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Two-dimensional adjustable SnSSe porous nanosheet as well as preparation and application thereof

A nanosheet, hydrothermal reaction technology, applied in nanotechnology, chemical instruments and methods, photometry using electrical radiation detectors, etc.

Pending Publication Date: 2022-04-08
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report to obtain SnSSe porous nanosheets with tunable two-dimensional selenium-sulfur ratio. The inventors found that if an atomic-level preparation scheme can be developed, it is expected to obtain two-dimensional adjustable SnSSe porous nanosheets.

Method used

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  • Two-dimensional adjustable SnSSe porous nanosheet as well as preparation and application thereof
  • Two-dimensional adjustable SnSSe porous nanosheet as well as preparation and application thereof
  • Two-dimensional adjustable SnSSe porous nanosheet as well as preparation and application thereof

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preparation example Construction

[0023] Provided is a method for preparing a two-dimensional tunable SnSSe porous nanosheet, which specifically includes the following steps:

[0024] Step (1). SnCl 4 、Na 2 SeO 3 , thiourea, oleic acid amide, hydrazine hydrate, sodium cetylbenzenesulfonate and water according to the mass ratio 2: (1 ~ 3): (1 ~ 3): (1 ~ 3): (4 ~ 6): (4~6): 50 mixed, placed in a hydrothermal reaction kettle for hydrothermal reaction;

[0025] Preferably, the hydrothermal reaction temperature is 180-200°C, and the constant temperature time is 18-24 hours;

[0026] Step (2). 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 70-80°C for 4 ~6 hours;

[0027] As preferably, the number of times of washing is 3 times;

[0028] Preferably, the drying temperature is 70-80°C, and the drying time is 4-6...

Embodiment 1

[0032] 2gSnCl 4 , 2gNa 2 SeO 3 , 2g thiourea, 2g oleic acid amide, 5g hydrazine hydrate, 5g sodium cetylbenzenesulfonate and 50g water are mixed according to the mass ratio of 2:2:2:2:5:5:50, and placed in a hydrothermal reaction kettle The hydrothermal reaction is carried out in the medium, the hydrothermal reaction temperature is 180 ° C, and the constant temperature time is 18 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, and deionized water, Alternative washing with alcohol for 3 times and drying at 70°C for 4 hours; the dried product was ground into powder to obtain two-dimensional tunable SnSSe porous nanosheets.

[0033] figure 1 The transmission electron microscope figure (TEM) of the two-dimensional tunable SnSSe porous nanosheet prepared for embodiment 1; As can be seen, the SnSSe prepared in embodiment 1 presents a porous nanosheet stru...

Embodiment 2

[0037] 2gSnCl 4 , 1gNa 2 SeO 3 , 1g of thiourea, 1g of oleic acid amide, 4g of hydrazine hydrate, 4g of sodium cetylbenzenesulfonate and 50g of water are mixed according to the mass ratio of 2:1:1:1:4:4:50, and placed in a hydrothermal reaction kettle The hydrothermal reaction is carried out in the medium, the hydrothermal reaction temperature is 200 ° C, and the constant temperature time is 20 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, and deionized water, Alternative washing with alcohol for 3 times and drying at 80°C for 5 hours; the dried product was ground into powder to obtain two-dimensional tunable SnSSe porous nanosheets.

[0038] Figure 4 For the X-ray diffraction spectrum (XRD) of the two-dimensional adjustable SnSSe porous nanosheet prepared in Example 2; as can be seen from it, the diffraction peak of the two-dimensional adjustable ...

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Abstract

The invention relates to a two-dimensional adjustable SnSSe porous nanosheet as well as preparation and application thereof. The method comprises the following steps: mixing SnCl4, Na2SeO3, thiourea, oleamide, hydrazine hydrate, sodium hexadecyl benzene sulfonate and water to obtain a precursor solution, and putting the precursor solution into a hydrothermal reaction kettle for hydrothermal reaction to obtain the two-dimensional adjustable SnSSe porous nanosheet. When the two-dimensional adjustable SnSSe porous nanosheet prepared by the preparation scheme is used as a photoelectrochemical photoelectric detector, the two-dimensional adjustable SnSSe porous nanosheet has relatively high photoelectric response performance and conversion performance. The method is simple in process, easy to control and high in production efficiency.

Description

technical field [0001] The invention relates to a two-dimensional adjustable SnSSe porous nano sheet and its preparation and application. Background technique [0002] SnSe 2 It is a new type of two-dimensional optoelectronic material with high conductivity and controllability. It has been reported that two-dimensional nanosheet SnSe can be obtained by hydrothermal synthesis. 2 . SnS 2 It is also a two-dimensional optoelectronic material. Recently, studies have shown that ternary SnSSe compounds compared to binary SnSe 2 , SnS 2 As a result, it has more excellent photoelectric conversion and catalytic performance. There is no report of obtaining two-dimensional SnSSe porous nanosheets with adjustable selenium-sulfur ratio. The inventors found that if an atomic-level preparation scheme can be developed, it is expected to obtain two-dimensional adjustable SnSSe porous nanosheets. Therefore, the present invention provides a mature and reliable method to prepare two-dimen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/00B82Y40/00G01J1/42
Inventor 熊小山张峻陈超
Owner HANGZHOU DIANZI UNIV
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