Preparation method of nanometer platinum doping tungstic oxide with high catalytic activity under visible light

A high catalytic activity, tungsten trioxide technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to achieve a wide range of applications, high photocatalytic activity, effective utilization Effect

Inactive Publication Date: 2009-09-02
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an effective preparation method of nano-platinum-supported tungsten trioxide with high catalytic activity under visible light, aiming to solve the problem of low activity of tungsten oxide photocatalyst and improve the photocatalytic performance of photocatalyst. Activity, and expand the applicable field of photocatalyst

Method used

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  • Preparation method of nanometer platinum doping tungstic oxide with high catalytic activity under visible light
  • Preparation method of nanometer platinum doping tungstic oxide with high catalytic activity under visible light
  • Preparation method of nanometer platinum doping tungstic oxide with high catalytic activity under visible light

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Effect test

Embodiment 1

[0018] Embodiment 1, as figure 1 Shown, this example preparation method comprises the following steps:

[0019] 1) Pretreatment of tungsten trioxide particles, using WO 3 To represent,

[0020] Will commercially available WO 3 Weigh 10mg of the particles and add them to 50ml of absolute ethanol. After 0.5h of magnetic stirring at a speed of 500rpm, they are ultrasonically oscillated in an ultrasonic cleaner for 0.5h to increase the dispersion of tungsten oxide particles. Then it was centrifuged at 3000rpm for 5min, and dried in a vacuum oven for 5h at a drying temperature of 20°C. stand-by;

[0021] 2) Preparation of platinum-supported tungsten trioxide, using Pt / WO 3 To represent,

[0022] Weigh 50mg of pretreated WO 3 Add it into a glass test tube, then add 5ml of aqueous methanol solution with a volume ratio of 2:1-1:2 and a chloroplatinic acid solution (H 2 PtCl 6 ·6H 2 O) 10 μl was pipetted into a test tube. A magnetic stirring bar was added, and the magnetic s...

Embodiment 2

[0025] Embodiment 2, as figure 1 Shown, this example preparation method comprises the following steps:

[0026] 1) Pretreatment of tungsten trioxide particles, represented by WO3,

[0027] Will commercially available WO 3 Weigh 300 mg of the particles and add them to 100 ml of methanol, and then magnetically stir at 1000 rpm for 1 hour, and then ultrasonically oscillate for 2 hours in an ultrasonic cleaner to increase the dispersion of tungsten oxide particles. Then centrifuge at 8000rpm for 15min, and dry in a vacuum oven for 20h at a drying temperature of 100°C. stand-by;

[0028] 2) Preparation of platinum-supported tungsten trioxide, using Pt / WO 3 To represent,

[0029] Weigh 200mg of pretreated WO 3 Add it into a glass test tube, then add 20ml of methanol aqueous solution with a volume ratio of 2:1-1:2 and a chloroplatinic acid solution (H 2 PtCl 6 ·6H 2 O) 200 μl was pipetted into a test tube. A magnetic stirring bar was added, and the magnetic stirring was per...

Embodiment 3

[0032] Embodiment 3, as figure 1 Shown, this example preparation method comprises the following steps:

[0033] 1) Pretreatment of tungsten trioxide particles, using WO 3 To represent,

[0034] Will commercially available WO 3 Weigh 150mg of the particles and add them to 75ml of isopropanol. After magnetic stirring at 750rpm for 0.75h, then ultrasonically vibrate for 1.25h in an ultrasonic cleaner to increase the dispersion of tungsten oxide particles. Then it was centrifuged at 5500rpm for 10min, and dried in a vacuum oven for 12h at a drying temperature of 60°C. stand-by;

[0035] 2) Preparation of platinum-supported tungsten trioxide, using Pt / WO 3 To represent,

[0036] Weigh 125mg of pretreated WO 3 Add in the glass test tube, then the methanol aqueous solution 12ml that the volume ratio is 2:1-1:2 and the chloroplatinic acid solution (H 2 PtCl 6 ·6H 2 O) 105 μl was pipetted into a test tube. A magnetic stirring bar was added, and the magnetic stirring was perf...

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Abstract

The invention relates to a preparation method of nanometer platinum doping tungstic oxide with high catalytic activity under visible light, which aims at solving the difficulty of low activity of tungsten oxide photocatalyst and improving the photocatalytic activity of the photocatalyst and expanding the application field of the photocatalyst. The technical scheme is achieved as follows: the preparation method comprises the following steps: firstly, the preliminary treatment of tungstic oxide particles, shown by WO3; secondly, the preparation of the platinum doping tungstic oxide, shown by Pt/WO3; and thirdly, the illumination reaction. The invention can be used for removing the pollutant in air and water, such as dye wastewater emitted by a dye factory with serious environment pollution.

Description

technical field [0001] The invention relates to a preparation method of nano-platinum supported tungsten trioxide with high catalytic activity under visible light. It is suitable for removing pollutants in the air and water, such as dye wastewater discharged from printing and dyeing factories with serious environmental pollution. Background technique [0002] Among various pollutants, dye wastewater has the characteristics of complex composition, high chroma, large discharge, high toxicity, and poor biodegradability, which has always been a difficult problem in wastewater treatment. At present, the physical and chemical decolorization method and suction filtration-incineration method commonly used at home and abroad have relatively large limitations. Therefore, it is very necessary to explore new ways and methods. Nano-TiO 2 It is a high-efficiency and energy-saving photocatalytic functional material. It has become an ideal material to solve energy and environmental probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/652C02F1/30C02F103/30
CPCY02W10/37
Inventor 王騊王晟刘阳陈文兴
Owner ZHEJIANG SCI-TECH UNIV
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