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High-performance one-dimensional FeSe2-two-dimensional MoSe2 compound as well as preparation method and application thereof

A complex, 2moo4·2h2o technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of complex difficulties and large differences, and achieve the effect of ensuring the compound effect

Pending Publication Date: 2022-04-05
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, two-dimensional nanosheet MoSe 2 Synthesis conditions and one-dimensional nanorod-like FeSe 2 The difference is large, and it is difficult to obtain composites compatible with these two nanomaterials. Therefore, the present invention provides a mature and reliable method to prepare one-dimensional FeSe 2 - Two-dimensional MoSe 2 composite and studied its application in photocatalytic degradation of methylene blue dye, photoelectrochemical

Method used

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  • High-performance one-dimensional FeSe2-two-dimensional MoSe2 compound as well as preparation method and application thereof
  • High-performance one-dimensional FeSe2-two-dimensional MoSe2 compound as well as preparation method and application thereof
  • High-performance one-dimensional FeSe2-two-dimensional MoSe2 compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1g(NH 4 ) 2 MoO 4 2H 2 O, 2gSeO 2 , 3g sodium cetylbenzenesulfonate, 5g hydrazine hydrate, and 50g water are mixed according to the mass ratio of 1:2:3:5:50, and placed in a hydrothermal reaction kettle for hydrothermal reaction. The hydrothermal reaction temperature is 160°C , the constant temperature time is 12 hours; the solid-liquid mixture after the hydrothermal reaction is subjected to solid-liquid centrifugation, the liquid product is poured out, the solid product is taken out, washed alternately with deionized water and alcohol for 3 times, and then dried at 70°C for 4 hours; grind the dried product into powder to obtain two-dimensional nanosheet MoSe 2 ; the above 10g two-dimensional nanosheet MoSe 2 , 1gFeCl 3 , 2gNa 2 SeO 3 , 4g of cetyltrimethylammonium bromide, 4g of hydrazine hydrate and 50g of water are mixed according to the mass ratio of 10:1:2:4:4:50 to form a precursor solution, which is placed in a hydrothermal reaction kettle for hydrotherma...

Embodiment 2

[0030] 1g(NH 4 ) 2 MoO 4 2H 2 O, 3gSeO 2 , 5g sodium cetylbenzenesulfonate, 6g hydrazine hydrate, and 50g water are mixed according to the mass ratio of 1:3:5:6:50, and placed in a hydrothermal reaction kettle for hydrothermal reaction. The hydrothermal reaction temperature is 180°C , the constant temperature time is 14 hours; the solid-liquid mixture after the hydrothermal reaction is subjected to solid-liquid centrifugation, the liquid product is poured out, the solid product is taken out, washed alternately with deionized water and alcohol for 3 times, and then dried at 80°C for 5 hours; grind the dried product into powder to obtain two-dimensional nanosheet MoSe 2 ; the above 10g two-dimensional nanosheet MoSe 2 , 2gFeCl 3 , 3gNa 2 SeO 3 , 5g of cetyltrimethylammonium bromide, 6g of hydrazine hydrate and 50g of water are mixed according to the mass ratio of 10:2:3:5:6:50 to form a precursor solution, which is placed in a hydrothermal reaction kettle for hydrotherma...

Embodiment 3

[0037] 1g(NH 4 ) 2 MoO 4 2H 2 O, 4gSeO 2 , 6g sodium cetylbenzenesulfonate, 7g hydrazine hydrate, and 50g water are mixed according to the mass ratio of 1:4:6:7:50, and placed in a hydrothermal reaction kettle for hydrothermal reaction. The hydrothermal reaction temperature is 200°C , the constant temperature time is 16 hours; the solid-liquid mixture after the hydrothermal reaction is subjected to solid-liquid centrifugation, the liquid product is poured out, the solid product is taken out, washed alternately with deionized water and alcohol for 3 times, and then dried at 80°C for 6 hours; grind the dried product into powder to obtain two-dimensional nanosheet MoSe 2 ; the above 10g two-dimensional nanosheet MoSe 2 , 2gFeCl 3 , 4gNa 2 SeO 3 , 6g of cetyltrimethylammonium bromide, 8g of hydrazine hydrate and 50g of water are mixed according to the mass ratio of 10:2:4:6:8:50 to form a precursor solution, which is placed in a hydrothermal reaction kettle for hydrotherma...

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Abstract

The invention relates to a high-performance one-dimensional FeSe2-two-dimensional MoSe2 compound as well as a preparation method and application thereof. The method comprises the following steps: mixing (NH4) 2MoO4. 2H2O, SeO2, sodium hexadecyl benzene sulfonate, hydrazine hydrate and water to obtain a precursor solution, and putting the precursor solution into a hydrothermal reaction kettle for hydrothermal reaction to obtain two-dimensional nano flaky MoSe2; the preparation method comprises the following steps: mixing two-dimensional nano flaky MoSe2, FeCl3, Na2SeO3, hexadecyl trimethyl ammonium bromide, hydrazine hydrate and water to obtain a precursor solution, and putting the precursor solution into a hydrothermal reaction kettle for secondary hydrothermal reaction. The degradation rate and the photocurrent density of the material for photocatalytic degradation of methylene blue are relatively improved by 245% and 110% respectively, and the photocatalytic performance of the compound is obviously enhanced. The method is simple in process, easy to control and high in production efficiency.

Description

technical field [0001] The invention relates to a high photocatalytic performance one-dimensional FeSe 2 - Two-dimensional MoSe 2 Composite and its preparation method and application. Background technique [0002] MoSe 2 It is a new type of photoelectric material. It has been reported that two-dimensional nanosheet MoSe can be obtained by hydrothermal synthesis. 2 . This two-dimensional nanosheet MoSe 2 It has a large specific surface area and exhibits certain photoelectric conversion and catalytic properties. This two-dimensional nanosheet structure is also an ideal composite carrier, because of its large specific surface area, it can be easily composited with other nanomaterials. Often have better photoelectric conversion and catalytic performance. FeSe 2 It is a one-dimensional nanorod material, and it has not been reported that one-dimensional FeSe can be obtained 2 - Two-dimensional MoSe 2 composites, applicants found mainly because of the two-dimensional nanos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057B01J37/10C02F1/30C02F101/38C02F101/36
Inventor 熊小山张峻陈炫
Owner HANGZHOU DIANZI UNIV
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