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Preparation method of a supported double metal co-doped nano photocatalyst

A nano-photocatalyst, co-doping technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of cumbersome process and low yield, etc. Achieve the effect of no noble metal doping, low cost and time saving

Active Publication Date: 2018-11-23
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most of the synthesis methods are synthesized separately, and then compound the catalyst and the carrier, the process is cumbersome and the yield is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 FeCo-TiO 2 / MoS 2 preparation of

[0025] (1) Add 0.6 g of molybdenum disulfide powder, 0.2 mmol of iron salt and 0.2 mmol of cobalt salt into 3 mL of n-butyllithium solution, and stir for 12 hours under nitrogen protection at 60 °C to obtain the reacted solution;

[0026] (2) Wash the reacted solution in step (1) with a non-polar solvent, and then perform ultrasonic treatment in a water bath at 60 °C. After the treatment, wash the treated solution with a non-polar solvent, and dry it in vacuum to obtain iron , Molybdenum disulfide nanomaterials co-intercalated with cobalt;

[0027] (3) Add 500 mg of molybdenum disulfide nanomaterials co-intercalated with iron and cobalt prepared in step (2) into 5 mL of tetrabutyl titanate, stir for 1 hour, then slowly add 0.5 mL of hydrofluoric acid while stirring acid, then reacted in a reactor at 160°C for 18 hours;

[0028] (4) The reaction product obtained in step (3) was centrifuged and washed three times with ultra...

Embodiment 2

[0034] Example 2 FeCo-TiO 2 / MoS 2 preparation of

[0035] (1) Add 0.6 g of molybdenum disulfide powder, 1.0 mmol of iron salt and 1.0 mmol of cobalt salt into 5 mL of n-butyllithium solution, and stir for 24 hours under nitrogen protection at 30 °C to obtain the reacted solution;

[0036] (2) Wash the reacted solution in step (1) with a non-polar solvent, and then perform ultrasonic treatment in a water bath at 30 °C. After the treatment, wash the treated solution with a non-polar solvent, and dry it in vacuum to obtain iron , Molybdenum disulfide nanomaterials co-intercalated with cobalt;

[0037] (3) Add 200 mg of molybdenum disulfide nanomaterials co-intercalated with iron and cobalt prepared in step (2) into 5 mL of tetrabutyl titanate, stir for 1 hour, then slowly add 0.6 mL of hydrofluoric acid while stirring acid, then reacted in a reactor at 180°C for 20 hours;

[0038] (4) The reaction product obtained in step (3) was centrifuged and washed three times with ultrapu...

Embodiment 3

[0044] Example 3 FeCo-TiO 2 / MoS 2 Photocatalytic activity test of

[0045] A 500 W halogen tungsten lamp is used as the light source, and the distance from the photocatalytic reactor is about 10 cm. A filter is placed between the light source and the reactor to cut off the light with a wavelength less than 420 nm. 2 mg of FeCo-TiO prepared in Example 1 2 / MoS 2 Add it to 50 mL of methyl orange solution with a concentration of 0.1 mmol / L, ultrasonically disperse for 10 min, then place the material solution in a dark room and stir for 0.5 hour to ensure that the surface adsorption of the sample reaches the adsorption-desorption equilibrium, then stir under light react. Take a sample every 10-20 min, filter it with a filter membrane with a pore size of 0.45 µm, measure the absorbance of the filtrate at a wavelength of 462 nm with a UV-visible spectrophotometer, and calculate the methyl alcohol at different reaction times according to the proportionality between the concentra...

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Abstract

The invention discloses a preparation method of a loaded double metal co-doped nanometer photocatalyst without noble metal doping, low cost, simple preparation and high photocatalytic activity. In this method, iron and cobalt co-doped titanium dioxide nanosheets were in situ compounded on iron and cobalt co-intercalated molybdenum disulfide nanosheets, and iron and cobalt co-doped titanium dioxide nanocubes were in situ compounded molybdenum disulfide in one pot. The two-dimensional nanocomposite FeCo‑TiO2 / MoS2. The prepared FeCo‑TiO2 / MoS2 can be applied in the fields of photocatalytic water splitting for hydrogen production, photocatalytic degradation of organic pollutants, and preparation of solar photovoltaic cells. The invention belongs to the technical field of novel nano functional materials and green energy.

Description

technical field [0001] The invention relates to a preparation method of a nanometer photocatalyst, and the prepared photocatalyst can be applied to fields such as photocatalytic water splitting to produce hydrogen, photocatalytic degradation of organic pollutants, preparation of solar photovoltaic cells, and the like. The invention belongs to the technical field of novel nano functional materials and green energy. Background technique [0002] Photocatalyst is a substance that does not change itself under the irradiation of light, but can promote chemical reactions. For example, common chlorophyll is a typical photocatalyst, which can promote carbon dioxide and hydration in the air in the photosynthesis of plants. become oxygen and carbohydrates. The catalysis of photocatalysts is to convert light energy into energy required for chemical reactions under the irradiation of light that exists in nature. Photocatalysts can excite surrounding oxygen and water molecules into fre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051B01J23/75B01J23/745B01J21/06
CPCB01J21/063B01J23/745B01J23/75B01J27/051B01J35/39
Inventor 张勇张清雨张国庆任祥魏琴
Owner UNIV OF JINAN
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