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Method for preparing Pt-C3N4-TiO2 three-component visible light photocatalyst

A pt-c3n4-tio2 and photocatalyst technology, which is applied in the field of visible light photocatalyst preparation, can solve the problems such as the preparation of ternary composite photocatalysts that have not yet occurred, and achieves the effects of stable reaction, simple reaction conditions and easy to scale up production.

Inactive Publication Date: 2013-08-07
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many studies on binary composite photocatalysts at home and abroad, but there is no preparation of Pt-C 3 N 4 -TiO 2 Report on Ternary Composite Photocatalyst

Method used

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  • Method for preparing Pt-C3N4-TiO2 three-component visible light photocatalyst
  • Method for preparing Pt-C3N4-TiO2 three-component visible light photocatalyst

Examples

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Embodiment Construction

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

[0013] Weigh 3.0000g of melamine and place it in a 50 mL porcelain crucible, put it in 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 0.1000 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 ...

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Abstract

The invention relates to a method for preparing a Pt-C3N4-TiO2 three-component visible light photocatalyst. The method is characterized by comprising the steps of: firstly heating melamine up to the temperature of 540 DEG C so as to be cracked into graphite-like nitrogen carbide (g-C3N4); then carrying out ultrasonic mixing so as to enable P25 to be loaded with g-C3N4; and finally synthesizing by using an immobilized sol process, thereby preparing the target product. The composite photocatalyst with the structure has high visible light activity, thus the photocatalyst becomes an important sewage treatment agent with a potential research value. The method has the advantages that the reaction conditions are simple, the reaction is mild and stable, and the production enlargement is facilitated.

Description

technical field [0001] The invention relates to a preparation method of a visible light photocatalyst, in particular to a Pt-C 3 N 4 -TiO 2 A preparation method of a ternary visible light photocatalyst. Background technique [0002] Pt-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 Pt-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; for 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 product was obtained...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24
Inventor 吴小琴柳泽斌马文天李帅龙胡秋明廖黎明李建
Owner NANCHANG HANGKONG UNIVERSITY
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