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Se-doped Bi2O2S nanosheet

A nanosheet, solution technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effect of high energy band structure, low cost and simple operation

Inactive Publication Date: 2021-10-01
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively few research reports in the direction of nonlinear optics, so the present invention proposes a Se-doped Bi 2 o 2 Preparation method and application of S nanosheets

Method used

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  • Se-doped Bi2O2S nanosheet
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  • Se-doped Bi2O2S nanosheet

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A Se-doped Bi 2 o 2 The preparation method of S nanosheets, the steps are as follows:

[0030] (1) Take 3 mL of deionized water in a beaker, then add 0.08 mL of hydrazine hydrate to the beaker and shake well, then add 0.36 g of lithium hydroxide monohydrate powder, then seal the beaker and put it in an ultrasonic water bath for ultrasonication To form an alkaline solution of hydrazine hydrate, then add 0.0016 g of selenium powder into the beaker, and continue to sonicate until the selenium powder is completely dissolved to obtain wine red solution A;

[0031] (2) Weigh 0.1164 g of bismuth nitrate pentahydrate, dissolve bismuth nitrate pentahydrate in 30 mL of deionized water under stirring, then add 0.0076 g of thiourea, and stir with a magnetic stirrer at constant temperature to make the two Fully dissolve until uniformly mixed to obtain solution B;

[0032] (3) Then add the wine red solution A in the beaker in step (1) to the solution B obtained in step (2), and co...

Embodiment 2

[0037] A Se-doped Bi 2 o 2 The preparation method of S nanosheets, the steps are as follows:

[0038] (1) Take 4 mL of deionized water in a beaker, then add 0.12 mL of hydrazine hydrate to the beaker and shake well, then add 0.36 g of lithium hydroxide monohydrate powder, then seal the beaker and put it in an ultrasonic water bath for Ultrasound to form an alkaline solution of hydrazine hydrate, then add 0.00235 g of selenium powder into the beaker, and continue ultrasonication until the selenium powder is completely dissolved to obtain wine red solution A;

[0039] (2) Weigh 0.1164 g of bismuth nitrate pentahydrate, dissolve bismuth nitrate pentahydrate in 30 mL of deionized water under stirring, then add 0.00685 g of thiourea, and stir with a magnetic stirrer at constant temperature to make the two Fully dissolve until uniformly mixed to obtain solution B;

[0040] (3) Then add the wine red solution A in the beaker in step (1) to the solution B obtained in step (2), and c...

Embodiment 3

[0045] A Se-doped Bi 2 o 2 The preparation method of S nanosheets, the steps are as follows:

[0046] (1) Take 5 mL of deionized water in a beaker, then add 0.16 mL of hydrazine hydrate to the beaker and shake well, then add 0.36 g of monohydrate lithium hydroxide powder, then seal the beaker and put it in an ultrasonic water bath for Ultrasound to form an alkaline solution of hydrazine hydrate, then add 0.0032 g of selenium powder into the beaker, and continue to sonicate until the selenium powder is completely dissolved to obtain wine red solution A;

[0047] (2) Weigh 0.1164 g of bismuth nitrate pentahydrate, dissolve bismuth nitrate pentahydrate in 30 mL of deionized water under stirring, then add 0.0061 g of thiourea, and stir with a magnetic stirrer at constant temperature to make the two Fully dissolve until uniformly mixed to obtain solution B;

[0048] (3) Then add the wine red solution A in the beaker in step (1) to the solution B obtained in step (2), and continu...

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Abstract

The invention discloses a Se-doped Bi2O2S nanosheet as well as a preparation method and the application of the Se-doped Bi2O2S nanosheet. According to the e-doped Bi2O2S nanosheet prepared by adopting a hydrothermal method, under the conditions of a laser with the pulse width of 208 femtoseconds, the wavelength of 800 nanometers and the frequency of 100 kHz, the nonlinear absorption coefficient beta and the third-order polarizability imaginary part Imx (3) value can reach-6.98 * 10 < 3 > cm * GW <-1 > and-5.37 * 10 <-7 > esu at most, the absolute values are several orders of magnitude larger than several typical two-dimensional nonlinear materials MoS2, MoSe2, graphene and black phosphorus. The Se-doped Bi2O2S nanosheet has remarkable third-order nonlinear saturated absorption performance, is an excellent saturable absorber material, and can be widely applied to the fields of ultrashort pulse laser Q-switching, mode locking and the like.

Description

technical field [0001] The invention belongs to the technical field of advanced oxides and new materials, in particular to a Se-doped Bi 2 o 2 S nanosheet and its preparation method and application. Background technique [0002] As the basis of photonics research, nonlinear optics has been widely used in photonic technology. Saturable absorber materials are key components in the formation of photonic devices such as pulsed lasers, optical modulators, and optical switches. With the development of photonic devices, it is necessary to look for third-order nonlinear optical saturable absorber materials with fast response and large nonlinear optical effects. has been the focus of research. [0003] At present, the research hotspots of nonlinear optical materials mainly focus on several representative materials, including graphene, black phosphorus and transition metal chalcogenides (TMDCs). Graphene, as the first two-dimensional material to be produced and studied, has been w...

Claims

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Application Information

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IPC IPC(8): C01G29/00B82Y40/00B82Y30/00
CPCC01G29/00B82Y40/00B82Y30/00C01P2004/80C01P2002/72C01P2004/03C01P2004/22C01P2004/62
Inventor 郑晶莹汪汝赵冲冲陈奇俤詹红兵
Owner FUZHOU UNIV
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