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Golfball-shaped Ag/TiO2 composite porous micro-spheres and preparation method thereof

A technology of porous microspheres and golf balls, applied in the preparation of Ag/TiO2 composite microspheres, Ag/TiO2 composite porous microspheres with the shape of a golf ball and its preparation field, which can solve the problems of high cost, complicated process, and difficulty in mass production Continuous production and other issues to achieve the effect of low cost and simple process

Active Publication Date: 2018-11-02
湖州源沁新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at preparing Ag / TiO in the prior art 2 The process is complex, the cost is high, the shape is difficult to control, especially it is difficult to produce in large quantities, and so on. A golf ball-shaped Ag / TiO 2 Composite porous microsphere and preparation method thereof

Method used

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  • Golfball-shaped Ag/TiO2 composite porous micro-spheres and preparation method thereof
  • Golfball-shaped Ag/TiO2 composite porous micro-spheres and preparation method thereof
  • Golfball-shaped Ag/TiO2 composite porous micro-spheres and preparation method thereof

Examples

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Effect test

Embodiment 1

[0013] (1) Weigh 60g of potassium titanium oxalate and dissolve it in 1800ml of deionized water, add 0.8g of silver nitrate into 200mL of deionized water, and spray dry at 200°C through a spray dryer to prepare Ag / TiO 2 Precursor microspheres;

[0014] (2) Heat the precursor powder obtained in step (1) to 550°C at a heating rate of 10°C / min, keep it warm for 4 hours and cool it down, wash it three times with water and ethanol, and dry it at 60°C for 2 hours to prepare a golf ball-shaped Ag / TiO 2 Composite porous microspheres.

Embodiment 2

[0016] (1) Weigh 60g of potassium titanium oxalate and dissolve it in 1800ml of deionized water, add 1.6g of silver nitrate into 200mL of deionized water, and spray dry at 200°C through a spray dryer to prepare Ag / TiO 2 Precursor microspheres;

[0017] (2) Heat the precursor powder obtained in step (1) to 550°C at a heating rate of 10°C / min, keep it warm for 4 hours and cool it down, wash it three times with water and ethanol, and dry it at 60°C for 2 hours to prepare a golf ball-shaped Ag / TiO 2 Composite porous microspheres.

Embodiment 3

[0019] (2) Weigh 60g of potassium titanium oxalate and dissolve it in 1800ml of deionized water, add 0.4g of silver nitrate into 200mL of deionized water, and spray dry at 200°C through a spray dryer to prepare Ag / TiO 2 Precursor microspheres;

[0020] (2) Heat the precursor powder obtained in step (1) to 550°C at a heating rate of 10°C / min, keep it warm for 4 hours and cool it down, wash it three times with water and ethanol, and dry it at 60°C for 2 hours to prepare a golf ball-shaped Ag / TiO 2 Composite porous microspheres.

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Abstract

The invention discloses golfball-shaped Ag / TiO2 composite porous micro-spheres and a preparation method thereof. The golfball-shaped Ag / TiO2 composite porous micro-spheres are characterized in that the Ag / TiO2 composite porous micro-spheres are in the shapes of golfballs, the preparation method comprises the steps that cheap titanium potassium oxalate and silver nitrate are used as raw materials,through a spray drying technology, Ag / TiO2 precursor micro-spheres are obtained, after calcination, the golfball-shaped Ag / TiO2 composite porous micro-spheres are obtained through washing, and preparation and compounding of Ag and TiO2 are completed synchronously. The golfball-shaped Ag / TiO2 composite porous micro-spheres and the preparation method thereof have the advantages that the cheap titanium potassium oxalate and Ag are used as precursors, the cost is low, the spray drying technology is simple in process, and large-scale continuous production is feasible; the golfball-shaped Ag / TiO2 composite porous micro-spheres and the preparation method thereof have important significance in developing novel photocatalytic materials.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic functional materials, and relates to an Ag / TiO 2 The preparation method of composite microspheres, in particular, relates to a Ag / TiO 2 Composite porous microsphere and its preparation method. Background technique [0002] TiO 2 Green, environmentally friendly, cheap, stable structure, and excellent photocatalytic performance, but due to its wide band gap (3.2eV) and narrow spectral response range, it can only respond in the ultraviolet region. Therefore, TiO 2 As a photocatalytic material, there is a problem of low energy utilization; in addition, TiO 2 Photogenerated electrons-holes are easy to recombine, and the photocatalytic efficiency needs to be improved. Ag and TiO 2 Composite, can improve TiO 2 The photocatalyst absorbs visible light, inhibits the recombination of photogenerated electron-hole pairs, improves the photon quantum efficiency, and improves the stability ...

Claims

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Application Information

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IPC IPC(8): B01J23/50B01J35/08B01J35/10B01J37/08B01J13/04
CPCB01J13/043B01J23/50B01J37/082B01J35/51B01J35/39B01J35/615B01J35/647
Inventor 宋彩霞孙欣欣王德宝汪颖周艳红
Owner 湖州源沁新材料有限公司