, can solve the problems of large amount of reagents, complicated process, and high energy consumption, and achieve the effect of low cost, simple reaction principle, and good repeatability

Inactive Publication Date: 2011-07-06
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is to overcome the disadvantages of large amount of reagents, high cost, complicated process and high energy consumption in the current preparation method of nano-copper oxide.

Method used

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  • Chemical method for preparing copper oxide crystals with biological micro-nano structures by thermal decomposition
  • Chemical method for preparing copper oxide crystals with biological micro-nano structures by thermal decomposition
  • Chemical method for preparing copper oxide crystals with biological micro-nano structures by thermal decomposition

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. Preparation: For the pretreatment of cotton cloth, wash 50g of commercially available cotton cloth three times with tap water, flatten it and immerse it in a 1000ml beaker containing 800ml of 0.005mol / L sodium hydroxide aqueous solution, and heat it to Boil and keep boiling for 1h. Cool to room temperature, wash twice with 500-700ml distilled water, then pour 500-700ml distilled water, and ultrasonically clean 3 times with distilled water, 15min each time. Then, put the above-mentioned treated cotton cloth into 800ml mixed acid with the molar ratio of sulfuric acid and oxalic acid = 2: 1, and sonicate for 1 h, wherein the concentration of sulfuric acid is 2 mol / L, and let it stand for 24 h. Take out the cotton cloth, wash it twice with 500-700ml of distilled water, and then ultrasonically clean it with distilled water for 3 times, each time for 15 minutes. Finally, take the cotton cloth out of the distilled water, squeeze the water as dry as possible with clean twee...

Embodiment 2

[0048] 1, preparatory work: with embodiment 1;

[0049] 2. Reaction steps: Weigh CuSO 4 ·5H 2 Add 25g of O crystals to a clean beaker, add distilled water to heat and dissolve, transfer to a 200ml volumetric flask after cooling to make 0.5mol / L CuSO 4 solution. Weigh 0.3g of the treated cotton cloth and place it in 50ml of 0.5mol / L CuSO 4 Put the solution in a 100ml beaker, ultrasonically soak for 30min, and after aging for 24h, take out the cotton cloth, dry it at 80°C, and finally put it into a muffle furnace, set the temperature at 600°C, and heat up at a rate of 5°C / min. After 6 hours, it was naturally cooled to room temperature, and the obtained product was characterized by SEM and XRD.

[0050] 3, aftertreatment: with embodiment 1, obtain nano-CuO sample color and be black, scanning electron microscope photo sees diagram 2-1 , see 2-2 for the XRD pattern.

Embodiment 3

[0052] 1, preparatory work: with embodiment 1;

[0053] 2. Reaction steps: Weigh CuSO 4 ·5H 2 Add 25g of O crystals to a clean beaker, add distilled water to heat and dissolve, transfer to a 200ml volumetric flask after cooling to make 0.5mol / L CuSO 4 solution. Weigh 0.3g of the treated cotton cloth and place it in 50ml of 0.5mol / L CuSO 4 Put the solution in a 100ml beaker, ultrasonically soak for 30min, and after aging for 24h, take out the cotton cloth, dry it at 80°C, and finally put it into a muffle furnace, set the temperature at 700°C, and heat up at a rate of 5°C / min. After 6 hours, it was naturally cooled to room temperature, and the obtained product was characterized by SEM and XRD.

[0054] 3, aftertreatment: with embodiment 1, obtain nano-CuO sample, product color is black, scanning electron microscope photo sees Figure 3-1 , see 3-2 for the XRD pattern.

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Abstract

The invention discloses a chemical method for preparing copper oxide crystals with biological micro-nano structures. The method comprises the following steps of: (1) preparing a carrier, namely pretreating a product which contains biological fiber or is processed by biological fiber in nature to obtain a biological template serving as a carrier of copper sulfate, wherein the product is pretreated by the following steps of: preparing an NaOH solution, putting the product which contains biological fiber or is processed by biological fiber into the NaOH solution for soaking and boiling or water bath heating; ultrasonically cleaning with distilled water, putting the product into mixed acid in which the molar ratio of sulfuric acid to oxalic acid is 2:1 and ultrasonically treating for 1 hour, standing for 24 hours, taking the product out, ultrasonically cleaning with distilled water and drying at the temperature of 80 DEG C to obtain the biological template serving as the carrier, wherein the concentration of the sulfuric acid is 2 mol / L; (2) putting the biological template prepared in the step (1) into a copper sulfate solution for soaking and adsorbing copper sulfate; and (3) calcining the biological template which adsorbs copper sulfate to remove the biological template and obtain a product which is thermally-decomposed by the copper sulfate and serves as the copper oxide crystals with biological micro-nano structures.

Description

technical field [0001] The invention belongs to the technical field of material chemistry, and in particular relates to a chemical method for preparing copper oxide crystals with a biological micro-nano structure by using a biological template as a carrier through a simple thermal decomposition reaction. Background technique [0002] Copper oxide is an important inorganic functional material. Due to its excellent photoconductive and photochemical properties, it can be used as gas-sensing materials, storage materials, battery anode materials, etc.; in terms of sensors, it can be used as a coating film for sensors, which can Greatly improve the selectivity and sensitivity of the sensor. In recent years, due to the unusual properties of copper-containing oxides in the field of high-temperature superconductivity, copper-containing oxides have become important model compounds for explaining the spectral characteristics of complex oxides. In addition, it is also used as a coloran...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y40/00
Inventor 郑直薄盈盈贾会敏张艳鸽米立伟法文君李艳巧黄晚霞赵亚平
Owner XUCHANG UNIV
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