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Preparation method of modified titanium dioxide photocatalysts of platinum metal and fluorin ions

A titanium dioxide and photocatalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, non-metallic elements, etc., can solve the problem of low hydrogen efficiency and achieve the effect of increasing the amount of hydrogen and speeding up the rate

Inactive Publication Date: 2013-04-24
HOHAI UNIV
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Problems solved by technology

The shortcomings that still need to be improved in the current photolysis technology are: the efficiency of hydrogen production is not high
However, at present, there is no research report on the improvement of the degradation rate of organic matter and the rate and efficiency of hydrogen production by adding fluoride ions in photocatalysis. At present, such research is still blank.

Method used

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  • Preparation method of modified titanium dioxide photocatalysts of platinum metal and fluorin ions
  • Preparation method of modified titanium dioxide photocatalysts of platinum metal and fluorin ions
  • Preparation method of modified titanium dioxide photocatalysts of platinum metal and fluorin ions

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example 1

[0022] Photodeposition preparation method of modified photocatalyst: first take 4.71g Degussa P25 TiO 2 The powder is placed in a glass container, and 100mL of water is added to form TiO 2 suspension; then 24 μmol aqueous chloroplatinic acid hexahydrate was added to TiO 2 Add 1 mol of methanol to the suspension, and irradiate for 30 minutes under a 200W high-pressure mercury lamp. After the reaction is finished, use a No. 5 sand core funnel and vacuum to filter, and then wash and filter the product with deionized water. Then the Pt / TiO made 2 The powder is dropped into the NaF solution, wherein the NaF solution is to dissolve 10mmol NaF in 100ml H 2 Sodium fluoride solution prepared in O, adding hydrofluoric acid to adjust the pH of the suspension between 3.0-3.5, soaking for 5 h and then filtering, and the collected TiO 2 The powder was placed in an oven, dried at 100 °C for 1.5 h, and then fired at 300 °C for 1 h. The prepared TiO was washed with distilled water 2 powd...

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Abstract

The invention discloses a preparation method of modified titanium dioxide photocatalysts of platinum metal and fluorin ions. The preparation method uses a photolysis sedimentation method to obtain the modified TiO2 photocatalysts of the platinum metal, then uses an impregnation-drying method to attach the platinum (Pt) ions and the fluorin ions on the surfaces of the TiO2 photocatalysts, and uses an ignition mode to prepare and obtain the modified titanium dioxide photocatalysts of the platinum metal and the fluorin ions. The preparation method of the modified titanium dioxide photocatalysts of the platinum metal and the fluorin ions has the advantages that Pt ions and the fluorin ions are attached to the TiO2 photocatalysts, so that speed of photocatalytic degradation of organic matters is accelerated, speed of hydrogen generation is accelerated, and quantity of output hydrogen is remarkably increased.

Description

technical field [0001] The present invention relates to a titanium dioxide modified by platinum and fluoride ions (i.e. F-Pt / TiO 2 ) photocatalyst, which can degrade the reducing organic pollutants in the sewage during the photocatalytic process and can produce hydrogen significantly. Specifically, it is designed to eliminate the reducing organic pollutants in the sewage, especially the aromatic pollutants. Catalyst for hydrogen. Background technique [0002] Photocatalytic water splitting has attracted extensive attention due to its prospect of directly harnessing solar energy to produce clean energy carrier hydrogen through catalysis. The basic principle is that photocatalysts produce reactive photogenerated electrons and photogenerated holes under the action of light. Photogenerated electrons reduce water to generate hydrogen, while photogenerated holes oxidize water to generate oxygen. The deficiency that needs to be improved in the current photolysis technology is th...

Claims

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Application Information

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IPC IPC(8): B01J27/13C02F1/32C01B3/22C07C39/34
CPCY02W10/37
Inventor 李轶王玉明张文龙王大伟陈海蓉王晴
Owner HOHAI UNIV
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