Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of photochemical preparation method of cus photocatalyst

A photocatalyst and photochemical technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as poor catalytic activity, achieve low cost, good application prospects, and mild reaction conditions Effect

Active Publication Date: 2016-01-06
SOUTH CHINA NORMAL UNIVERSITY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these catalysts have catalytic activity only under ultraviolet light irradiation, and the catalytic activity is not very good.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of photochemical preparation method of cus photocatalyst
  • A kind of photochemical preparation method of cus photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] A photochemical preparation method of CuS photocatalyst includes the following steps:

[0018] 1) Put CuSO 4 Solution, Na 2 S 2 O 3 .5H 2 The O solution is evenly mixed to obtain a mixed solution;

[0019] 2) Put the mixed solution in a petri dish, cover the petri dish with plastic wrap, and after sufficient ultraviolet irradiation, a thin film will be formed on the surface of the mixed solution, and a precipitate will be formed in the mixed solution;

[0020] 3) Remove the film, and then take out the sediment in the mixed solution;

[0021] 4) Wash, centrifuge, dry and grind the removed sediment.

[0022] In step 1), CuSO 4 CuSO in solution 4 , Na 2 S 2 O 3 ·5H 2 Na in O solution 2 S 2 O 3 .5H 2 The molar ratio of O is 0.25-7:1.

[0023] In step 1), CuSO 4 The concentration of the solution is 0.05~1mol / L; Na 2 S 2 O 3 .5H 2 The concentration of O solution is 0.09~0.12mol / L.

[0024] In step 2), the UV irradiation time is 10-12h.

[0025] In step 2), the light source for ultraviolet...

Embodiment 1

[0029] A photochemical preparation method of CuS photocatalyst includes the following steps:

[0030] (1) Add 0.100mol CuSO 4 Add to deionized water and sonicate to obtain CuSO 4 Solution.

[0031] (2) Add 0.010mol of Na 2 S 2 O 3 ·5H 2 O is added to deionized water to dissolve to make Na 2 S 2 O 3 ·5H 2 O solution.

[0032] (3) Put CuSO 4 Add solution to Na 2 S 2 O 3 ·5H 2 In the O solution, add water to 100mL, mix well, transfer it to the petri dish, and cover the petri dish with plastic wrap.

[0033] (4) Transfer the mixed solution and place it under an ultraviolet lamp for irradiation. Under the light irradiation reaction, a thin film is formed on the surface of the solution and precipitates are formed in the solution; among them, the power of the ultraviolet lamp is 8W, the dominant wavelength is 256nm, and the ultraviolet lamp and the mixed liquid 5cm apart, the irradiation intensity is 1.01mW / cm 2 .

[0034] (5) After 12 hours, use a glass slide to remove the film, and then col...

Embodiment 2

[0043] This embodiment relates to a method for preparing a CuS photocatalyst, which is a method for preparing a CuS photocatalyst by photochemistry, which is specifically carried out as follows:

[0044] (1) Add 0.070mol CuSO 4 Add to deionized water and sonicate to obtain uniform CuSO 4 Solution.

[0045] (2) Add 0.010mol of Na 2 S 2 O 3 ·5H 2 O is dissolved in deionized water to make Na 2 S 2 O 3 ·5H 2 O solution.

[0046] (3) Put CuSO 4 Add solution to Na 2 S 2 O 3 ·5H 2 In the O solution, add water to 100mL. After mixing the solution evenly, transfer the solution to the Petri dish, and cover the Petri dish with plastic wrap.

[0047] (4) Transfer the mixed solution to an ultraviolet light source and irradiate it. Under the light irradiation reaction, a thin film is formed on the surface of the solution and precipitates are formed in the solution; among them, the power of the ultraviolet lamp is 8W, the main wavelength is 256nm, and the ultraviolet lamp is The distance between the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a photochemical preparation method of CuS photocatalyst, comprising the following steps: 1) uniformly mixing CuSO4 solution and Na2S2O3·5H2O solution to obtain a mixed solution; 2) placing the mixed solution in a petri dish, and putting a lid on the petri dish After putting on plastic wrap and carrying out sufficient ultraviolet irradiation, will a thin film be formed on the surface of the mixed solution? , forming a precipitate in the mixed solution; 3) Pick up the film and remove it, and then take out the precipitate in the mixed solution; 4) Wash, centrifuge, dry and grind the taken out precipitate finely. The present invention uses CuSO4 and Na2S2O3? ·5H2O is used as raw material, synthesized by photochemical method, using ultraviolet light source as irradiation light source, and post-treatment can be used to prepare CuS photocatalyst. The preparation method uses few types of raw materials, low cost, mild reaction conditions, can react at room temperature, is pollution-free and environmentally friendly. The prepared CuS photocatalyst has the characteristics of excellent photocatalytic performance and stable properties. It has a good application prospect in degrading organic pollutants.

Description

technical field [0001] The invention relates to a photochemical preparation method of CuS photocatalyst. Background technique [0002] Photocatalytic technology has the characteristics of simple process, low energy consumption, easy control of operating conditions and complete degradation of pollutants. It is considered to be an environmentally friendly new technology with good development prospects. [0003] As a good semiconductor material, CuS is not only a multifunctional synthetic material with good chemical stability, but also a recently discovered new material with tunable and high-efficiency visible light catalytic activity. Conventional nano-semiconductor synthesis mainly focuses on the following methods: hydrothermal method, room temperature solid phase method, ultrasonic method, surfactant control, microemulsion method, sol-gel method, non-aqueous solvent method, electrochemical deposition and other methods , These methods all have the disadvantages of complex op...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04C01G3/12C02F1/30
Inventor 孙丰强范采凤吴准超沈帆陈奕霞李仲亮
Owner SOUTH CHINA NORMAL UNIVERSITY