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Method for preparing graphite phase carbon nitride nanosheet/titania nanotube array photocatalysis material

A technology of graphitic carbon nitride and nanotube arrays, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low catalytic efficiency of visible light, and achieve high-efficiency degradation and excellent visible light catalysis performance, ease of operation

Active Publication Date: 2016-08-03
CHINA JILIANG UNIV
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Problems solved by technology

[0005] Aiming at the problem of low catalytic efficiency of single carbon nitride nanosheets in visible light, the present invention provides a simple method for preparing photocatalytic materials of graphite-phase carbon nitride nanosheets / titanium dioxide nanotube arrays

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  • Method for preparing graphite phase carbon nitride nanosheet/titania nanotube array photocatalysis material
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  • Method for preparing graphite phase carbon nitride nanosheet/titania nanotube array photocatalysis material

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specific Embodiment approach 1

[0021] Specific embodiment 1: This embodiment is the simple preparation of graphite phase carbon nitride nanosheet / titanium dioxide nanotube array photocatalytic material, and the specific steps are as follows:

[0022] 1) Put 10g of melamine into a crucible with a lid, and place it in a muffle furnace at a temperature of 450-550°C for 2 to 4 hours, and a heating rate of 10°C / min. After the calcination is completed, it is naturally cooled to room temperature, and the obtained sample is ground into powder to prepare bulk graphite phase carbon nitride;

[0023] 2) Take 2g of the bulk graphite phase carbon nitride prepared in step 1 and add it to 30-50ml concentrated sulfuric acid and continue stirring for 8h. Then the mixture was slowly poured into 200ml deionized water, ultrasonically stripped for 6-10h, and then centrifuged at 1000rpm, the precipitate was washed repeatedly with deionized water for 5-15 times to obtain colloidal graphite phase carbon nitride nanosheets, and then Th...

specific Embodiment 2

[0027] Specific embodiment two: This embodiment is different from the specific embodiment one in that the calcination temperature in step one is 520°C. Others are the same as the first embodiment.

specific Embodiment 3

[0028] Specific embodiment three: This embodiment is different from specific embodiment one in that the number of rinses with deionized water in step two is 10 times. Others are the same as the first embodiment.

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Abstract

The invention discloses a method for preparing a graphite phase carbon nitride nanosheet / titania nanotube array photocatalysis material. The method comprises the following steps: step one, thermally condensing melamine to prepare graphite phase carbon nitride powder; step two, ultrasonically peeling bulk graphite phase carbon nitride to obtain a graphite phase carbon nitride nanosheet; step three, adding the carbon nitride nanosheet to electrolyte, and synthesizing graphite phase carbon nitride nanosheet / amorphous titania nanotube array by one step during anodic oxidation; step four, conducting heat treatment on a sample obtained by anodic oxidation to prepare a graphite phase carbon nitride nanosheet / titania nanotube array material. The graphite phase carbon nitride nanosheet / titania nanotube array photocatalysis material rapidly prepared by one step according to the method provided by the invention is economic and environmentally friendly; an obtained photocatalyst overcomes defects of titania nanotube array and bulk graphite phase carbon nitride, improves the utilization of visible light, reduces a recombination rate of photo-generated electron holes, and can implement the efficient photocatalytic degradation of organic pollutants under irradiation of visible light.

Description

Technical field [0001] The invention relates to a preparation method of a graphite phase carbon nitride nanosheet / titanium dioxide nanotube array photocatalyst material, and belongs to the technical field of photocatalytic environmentally friendly nanomaterials. Background technique [0002] The carbon nitride material has five allotropes, of which the graphite phase carbon nitride material is the most stable one. Since 2009, Antonietti et al. reported that graphite-phase carbon nitride can be used in the field of photocatalysis (Nat. Mater., 2009, 8, 76-80.), a non-metallic material with good stability, environmental protection, non-toxicity, and cheap raw materials It has received extensive attention in fields such as photocatalysis. The band gap of graphite phase carbon nitride is 2.7eV, which allows it to effectively absorb visible light and has a high utilization efficiency of sunlight. However, the bulk graphite phase carbon nitride prepared by the high temperature polyco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J21/06A62D3/17A62D101/26A62D101/28
CPCA62D3/17B01J21/063B01J27/24A62D2101/26A62D2101/28B01J35/39
Inventor 陈智周丹彤
Owner CHINA JILIANG UNIV
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