Method for hydrothermal synthesis of SnS2 nano-materials

A technology of hydrothermal synthesis and nanomaterials, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of high cost, high equipment requirements, inconvenient operation, etc., and achieve improved appearance, simple operation and low cost cheap effect

Active Publication Date: 2013-10-30
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After searching the existing literature, it is found that some existing methods are not only expensive, but also inconvenient to operate, and most of the solvents used are organic solvents.
Yang et al. published "Synthesis and characterization of tin disulfide hexagonal nanoflakes via solvothermal decomposition, 2012, 67, 32-34," on Materials Letters in 2012. 4 ·5H 2 Hexagonal SnS was successfully synthesized by solvothermal reaction with O as the tin source and oleylamine as the reaction solvent. 2 Nanomaterials, but this method uses an organic solvent as the reaction solvent, which requires heating at a high temperature of 320°C, and requires vacuum conditions, which requires high equipment requirements, and there are many experimental steps, which is inconvenient to operate
Therefore, a simple and inexpensive method to prepare SnS with controllable morphology and small size in aqueous solution 2 Nanomaterials remain a great challenge

Method used

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  • Method for hydrothermal synthesis of SnS2 nano-materials
  • Method for hydrothermal synthesis of SnS2 nano-materials
  • Method for hydrothermal synthesis of SnS2 nano-materials

Examples

Experimental program
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Embodiment 1

[0027] SnS of this embodiment 2 The synthesis process of nanomaterials is as follows figure 1 As shown, the specific steps are as follows:

[0028] At room temperature, add 0.225g SnCl 2 ·2H 2 O dissolved in dilute hydrochloric acid (2mL concentrated hydrochloric acid, 25mL deionized water), continue to add 0.2mL Triton X-100 (Triton X-100 and SnCl 2 ·2H 2 The molar ratio of O is 0.33:1), the mixture is uniformly mixed by ultrasonic stirring; then 0.075g of TAA is added, and ultrasonic stirring is continued for 30 minutes. The obtained precursor was transferred to a stainless steel reactor lined with polytetrafluoroethylene. React at 180°C for 10h. After the reaction, cool to room temperature naturally, then centrifuge at 8000 rpm, and wash several times with deionized water and absolute ethanol, and dry to obtain SnS 2 . SnS 2 The ultraviolet absorption spectrum of nanomaterials dispersed in ethanol is shown as figure 2 Shown. SnS prepared 2 The projection electron microscope...

Embodiment 2

[0033] SnS of this embodiment 2 The synthesis process of nanomaterials is as follows figure 1 As shown, the specific steps are as follows:

[0034] 0.225g SnCl 2 ·2H 2 O dissolved in dilute hydrochloric acid (2mL concentrated hydrochloric acid, 25mL deionized water), continue to add 0.61mL Triton X-100 (Triton X-100 and SnCl 2 ·2H 2 The molar ratio of O is 1:1), the mixture is uniformly mixed by ultrasonic stirring; then 0.078 g of sodium sulfide is added, and the ultrasonic stirring is continued for 30 minutes. The obtained precursor was transferred to a stainless steel reactor lined with polytetrafluoroethylene. Reaction at 140°C for 12h. After the reaction, it was cooled to room temperature naturally, then centrifuged at 20000rpm, washed several times with deionized water and absolute ethanol, and dried to obtain SnS 2 nanomaterials.

Embodiment 3

[0036] SnS of this embodiment 2 The synthesis process of nanomaterials is as follows figure 1 As shown, the specific steps are as follows:

[0037] 0.225g SnCl 2 ·2H 2 O dissolved in dilute hydrochloric acid (2mL concentrated hydrochloric acid, 25mL deionized water), continue to add 0.06mL Triton X-100 (Triton X-100 and SnCl 2 ·2H 2 The molar ratio of O is 0.1:1), the mixture is uniformly mixed by ultrasonic stirring; then 0.075g of TAA is added, and ultrasonic stirring is continued for 30 minutes. The obtained precursor was transferred to a stainless steel reactor lined with polytetrafluoroethylene. React at 200°C for 10h. After the reaction, cool to room temperature naturally, then centrifuge at 10000rpm, wash several times with deionized water and absolute ethanol, and dry to obtain SnS 2 nanomaterials.

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Abstract

The invention discloses a method for hydrothermal synthesis of SnS2 nano-materials. The method comprises the following steps of: taking SnCl2.2H2O as a Sn source, performing hydrothermal synthesis reaction with a sulfur source under the auxiliary function of a surfactant, and regulating and controlling the type and using quantity of the surfactant as well as the time and temperature of the hydrothermal synthesis reaction to obtain the SnS2 nano-materials with different appearances and sizes. Compared with the prior art, the method disclosed by the invention adopts a hydrothermal method to synthesize the SnS2 nano-materials, the process is simple, and the SnS2 nano-materials with different appearances and sizes can be obtained by regulating and controlling the type and using quantity of the surfactant, the reaction time, the temperature and other conditions; and furthermore, the cost is low, and the method is suitable for commercial production.

Description

Technical field [0001] The invention belongs to the technical field of nano material preparation, and specifically relates to a hydrothermal synthesis of SnS 2 Nanomaterials approach. Background technique [0002] As a typical semiconductor material, metal sulfide, especially late transition metal sulfide, has been widely used in nonlinear optics, electronics, luminescence, catalysis, energy storage and conversion due to its unique structure. Especially SnS 2 As an important n-type semiconductor, it has a layered hexagonal CdI 2 The crystal structure, which is a sandwich structure composed of two tightly arranged S and Sn ions sandwiched by weak van der Waals forces between the layers is similar to the structure of the graphite sheet, but it has a higher capacity than the graphite sheet , Up to 645.4mAh g -1 , So it is considered to be a very prerequisite material to replace carbon-based negative electrodes. In addition, SnS 2 Inexpensive and non-toxic, it has great application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/00B82Y40/00B82Y30/00
Inventor 张亚非耿会娟苏言杰李忠丽张耀中
Owner SHANGHAI JIAO TONG UNIV
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