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Nano sulfur sol, and preparation method and application thereof

A sulfur sol and nanotechnology, applied in the field of nanomaterials, can solve the problems of instability, high cost, and less dissolved sulfur, and achieve the effects of convenient production and processing, low production cost, and convenient deep processing.

Inactive Publication Date: 2012-02-22
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In summary, the above preparation methods have the following problems: (1) the reaction conditions are harsh and the cost is high; (2) multiple chemical raw materials need to be used, and the reaction is complicated; (3) the solvent used is volatile, unstable, and toxic. And the amount of dissolved sulfur is small; (4) or obtain nano-sulfur powder (solid phase), or form nano-sulfur in the complex system of organic solvent and inorganic solution, which is not conducive to further development and application

Method used

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  • Nano sulfur sol, and preparation method and application thereof
  • Nano sulfur sol, and preparation method and application thereof
  • Nano sulfur sol, and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0051] (1) Take 0.02g of sublimated sulfur and add it to 20ml of polyethylene glycol 200, heat to 125°C, continue to reflux for 1h, and dissolve the sublimed sulfur in polyethylene glycol;

[0052](2) Transfer the reaction system of step (1) to ice water bath at 0°C for 10 minutes to obtain a light yellow nano-sulfur sol, which was left to stand at a constant temperature at 30°C. Get this sol in 30 days and carry out TEM (what adopted is the Philips TECNAI-10 type transmission electron microscope) observation, there is spherical nanometer sulfur (as in visible sol) in the sol Figure 1 ~ Figure 3 ).

Embodiment 2

[0054] (1) Add 0.4g of sublimated sulfur into 20ml of polyethylene glycol 200, heat to 115°C, continue to reflux for 1 hour, and dissolve the sublimed sulfur in polyethylene glycol;

[0055] (2) Transfer the reaction system of step (1) to an ice water bath at 0°C, stir rapidly for 10 minutes, and then undergo high-speed centrifugation to separate and precipitate to obtain a light yellow nano-sulfur sol, which is left to stand at a constant temperature at 30°C, and respectively Get this sol on the 1st day, the 15th day, the 30th day and carry out TEM (what adopted is the Philips TECNAI-10 type transmission electron microscope) observation, visible sol has rod-shaped nanometer sulfur (such as Figure 4 ~ Figure 6 ).

Embodiment 3

[0057] (1) Take 0.02g of sublimated sulfur and add it to 20ml of polyethylene glycol 400, heat to 150°C, continue to reflux for 1h, and dissolve the sublimed sulfur in polyethylene glycol;

[0058] (2) Transfer the reaction system of step (1) to ice water at 0°C for 10 minutes to obtain a light yellow nano-sulfur sol, which was left to stand at a constant temperature at 50°C, and was treated on the 1st day, the 15th day, and the 1st day, respectively. Get this sol in 30 days and carry out TEM (what adopted is the Philips TECNAI-10 type transmission electron microscope) observation, there is spherical nanometer sulfur (as in visible sol) in the sol Figure 7 ~ Figure 9 ).

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Abstract

The invention discloses nano sulfur sol, and a preparation method and application thereof. The method comprises the following steps of: (1) adding a certain amount of sublimed sulfur into polyethylene glycol, heating the mixture to 115 to 150 DEG C, and continuing to perform refluxing for 1 hour to dissolve the sublimed sulfur into the polyethylene glycol; and (2) transferring the reaction systemin the step (1) into ice water of 0 DEG C, performing a water bath for 10 minutes to form the nano sulfur sol under the rapid cooling condition, and standing the sol at the constant temperature of 30to 60 DEG C for 0 to 29 days to obtain the finished product of the nano sulfur sol. The method of the invention has the advantages of simple operation and low production cost; the adopted reagent polyethylene glycol has high sulfur dissolubility, no toxicity, harmlessness and no need of removal from the finished product, and the product does not need the treatment of washing, separation, drying and the like, so changes in the disperse state of nano sulfur in the treatment process are avoided and the effects of the product are effectively ensured; and the prepared nano sulfur-polyethylene glycol sol system is a liquid-phase homodisperse system, and is favorable for further development into a plurality of forms.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a nanometer sulfur sol and its preparation method and application. Background technique [0002] Sulfur and its compounds are important resources. Sulfur element is widely used in chemical industry, rubber, agriculture, medicine, dyestuff, cosmetics, chemical fiber, papermaking and other industrial fields; in addition, sulfur and its compounds also have unique biological activities, such as adsorption of heavy metals, scavenging free radicals, anti-oxidation, anti- Tumor, disinfection, sterilization, etc. [0003] With the development of nanoscience and technology, the preparation, performance and application of nanomaterials have become one of the research hotspots in recent years. The preparation, characteristics and potential applications of nano-sulfur have also attracted the attention of researchers in the fields of chemistry and medicine. As early as 1948, E.M.Zaise...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/02B82B3/00
Inventor 郑文杰郑普生谢新媛陈填烽
Owner JINAN UNIVERSITY
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