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Method for controllably preparing novel ZnO/Ag recycled surface enhanced Raman active photocatalyst material

A technology of surface-enhanced Raman and photocatalytic materials, applied in the field of materials, can solve problems affecting the visible light catalytic activity of products, difficult to control product shape and size, single product function, etc., achieve high visible light catalytic activity, reduce experimental costs, The effect of expanding the scope of application

Inactive Publication Date: 2018-11-30
XUZHOU MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reaction speed of these synthetic methods is fast, and the shape and size of the product are difficult to control, which affects the visible light catalytic activity of the product.
In addition, there are few researches on the application of ZnO / Ag in other aspects, and the product has a single function.

Method used

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  • Method for controllably preparing novel ZnO/Ag recycled surface enhanced Raman active photocatalyst material
  • Method for controllably preparing novel ZnO/Ag recycled surface enhanced Raman active photocatalyst material
  • Method for controllably preparing novel ZnO/Ag recycled surface enhanced Raman active photocatalyst material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Zn(NO 3 ) 2 ·6H 2 O(10mmol) and NH 4 F (0.1mol) was dissolved in 80mL water and stirred for 15min, NaOH (15mmol) was added, and after stirring for 15min, the temperature was raised to 120°C and reacted for 10h, then naturally cooled to room temperature, filtered and precipitated, washed with deionized water and ethanol, and then Vacuum drying at 60°C for 6h gave ZnOHF (1.00g).

Embodiment 2

[0029] ZnCl 2 (10mmol) with NH 4 Dissolve F (0.1mol) in 50mL water and stir for 20min, add KOH (12mmol), continue stirring for 20min, heat up to 110°C and react for 12h, then naturally cool to room temperature, filter, wash with deionized water and ethanol for precipitation, and Vacuum drying at 70°C for 10 h gave ZnOHF (0.98 g).

Embodiment 3

[0031] ZnSO 4 (10mmol) with NH 4 F (0.1mol) was dissolved in 70mL of water and stirred for 18min, then LiOH (12mmol) was added, and after stirring for 18min, the temperature was raised to 130°C for 16h, and then naturally cooled to room temperature, filtered and washed with deionized water and ethanol. Vacuum drying at 70°C for 10 h gave ZnOHF (0.96 g).

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Abstract

The invention relates to a method for controllably preparing a novel ZnO / Ag recycled surface enhanced Raman active photocatalyst material. The method specifically comprises the following steps: addingZnOHF into an ethanol solution with a volume fraction of 5 to 10 percent, stirring for 10 to 15 minutes, adding a nitrate solution comprising PVP, continuously stirring for 10 to 15 minutes, adding sodium hydroide, continuously stirring for 10 to 15 minutes, heating to 180 DEG C, reacting for 12 hours, naturally cooling to the room temperature, and performing the after-treatment, thus obtaining the zinc oxide / silver (ZnO / Ag) recycled surface enhanced Raman active photocatalytic material.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a method for controllably preparing a novel ZnO / Ag renewable surface-enhanced Raman active photocatalytic material. Background technique [0002] Semiconductor nanomaterials have potential application prospects in solving environmental pollution problems and providing renewable energy. ZnO nanoparticles are considered to be the most promising photocatalyst materials due to their non-toxicity, low price, large specific surface area, excellent chemical and photostability, and photocatalytic activity for many chemical reactions. However, single-phase ZnO has a large wide bandgap (3.37eV), can only be excited by ultraviolet light, and has a low utilization rate of solar energy. In addition, the single-phase ZnO has a single function and cannot effectively detect the dyes in the environment, which is not conducive to its practical application. [0003] Ag loading can make ZnO ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/66B01J35/02B01J35/00
CPCB01J23/66B01J35/40B01J35/50B01J35/39
Inventor 黄庆利王丽丽王元有
Owner XUZHOU MEDICAL UNIV
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