Tin-silver co-doped nano-zinc oxide as photocatalyst and preparation method thereof

A nano-zinc oxide, photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of unfavorable industrial production applications and high production costs, To achieve the effect of reducing the amount of silver, high crystallinity, and reducing production costs

Inactive Publication Date: 2017-02-22
SOUTHWEST UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Lu Yihong and others prepared Ag-doped ZnO powders with uniform particles by modified polymer-network gel method (Enhanced ultraviolet photocatalytic activity of Ag / ZnOnanoparticles synthesized by modified polymer-network gel method[J].Journal of Nanoparticle Research , 2015,17(9):1-15.), and confirmed that the doping of silver improves the photocatalytic activity of nano-ZnO to a certain extent, but because silver is a precious metal, doping with silver will bring a relatively high production cost. High problem, not conducive to industrial production application

Method used

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  • Tin-silver co-doped nano-zinc oxide as photocatalyst and preparation method thereof
  • Tin-silver co-doped nano-zinc oxide as photocatalyst and preparation method thereof
  • Tin-silver co-doped nano-zinc oxide as photocatalyst and preparation method thereof

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Effect test

Embodiment 1

[0026] The preparation method of tin-silver co-doped nano zinc oxide as photocatalyst in the present embodiment is as follows:

[0027] (1) Tin doping

[0028] At indoor natural temperature (the inventor once prepared nano-ZnO in different seasons: summer, autumn and winter, and indoor temperature has no influence on the experimental results), zinc nitrate (5.9979g) of 0.01996mol, 0.00004mol tin tetrachloride were mixed under stirring (0.0142g), 12g of glucose, 0.03mol of tartaric acid were dissolved in 60mL of deionized water to form a solution, then 0.15mol of acrylamide and 0.03mol of methylenebisacrylamide were added in sequence, and stirred evenly to obtain a colorless transparent sol. The obtained colorless transparent sol was heated in a water bath at 90°C for 1 hour to obtain a white wet gel. The wet gel was placed in a blower constant temperature drying oven and dried at 120°C for 24 hours to obtain a xerogel. The xerogel was ground into After the powder is sintered ...

Embodiment 2

[0035] The preparation method of tin-silver co-doped nano zinc oxide as photocatalyst in the present embodiment is as follows:

[0036] (1) Tin doping

[0037]At indoor natural temperature (the inventor once prepared nano-ZnO in different seasons: summer, autumn and winter, and indoor temperature has no effect on the experimental results), 0.0199mol of zinc nitrate (5.9789g), 0.0001mol of tin tetrachloride were mixed , 12 g of glucose and 0.03 mol of tartaric acid were dissolved in 60 mL of deionized water to form a solution, and then 0.15 mol of acrylamide and 0.03 mol of methylenebisacrylamide were added in sequence, and stirred evenly to obtain a colorless transparent sol. The obtained colorless transparent sol was heated in a water bath at 90°C for 1 hour to obtain a white wet gel. The wet gel was placed in a blower constant temperature drying oven and dried at 100°C for 24 hours to obtain a xerogel. The xerogel was ground into After the powder is sintered at 650°C for 5 ...

Embodiment 3

[0042] The preparation method of tin-silver co-doped nano zinc oxide as photocatalyst in the present embodiment is as follows:

[0043] (1) Tin doping

[0044] At indoor natural temperature (the inventor once prepared nano-ZnO in different seasons: summer, autumn and winter, and indoor temperature has no influence on the experimental results), zinc nitrate (5.9498g) of 0.0198mol, 0.0002mol tin tetrachloride were mixed under stirring (0.0708g), 12g of glucose, 0.03mol of tartaric acid were dissolved in 60mL of deionized water to form a solution, and then 0.15mol of acrylamide and 0.03mol of methylenebisacrylamide were added in sequence and stirred evenly to obtain a colorless transparent sol. The obtained colorless transparent sol was heated in a water bath at 90°C for 1 hour to obtain a white wet gel. The wet gel was placed in a blower constant temperature drying oven and dried at 120°C for 24 hours to obtain a xerogel. The xerogel was ground into After the powder is sintered...

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Abstract

The invention discloses a preparation method of tin-silver co-doped nano-zinc oxide as a photocatalyst. The method comprises the steps that 1, zinc nitrate, tin tetrachloride, a complexing agent and glucose are dissolved in deionized water to form a solution, then acrylamide and methylene bisacrylamide are added in sequence, the solution is stirred to be uniform, heated in a water bath and stirred till white wet gel is formed, and the wet gel is dried, ground into powder and calcined to obtain tin doped nano-zinc oxide; 2, the tin doped nano-zinc oxide, silver nitrate, a complexing agent and glucose are dissolved in deionized water to form a solution, then acrylamide and methylene bisacrylamide are added in sequence, the solution is stirred to be uniform, heated in a water bath and stirred till brown wet gel is formed, and the wet gel is dried, ground into powder and calcined to obtain the tin-silver co-doped nano-zinc oxide. Through the preparation method, production cost is lowered while the photocatalytic activity of nano-zinc oxide is improved.

Description

technical field [0001] The invention belongs to the field of material synthesis of photocatalyst zinc oxide, in particular to a tin-silver co-doped nanometer zinc oxide and a preparation method thereof. Background technique [0002] The liquid phase method is a common method for preparing nano zinc oxide, and the liquid phase method is mainly divided into hydrothermal method, sol-gel method, and microemulsion method. The traditional sol-gel method has the advantages of mild reaction conditions, low processing temperature, narrow particle size distribution, high purity, and uniform dispersion of nanoparticles, but the mixing conditions of the reactants are relatively harsh, and the temperature, pH value and Mixing method, and the preparation cycle is long, the output is small, and it is easy to agglomerate during heat treatment, so it is difficult to realize large-scale industrial production. The polymer network gel method is proposed for the defects of the traditional sol-g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/66C02F1/30
CPCB01J23/66B01J35/004C02F1/30C02F2305/10
Inventor 徐明徐小楠刘禹彤陈雨
Owner SOUTHWEST UNIVERSITY FOR NATIONALITIES
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