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Preparation method and application of Z-type magnetic nanocomposite MoS2/CoFe2O4 photocatalyst

A technology of cobalt tetraoxoferrate and composite materials, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of catalyst recovery difficulties, waste, etc., and achieve improved photodegradation ability, The effect of increasing the number of cycles and increasing the recycling rate

Inactive Publication Date: 2017-11-17
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Summary
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  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem of difficulty in catalyst recovery and waste after the existing photocatalyst degrades organic dyes, and provides a preparation method and a its application

Method used

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  • Preparation method and application of Z-type magnetic nanocomposite MoS2/CoFe2O4 photocatalyst
  • Preparation method and application of Z-type magnetic nanocomposite MoS2/CoFe2O4 photocatalyst
  • Preparation method and application of Z-type magnetic nanocomposite MoS2/CoFe2O4 photocatalyst

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specific Embodiment approach 1

[0020] Specific embodiment one: the preparation method of a kind of Z-type magnetic nanocomposite molybdenum disulfide / cobalt ferrite photocatalyst of the present embodiment is specifically carried out according to the following steps:

[0021] 1. FeCl 3 ·6H 2 O and CoCl 2 ·6H 2 O is dispersed in ethylene glycol solution, and magnetically stirred for 8-15 minutes to obtain a clear mixed solution; then sodium acetate and polyethylene glycol are added to the clear mixed solution, continued magnetically stirred for 20-40 minutes, and then transferred to polytetrafluoroethylene In the liner, react at a temperature of 180-220°C for 8-12 hours, then cool naturally to room temperature, and use a magnet to separate and collect the black precipitate CoFe 2 o 4 , will black precipitate CoFe 2 o 4 First wash with deionized water for 3 to 5 times and then with ethanol for 3 to 5 times, and dry at a temperature of 50°C for 10 to 14 hours to obtain CoFe 2 o 4 powder; the FeCl 3 ·6H...

specific Embodiment approach 2

[0023] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the FeCl described in step one 3 ·6H 2 O and CoCl 2 ·6H 2 The molar ratio of O is 1:0.5. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0024] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the mass ratio of polyethylene glycol and sodium acetate described in step one is 1:3.5. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a preparation method and an application of a Z-type magnetic nanocomposite MoS2 / CoFe2O4 photocatalyst and aims to solve the problems that the catalyst is difficult to recover and is wasted after the existing photocatalyst degrades organic dyestuff. According to the method, CoFe2O4 magnetic nanoparticles and MoS2 nano-laminated structures are prepared with a simple solvothermal method and a simple hydrothermal method respectively, and the method has the advantages of being simple and efficient. The Z-type magnetic nanocomposite MoS2 / CoFe2O4 photocatalyst is used for deeply purifying organically polluted water.

Description

technical field [0001] The invention relates to a preparation method and application of a photocatalyst. Background technique [0002] Environmental pollution restricts the sustainable development of human society, and the degradation of organic pollutants in water is still an urgent problem to be solved. The semiconductor photocatalytic oxidation technology has the advantages of mild reaction conditions, easy preparation of catalysts, and no secondary pollution. It is an effective way to solve the problem of environmental pollution. At present, developing photocatalysts with high-efficiency visible light response and improving photon quantum efficiency has become a key topic in the field of photocatalysis. [0003] With the rise of the research boom of two-dimensional materials such as graphene, MoS 2 The study of two-dimensional sheet structure has also attracted extensive attention. MoS 2 The layers are maintained by relatively weak van der Waals forces, so they exhib...

Claims

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Application Information

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IPC IPC(8): B01J27/051C02F1/30C02F101/30
CPCC02F1/30B01J27/0515C02F2101/30C02F2305/10B01J35/33B01J35/40B01J35/39
Inventor 于洪文曾影
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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