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a mos 2 /srfe 12 o 19 Preparation method of composite magnetic photocatalyst

A srfe12o19, photocatalyst technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as difficult recycling, secondary pollution, etc., and achieve easy operation, high production efficiency, and high photocatalysis active effect

Inactive Publication Date: 2021-03-23
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide a kind of MoS 2 / SrFe 12 o 19 The preparation method of the composite magnetic photocatalyst, its core lies in the synthesis of a composite magnetic photocatalyst with excellent magnetic properties and stability, which can improve the MoS 2 At the same time of photocatalytic activity, it effectively solves the problem of difficult recycling and secondary pollution caused by it to the environment

Method used

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  • a mos <sub>2</sub> /srfe <sub>12</sub> o <sub>19</sub> Preparation method of composite magnetic photocatalyst
  • a mos <sub>2</sub> /srfe <sub>12</sub> o <sub>19</sub> Preparation method of composite magnetic photocatalyst
  • a mos <sub>2</sub> /srfe <sub>12</sub> o <sub>19</sub> Preparation method of composite magnetic photocatalyst

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Comparison scheme
Effect test

Embodiment 1

[0021] A kind of MoS 2 / SrFe 12 o 19 The preparation method of composite magnetic photocatalyst, concrete steps are as follows:

[0022] (1) SrFe 12 o19 preparation of

[0023] Weigh 0.7465g SrCl respectively 2 ·6H 2 O and 6.0545g FeCl 3 ·6H 2 O reagent was ultrasonically dissolved with 38mL deionized water to obtain mixed solution A; 8.736g NaOH reagent was weighed and dissolved ultrasonically with 20mL deionized water to obtain solution B; Add it dropwise to the mixed solution A, and keep stirring for 15 minutes until the solution is fully mixed to obtain SrFe 12 o 19 Precursor C: Pour precursor C into a 100mL hydrothermal kettle, react at 200°C for 24 hours, take it out, naturally cool to room temperature, filter with suction, and wash with deionized water until the filtrate is neutral, then place the filter cake at 80°C Dry in oven for 12h, take out and grind to get SrFe 12 o 19 .

[0024] (2)MoS 2 / SrFe 12 o 19 preparation of

[0025] Weigh 0.4319g MoO re...

Embodiment 2

[0027] A kind of MoS 2 / SrFe 12 o 19 The preparation method of composite magnetic photocatalyst, concrete steps are as follows:

[0028] (1) With the step (1) of embodiment 1.

[0029] (2)MoS 2 / SrFe 12 o 19 preparation of

[0030] Weigh 0.4319g MoO respectively 3 and 0.8746g KSCN reagent, added to 60mL deionized water, ultrasonic for 15min and mechanically stirred for 30min to make it fully mixed to obtain solution A; according to the theory, SrFe 12 o 19 The mass percentage in the composite is 10wt%, and the prepared SrFe 12 o 19 Add the powder into solution A, and continue to stir mechanically for 1 hour to obtain suspension B. Put the suspension B into a 100mL hydrothermal kettle, react at 200°C for 24 hours, take it out, cool to room temperature, filter with suction, and use Alternately washed several times with ionic water and absolute ethanol, dried the filter cake in an oven at 80°C for 12 hours, and obtained MoS after grinding 2 / SrFe 12 o 19 .

Embodiment 3

[0032] A kind of MoS 2 / SrFe 12 o 19 The preparation method of composite magnetic photocatalyst, concrete steps are as follows:

[0033] (1) With the step (1) of embodiment 1.

[0034] (2)MoS 2 / SrFe 12 o 19 preparation of

[0035] Weigh 0.4319g MoO respectively 3 and 0.8746g KSCN reagent, added to 60mL deionized water, ultrasonic for 15min and mechanically stirred for 30min to make it fully mixed to obtain solution A; according to the theory, SrFe 12 o 19 The mass percentage in the composite is 15wt%, and the prepared SrFe 12 o 19 Add the powder into solution A, and continue to stir mechanically for 1 hour to obtain suspension B. Put the suspension B into a 100mL hydrothermal kettle, react at 200°C for 24 hours, take it out, cool to room temperature, filter with suction, and use Alternately washed several times with ionic water and absolute ethanol, dried the filter cake in an oven at 80°C for 12 hours, and obtained MoS after grinding 2 / SrFe 12 o 19 .

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Abstract

A kind of MoS 2 / SrFe 12 O 19 The preparation method of composite magnetic photocatalyst belongs to the field of nano-inorganic catalytic materials. The present invention adopts hydrothermal method to first prepare the magnetic matrix SrFe 12 O 19 , and then prepared MoS 2 / SrFe 12 O 19 Composite magnetic photocatalyst. MoS 2 / SrFe 12 O 19 The composite magnetic photocatalyst has good crystallinity and good magnetic properties. Under the irradiation of a xenon lamp simulating sunlight, 50 mg of the prepared composite magnetic photocatalyst degraded 100 mL of rhodamine B solution with a concentration of 10 mg / L. The degradation rate within 90 minutes was 95.2%, and the average recovery rate of the catalyst was 67%. The preparation process of the invention is simple, easy to control, has high production efficiency and low cost, and the use process is green and environmentally friendly, and has outstanding advantages in the treatment of industrial organic dye wastewater.

Description

technical field [0001] The present invention relates to a kind of MoS 2 / SrFe 12 o 19 The invention discloses a preparation method of a composite magnetic photocatalyst, which belongs to the technical field of inorganic environment-friendly catalytic materials. Background technique [0002] Photocatalysis of nanomaterials, as an emerging research field covering multiple disciplines, has become a hot research direction in solving fresh water pollution, industrial wastewater treatment and clean energy production technology. Among them, molybdenum disulfide (MoS 2 ) represented by transition metal sulfides, with their superior physical and chemical properties, are widely used in metal lubrication, lithium battery photodiodes, energy storage and conversion, etc. At the same time, MoS 2 It has a layered structure and semiconductor properties similar to graphite. It has the characteristics of large specific surface area and strong adsorption capacity. MoS with different cryst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051B01J37/10C02F1/30C02F101/30
CPCC02F1/30B01J27/0515B01J37/10C02F2305/10C02F2101/308B01J35/33B01J35/39
Inventor 徐龙君芦媛刘成伦
Owner CHONGQING UNIV
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