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Method for preparing metal loaded g-C3N4 photocatalyst

A photocatalyst, g-c3n4 technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of small specific surface area, fast photogenerated electron-hole recombination rate, and low utilization rate of visible light and other problems, to achieve the effect of uniform size and growth inhibition

Inactive Publication Date: 2019-11-05
AOWEI TIANJIN ENVIRONMENTAL PROTECTION TECH
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  • Application Information

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Problems solved by technology

However, g-C 3 N 4 The utilization rate of visible light is low, the specific surface area is small, and the photogenerated electron-hole recombination rate is fast, which limits the g-C 3 N 4 Promotion and application in the field of photocatalysis

Method used

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  • Method for preparing metal loaded g-C3N4 photocatalyst
  • Method for preparing metal loaded g-C3N4 photocatalyst

Examples

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Embodiment 1

[0016] g-C 3 N 4 The synthesis method of melamine is as follows: Weigh 10 g of melamine and transfer it into a porcelain crucible with a cover, raise the temperature to 550 ºC at a heating rate of 2 ºC / min, and keep it for 4 h; The yellow powder is ground for later use, and the resulting product is block g-C 3 N 4 ; Weigh 1.5 g of the above block g-C 3 N 4 , was added to 450 mL of ethanol aqueous solution, wherein the volume ratio of absolute ethanol and deionized water was 3:1; after the above mixed solution was sonicated for 10 h, the resulting yellow suspension was centrifuged at 3000 rpm for 10 minutes to remove untreated Stripped block g-C 3 N 4 , and then centrifuge the resulting milky white suspension at 10,000 rpm for 5 minutes, and dry the resulting light yellow precipitate at 80 ºC for 24 h.

[0017] Au / g-C 3 N 4 The synthetic method of is as follows: take layered g-C 3 N 4 Add to deionized water, sonicate and make it completely dispersed; add a certain am...

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Abstract

The invention discloses a method for preparing a metal loaded g-C3N4 photocatalyst. A M / g-C3N4 (M=Au or Ag) plasma photocatalyst is prepared through thermal polymerization and a microwave assisted alcohol thermal reduction method; and proven by a transmission electron microscope, Au nanoparticles synthesized by the microwave assisted alcohol thermal reduction method can be uniformly dispersed in the surface of g-C3N4 and form a heterostructure with the g-C3N4. According to the method, the size and content of metal nanoparticles in the metal loaded g-C3N4 photocatalyst can be simply and conveniently regulated and controlled. The method is simple and feasible and has a potential popularization value.

Description

technical field [0001] The invention relates to a metal loaded g-C 3 N 4 The preparation method of photocatalyst, specifically relates to a kind of two-step method to prepare metal nanoparticle loaded g-C 3 N 4 Methods. Background technique [0002] Graphite carbon nitride (g-C 3 N 4 ) as a novel metal-free polymer photocatalyst has received extensive attention. g-C 3 N 4 The bandgap energy of g-C is 2.7 eV. Due to its cheap raw materials, easy mass production, high stability and excellent light-absorbing properties, g-C 3 N 4 It has been widely researched and applied in the field of photolysis of water to produce hydrogen and oxygen and control of environmental pollutants. However, g-C 3 N 4 The utilization rate of visible light is low, the specific surface area is small, and the photogenerated electron-hole recombination rate is fast, which limits the g-C 3 N 4 Promotion and application in the field of photocatalysis. [0003] By compounding with precious me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J37/34
CPCB01J27/24B01J37/346B01J35/399B01J35/393B01J35/23B01J35/39
Inventor 陈昱贺克斌李维尊黄磊汤瑶鞠美庭
Owner AOWEI TIANJIN ENVIRONMENTAL PROTECTION TECH