Preparation method and application of visible-light photo-catalyst

A photocatalyst and visible light technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, inorganic chemistry, etc., can solve the problems of no practical value and low catalytic activity, and achieve the improvement of photocatalytic hydrogen production rate, catalyst stability, The effect of high practical value

Inactive Publication Date: 2018-04-27
BENGBU MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the samples prepared under this condition are agglomerated bulk phases or stacked hollow spheres, with extremely low catalytic activity and no practical value.

Method used

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  • Preparation method and application of visible-light photo-catalyst
  • Preparation method and application of visible-light photo-catalyst
  • Preparation method and application of visible-light photo-catalyst

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Experimental program
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Effect test

Embodiment 1

[0024] The cyanuric chloride and sulfur simple substance S 8 According to the mass ratio of 3:15 mixed and fully ground for 3 hours to obtain a solid powder, the obtained solid powder requires cyanuric chloride and sulfur elemental S 8 Mix evenly, preferably with a particle size of 60 mesh or more; put the solid powder in a muffle furnace, and treat it at 450°C for 3 hours under a nitrogen atmosphere, and keep the nitrogen flow at 6L min -1 , naturally cooled to room temperature and then taken out to obtain the product and weigh it.

Embodiment 2

[0026] The cyanuric chloride and sulfur simple substance S 8 According to the mass ratio of 4:15 mixed and fully ground for 3 hours to obtain a solid powder, the obtained solid powder requires cyanuric chloride and sulfur element S 8 Mix evenly, preferably with a particle size of 60 mesh or more; put the solid powder in a muffle furnace, and treat it at 550°C for 4 hours under a nitrogen atmosphere, and keep the nitrogen flow at 6L min -1 , naturally cooled to room temperature and then taken out to obtain the product and weigh it.

Embodiment 3

[0028] The cyanuric chloride and sulfur simple substance S 8 According to the mass ratio of 4:10 mixed and fully ground for 3 hours to obtain a solid powder, the obtained solid powder requires cyanuric chloride and sulfur elemental S 8 Mix evenly, preferably with a particle size of 60 mesh or more; put the solid powder in a muffle furnace, and treat it at 450°C for 3 hours under a nitrogen atmosphere, and keep the nitrogen flow at 6L min -1 , naturally cooled to room temperature and then taken out to obtain the product and weigh it.

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Abstract

A preparation method of a visible-light photo-catalyst includes the following steps: 1) mixing and completely grinding cyanuric chloride and elementary sulfur S8 to prepare a solid powder; 2) placingthe solid powder in a muffle furnace and performing thermal treatment in nitrogen gas atmosphere, and naturally cooling the product to room temperature and taking out the product. The photo-catalyst is used for visible-light catalytic decomposition of water to prepare hydrogen gas. The elementary sulfur S8, at different temperatures, exists in different phases: at normal temperature, the elementary sulfur S8 is in solid phase; when temperature is increased to more than 115.2 DEG C, the elementary sulfur S8 is molten into liquid phase; and at 444.6 DEG C, the elementary sulfur S8 turns into gasphase. When the cyanuric chloride is heated with the elementary sulfur S8, the elementary sulfur S8, at 115.2-444.6 DEG C, is in liquid phase, so that the cyanuric chloride is equivalently polymerized in a sulfur solvent. Due to existence of sulfur, polymerization of the cyanuric chloride is accelerated, thus accelerating a deamination process. The carbon nitride visible-light photo-catalyst is two-dimensional carbon nitride having a hollow capsule structure and has excellent photo-catalytic activity. The preparation process is free of any template and subsequent treatment and can produce thephoto-catalyst in one step.

Description

technical field [0001] The present invention relates to photocatalyst, specifically a kind of preparation method and application of visible light catalyst Background technique [0002] Graphite phase carbon nitride photocatalyst is a new type of polymer semiconductor with graphitic phase and layered two-dimensional structure. Unlike other two-dimensional materials composed of transition metals, graphitic carbon nitride has the characteristics of simple chemical composition, low density, chemical inertness, biocompatibility, and easy structure adjustment. Since the first discovery that this polymer semiconductor has certain photocatalytic properties, a lot of research work has been carried out around optimizing the chemical structure of carbon nitride and regulating its morphology to improve its insufficient photocatalytic performance. So far, one-dimensional nanorods, two-dimensional nanosheets, three-dimensional hollow spheres, and three-dimensional multilevel nanospheres ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C01B21/082C01B3/04
CPCB01J27/24B01J35/004B01J35/1019C01B3/042C01B21/0605C01P2002/01C01P2002/20C01P2002/74C01P2004/20Y02E60/36
Inventor 陈艳
Owner BENGBU MEDICAL COLLEGE
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