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Preparation method of g-C3N4 quantum dot and Ag quantum dot sensitization BiVO4 photocatalyst

A quantum dot sensitization, photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as low utilization of visible light, achieve good photocatalytic performance, and improve quantum efficiency. and photocatalytic efficiency, the preparation process is simple and easy to control

Inactive Publication Date: 2017-01-04
JILIN NORMAL UNIV
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Problems solved by technology

The photocatalyst produced by this method can overcome the low utilization rate of visible light of traditional photocatalysts and the problems that the photogenerated carriers of pure bismuth vanadate catalysts are prone to recombination and limit photocatalytic efficiency.

Method used

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  • Preparation method of g-C3N4 quantum dot and Ag quantum dot sensitization BiVO4 photocatalyst
  • Preparation method of g-C3N4 quantum dot and Ag quantum dot sensitization BiVO4 photocatalyst
  • Preparation method of g-C3N4 quantum dot and Ag quantum dot sensitization BiVO4 photocatalyst

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Embodiment Construction

[0043] a g-C 3 N 4 Quantum dots, Ag quantum dots sensitized leaf-shaped BiVO 4 Preparation method of photocatalyst. Its preparation method is characterized in that, using a hydrothermal method to Bi(NO 3 ) 3 and NaVO 3 2H 2 O is used as the raw material to prepare leaf-like BiVO by stirring and mixing uniformly in a certain proportion, adjusting the pH of the solution, and ultrasonically dispersing 4 nanostructure, and then through a certain mass ratio of Ag quantum dots and g-C 3 N 4 Quantum dots attached to leaf-like BiVO by co-precipitation method 4 on the nanostructure. Specific steps are as follows:

[0044] 1. Preparation of leaf-like BiVO 4 Nano-structure:

[0045] (1) Take Bi(NO 3 ) 3 ·5H 2 O and NaVO 3 2H 2 O molar ratio is 1:1, add appropriate amount of water (10 mL, 5 mL) respectively, and mix NaVO 3 The solution was added dropwise to Bi(NO 3 ) 3 solution, stirred for 30 min.

[0046] (2) Adjust the pH of the solution to 3 with nitric acid (2 mo...

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Abstract

The invention discloses a preparation method of a g-C3N4 quantum dot and Ag quantum dot sensitization BiVO4 photocatalyst. The method includes the following steps that 1, a leaf-shaped BiVO4 nanostructure is prepared; 2, Ag quantum dots adhere to the leaf-shaped BiVO4 nanostructure; 3, g-C3N4 quantum dots are prepared; 4, the leaf-shaped g-C3N4 quantum dot and Ag quantum dot sensitization BiVO4 photocatalyst is prepared. According to the preparation method, the preparation process is simple and easy to control, operation is convenient, cost is low, and the product is high in visible-light catalytic activity, so that the method has broad development prospects in the fields of preparation and application of composite nanomaterials.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to a g-C 3 N 4 Quantum dots, Ag quantum dots sensitized BiVO 4 Preparation method of photocatalyst. Background technique [0002] With the continuous development of society, people's demand for energy is increasing day by day, and their requirements for their own living environment are also getting higher and higher. However, the world today is facing two major problems of energy crisis and environmental pollution. This is mainly because the energy sources of countries in the world are mainly fossil energy sources, such as oil, coal, and natural gas. These energy sources are formed after a long process of hundreds of millions of years and are non-renewable resources. According to the current consumption rate, fossil energy will be exhausted in the near future. At the same time, the excessive use of fossil energy, the release of harmful gases, liquid and solid p...

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Application Information

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IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/50B01J35/39
Inventor 林雪奚阳赵芮
Owner JILIN NORMAL UNIV
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