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Glass fiber loading cuprous oxide visible light catalyst and application thereof

A glass fiber and cuprous oxide technology is applied in the field of photocatalysis, which can solve the problems of incompatibility and small specific surface area of ​​glass slides, and achieve the effects of uniform loading, high practical value and improving catalytic activity.

Inactive Publication Date: 2013-07-10
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the surface of the conductive glass is covered with a layer of fluorine-doped tin dioxide, and the specific surface area of ​​the glass is too small, it is not suitable for use as a glass carrier for photocatalysts.

Method used

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  • Glass fiber loading cuprous oxide visible light catalyst and application thereof
  • Glass fiber loading cuprous oxide visible light catalyst and application thereof
  • Glass fiber loading cuprous oxide visible light catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 5 grams of glass fiber with a nominal diameter of 24 microns that has been cleaned and dried with detergent, distilled water and ethanol. Add 40 grams of 1 mol / L glucose aqueous solution to a beaker containing 20 grams of 1 mol / L copper nitrate aqueous solution, and stir to obtain a colorless and transparent solution. Place a beaker containing 200 grams of 1mol / L NaOH solution in a constant temperature water bath at 50 °C. Soak the glass fiber in the above colorless and transparent solution for 30 seconds, then take out the glass fiber and soak it in a NaOH solution at 50°C for 30 seconds, then take out the glass fiber and soak and rinse it in 300 grams of distilled water for 10 seconds. The above process is cycled 20 times, soaked in 95% ethanol solution for 30 seconds to remove water, and the glass fiber is dried at 65 °C to obtain the loaded golden yellow Cu 2 O film glass fiber. Cu 2 The O load rate is 2.85%.

[0024] The rest of the conditions are the same as ...

Embodiment 2

[0031] Weigh 5 grams of glass fiber with a nominal diameter of 24 microns that has been cleaned and dried with detergent, distilled water and ethanol. With 20 grams of 1 mol / L CuSO 4 Add 40 grams of 1mol / L Na in the beaker of the solution 2 S 2 O 3 The solution is stirred to obtain a colorless and transparent solution. Place a beaker containing 200 grams of 1mol / L NaOH solution in a constant temperature water bath at 50 °C. Soak the glass fiber in the above colorless and transparent solution for 30 seconds, then take out the glass fiber and soak it in a NaOH solution at 60°C for 30 seconds, then take out the glass fiber and soak and rinse in distilled water for 10 seconds. The above process is cycled 20 times, soaked in 95% ethanol solution for 30 seconds to remove water, and the glass fiber is dried at 62 °C to obtain a golden yellow Cu 2 O film glass fiber. Cu 2 The O load rate is 4.01%. The glass fiber prepared in this embodiment supports Cu 2 O SEM picture see figure 1 ....

Embodiment 3

[0036] Weigh 5 grams of glass fibers with a nominal diameter of 30 microns that have been cleaned and dried with detergent, distilled water and ethanol. Add 40 grams of 1 mol / L hydroxylamine hydrochloride aqueous solution to a beaker containing 20 grams of 1 mol / L copper acetate solution and stir to obtain a colorless and transparent solution. Place a beaker containing 200 grams of 1mol / L NaOH solution in a constant temperature water bath at 50 °C. Soak the glass fiber in the above colorless and transparent solution for 30 seconds, then take out the glass fiber and soak it in the NaOH solution at 65°C for 30 seconds, then take out the glass fiber and soak and rinse in distilled water for 10 seconds. The above process is cycled 20 times, soaked in 95% ethanol solution for 30 seconds to remove water, and the glass fiber is dried at 67 °C to obtain the loaded golden yellow Cu 2 O film glass fiber. Cu 2 The O load ratio is 3.91%.

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Abstract

The invention relates to a glass fiber loading cuprous oxide visible light catalyst and an application thereof, belonging to the photocatalysis technology. The cuprous oxide load rate is 2.0 to 5.5 percent. The glass fiber load cuiprous oxide visible light catalyst is prepared by the following steps of: adding 40 to 42 parts by weight of reagent which is capable of reducing Cu<2+> to Cu+ into 20 parts of aquatic solution with the Cu2+ concentration of 0.5 to 2.0 mol / L which is identical to the concentration of the reagent to obtain a transparent solution; preserving heat of 190 to 210 parts by weight of NaOH solution with the concentration of 0.5 to 2.0 mol / L at the temperature of 48 to 68 DEG C; and putting the glass fibers with the diameter of 20 to 30 microns into the transparent solution for 28 to 32s and then putting into the NaOH solution for 28 to 32s, finally rinsing the glass fibers in the distilled water for 9 to 11s to complete one circle; after 18 to 40 circles, dehydrating the glass fibers and drying at the temperature of 60 to 68 DEG C to obtain a product. The glass fiber loading cuprous oxide visible light catalyst is used for degrading pollutants in air or water. The photocatalysis activity is high, copper dioxide is uniformly and firmly loaded on the surface of the glass fibers, and a high practical value can be realized.

Description

Technical field [0001] The invention belongs to photocatalysis technology, and specifically relates to a glass fiber supported cuprous oxide visible light catalyst that can be used for photocatalytic reaction to remove pollutants in air or water and its use. technical background [0002] Cuprous oxide (Cu 2 O) is a typical p-type narrow band gap semiconductor functional material (Eg = 2.0 eV), with a large visible light region absorption coefficient, high visible light catalytic activity, and non-toxicity. Since 1998, Hara et al. reported Cu 2 After O can be used as a photocatalyst for water splitting by sunlight, its potential applications in solar energy conversion, electrode materials, and photocatalysis have attracted more attention. [0003] Due to the recycling defects of powder materials in photocatalytic applications, thin film materials have greater practical value. At present, many methods can be used to prepare nano Cu 2 O thin film, such as sol-gel method, thermal oxida...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J35/06B01J32/00B01D53/86C02F1/30
CPCY02A50/20
Inventor 张世鸿韩豫萍安宁王家强段发坤
Owner YUNNAN UNIV
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