Method for using ultrasonic mixing to prepare Ag-g-C3N4/TiO2 photocatalyst

A technology of ag-g-c3n4 and photocatalyst, which is applied in the field of preparation of visible light photocatalysts, can solve the problems of preparing ternary composite photocatalysts that have not yet appeared, and achieve the effects of stable reaction, mild reaction and simple reaction conditions

Inactive Publication Date: 2013-12-04
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

There are many studies on binary composite photocatalysts at home and abroad, but th...

Method used

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  • Method for using ultrasonic mixing to prepare Ag-g-C3N4/TiO2 photocatalyst
  • Method for using ultrasonic mixing to prepare Ag-g-C3N4/TiO2 photocatalyst

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Embodiment Construction

[0012] 1. Preparation of g-C by cleavage of melamine 3 N 4

[0013] Weigh 3 g of melamine into a 50 mL porcelain crucible, put it into a muffle furnace, and raise the temperature from room temperature to 540 o C, after keeping the temperature for 2 h, cool down naturally. After cooling to room temperature, take out to obtain g-C 3 N 4 , after weighing, grind the sample into powder and save it.

[0014] 2. Preparation of g-C by ultrasonic mixing 3 N 4 / TiO 2

[0015] Weigh 0.10 gTiO 2 Put four parts of solid powder in four 100 mL beakers, add 50 mL of absolute ethanol solution, and then add 0.002 g, 0.004 g, 0.008 g, 0.01 g of g-C 3 N 4 powder, namely to get g-C 3 N 4 / TiO 2 The mass ratios are: 2%, 4%, 8%, and 10%, respectively. Then ultrasonically mix for 15 min until the powder is completely dispersed. 80 o C dried for 5 h to evaporate to dryness to obtain a powder, which was ground and placed in a muffle furnace at 400 o C under calcination for 2 h. C...

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Abstract

A method for using ultrasonic mixing to prepare Ag-g-C3N4/TiO2 photocatalyst is characterized by including: heating reagent melamine to 540 DEG C to allow the same to split into g-C3N4; using ultrasonic mixing to allow P25 to load the g-C3N4; using solidifying sol process and silver-mixed synthesis to prepare the Ag-g-C3N4/TiO2 photocatalyst. Due to the fact that the Ag-g-C3N4/TiO2 photocatalyst is high in visible light activity, the photocatalyst can be served as a significant waste water processing agent with potential research value. The method is simple in reaction condition, mild and stable in reaction, and easy in mass production.

Description

technical field [0001] The invention relates to a preparation method of a visible light photocatalyst, in particular to a method for preparing Ag-g-C by ultrasonic mixing 3 N 4 / TiO 2 photocatalytic method. Background technique [0002] Ag-g-C 3 N 4 / TiO 2 The ternary visible light photocatalyst has become an important sewage treatment agent with potential research value because the composite photocatalyst containing this structure has visible light activity. There are many studies on binary composite photocatalysts at home and abroad, but there is no preparation of Ag-g-C 3 N 4 / TiO 2 A report on ternary composite photocatalysts. Therefore, there is no complete preparation method for synthesizing the ternary composite photocatalyst; in view of this fact, the present invention elaborates the whole preparation process: using melamine as raw material, followed by high temperature cracking, ultrasonic mixing, immobilized sol process to finally prepare The target...

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Application Information

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IPC IPC(8): B01J27/24B01J37/34
Inventor 吴小琴柳泽斌夏冬冬陈天泽
Owner NANCHANG HANGKONG UNIVERSITY
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