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SnS2 nanosheet as well as preparation method and application thereof

A nano-sheet and sheet-like technology, which is applied in the field of SnS2 nano-sheet preparation, can solve problems such as lack of research, and achieve the effects of low cost, short adsorption equilibrium time, and simple process preparation

Inactive Publication Date: 2014-10-15
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Preparation of SnS with special two-dimensional structure 2 Nanosheets have the superior performance of strong adsorption and strong visible light catalytic degradation. There is no relevant research at present.

Method used

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  • SnS2 nanosheet as well as preparation method and application thereof
  • SnS2 nanosheet as well as preparation method and application thereof
  • SnS2 nanosheet as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of SnS 2 The preparation method of nano sheet, comprises the following steps:

[0029] (1) Dissolve 2mmol sodium diethyldithiocarbamate trihydrate (copper reagent) in an acidic solution mixed with 25mL ethylene glycol and 5mL glacial acetic acid, then add 1mmol SnCl 4 ·5H 2 O, continued to stir for 10 min to a colorless solution.

[0030] (2) The liquid was then transferred to a 50 mL polytetrafluoroethylene-lined stainless steel reactor, sealed and heated at 160 °C for 12 h, and cooled to room temperature naturally. The yellow precipitate was collected by centrifugation, washed several times with deionized water and absolute ethanol, and finally dried in a vacuum oven at 60 °C for 12 h.

[0031] Product structure and morphology characterization

[0032] Use Rigaku TTRIIII X-ray powder diffractometer to carry out phase identification to embodiment 1 gained product (Cu target), as figure 1 shown. Compared with the JCPDS standard card (83-1705), all the diffr...

Embodiment 2

[0034] A kind of SnS 2 The application of nanosheet adsorption and visible light catalytic degradation of organic dyes, taking methylene blue organic dyes as an example.

[0035] Adsorption test method: the 10mg SnS prepared in Example 1 2 The nanosheets were added to 150mL of 0.025mmol / L methylene blue solution, placed in a dark place, ultrasonicated for 1-2 minutes, and kept stirring with a magnetic stirrer to keep them evenly dispersed in the solution. After 20 min, the adsorption-desorption equilibrium was reached, and a 5 mL sample was taken, centrifuged (10000 rpm, 2 min), and the supernatant was taken. By measuring the spectrogram of ultraviolet absorption, calculate the adsorption amount, which is 66.6%, the result is as follows Figure 6 , 7 shown.

[0036]Photodegradation test method: irradiate the solution after reaching adsorption-desorption equilibrium with a 300W xenon lamp (λ>420nm) as visible light. Take 5mL solution every 10min, after centrifugation (1000...

Embodiment 3

[0038] A kind of SnS 2 The preparation method of nano sheet, comprises the following steps:

[0039] (1) Dissolve 2mmol sodium diethyldithiocarbamate trihydrate (copper reagent) in an acidic solution mixed with 15mL ethylene glycol and 5mL glacial acetic acid, then add 1.9mmol SnCl 4 ·5H 2 O, continued to stir for 10 min to a colorless solution.

[0040] (2) The liquid was then transferred to a 50 mL polytetrafluoroethylene-lined stainless steel reactor, sealed and heated at 140 °C for 15 h, and cooled to room temperature naturally. The yellow precipitate was collected by centrifugation, washed several times with deionized water and absolute ethanol, and finally dried in a vacuum oven at 60 °C for 12 h.

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Abstract

The invention provides an SnS2 nanosheet as well as a preparation method and an application thereof. The SnS2 nanosheet with both high adsorption and a high visible light catalysis degradation property is prepared with simple chemical liquid phase synthesis method. The preparation technology is simple and low in cost. The SnS2 nanosheet which can be applied to both adsorption and visible light degradation has the advantages of high adsorption, short adsorption equilibrium time, high visible light catalysis degradation efficiency, high degradation rate, environment-friendliness and the like.

Description

technical field [0001] The invention belongs to the field of nanomaterial preparation method and cross-application field of environmental chemistry, and specifically relates to SnS having both strong adsorption and strong visible light catalytic degradation performance of organic dyes 2 Nanosheets, preparation methods and applications thereof. Background technique [0002] With the enhancement of people's awareness of environmental protection, the treatment of pollutants brought about by industrialization has been paid great attention, and the application of adsorption and photocatalytic degradation of industrial sewage is more extensive. In terms of adsorption, activated carbon is the most widely used and most widely used adsorbent in industrial sewage treatment at present, but the poor mechanical strength of activated carbon itself, difficult regeneration, low reuse rate and other factors can no longer meet the needs of modern development. Therefore, more practical adsorb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/30C01G19/00B01J27/04B82Y40/00B82Y30/00C02F1/28C02F1/30
CPCY02W10/37
Inventor 吴正翠薛业静李保贰
Owner ANHUI NORMAL UNIV
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