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Controllable synthesis and synchronous surface modifying method of MoS2 nanosheet

A technology of nanosheets and mixed solvents, which is applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the undeveloped controllable synthesis of MoS2 nanosheets and surface PEG modification, and the inability to realize the shape of nanosheets Appearance, effective control and other issues, to achieve good blood compatibility and biocompatibility, improve biocompatibility, enhance the effect of colloidal stability

Active Publication Date: 2014-09-10
江苏先进无机材料研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to MoS 2 Nanosheets themselves cannot achieve surface modification by linking with organic carbon chains such as PEG in the way of "π-π conjugation" like graphene-like carbon materials. Therefore, the reported synthesis and surface PEG modification processes are very complicated and difficult. Unable to implement MoS 2 Efficient Control of Nanosheet Morphology
So far, the field has not developed a method that can simultaneously implement the MoS 2 Controllable synthesis of nanosheets and methods for surface PEG modification

Method used

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  • Controllable synthesis and synchronous surface modifying method of MoS2 nanosheet
  • Controllable synthesis and synchronous surface modifying method of MoS2 nanosheet
  • Controllable synthesis and synchronous surface modifying method of MoS2 nanosheet

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Effect test

Embodiment 1

[0064] Weigh 0.3 g of ammonium tetrathiomolybdate (purchased from Changsha Jingkang New Material Technology Co., Ltd.), mix with 60 mL of distilled water, and stir at room temperature for 1 h to obtain a clear and transparent solution. The resulting solution was transferred to a 100 mL volume stainless steel reaction kettle lined with p-polyphenylene and sealed. Put the reaction kettle into a high-temperature oven for heat treatment at 220°C for 12 hours. After naturally cooling to room temperature, the reaction mixture was centrifuged and washed 5 times with 50% ethanolamine solution and distilled water to obtain MoS 2 Nanosheets. TEM observation results ( figure 1 In a) shows that the resulting MoS 2 Presents an irregular lamellar structure. Using Image J1.40G software (http: / / rsb.info.nih.gov / ij / download.html, National Institutes of Health, USA) to measure the diameter of nanosheets (at least 50 sheets), MoS 2 The diameter of the lamellae is 50±10 nm.

Embodiment 2

[0066] Weigh 0.3 g of ammonium tetrathiomolybdate (purchased from Changsha Jingkang New Material Technology Co., Ltd.), mix with 30 mL of distilled water, and stir at room temperature for 1 h to obtain a clear and transparent solution. Then, 30 mL PEG400 (Shanghai Sinopharm Chemical Reagent Co., Ltd.) was added to the above solution, and stirring was continued at room temperature for 1 h. The resulting solution was transferred to a 100 mL volume stainless steel reaction kettle lined with p-polyphenylene and sealed. Put the reaction kettle into a high-temperature oven at 220°C for heat treatment for 12 hours. After cooling to room temperature naturally, the reaction mixture was centrifuged and washed 5 times with 50% ethanolamine solution and distilled water to obtain MoS 2 - PEG nanosheets. TEM observation results ( figure 1 b) shows that the resulting MoS 2 It presents an irregular lamellar structure with a lamellar diameter of 79±15nm. FTIR results ( figure 2 ) indicat...

Embodiment 3

[0068] Weigh 0.15 g of ammonium tetrathiomolybdate (purchased from Changsha Jingkang New Material Technology Co., Ltd.), mix with 30 mL of distilled water, and stir at room temperature for 1 h to obtain a clear and transparent solution. Then, 30 mL PEG400 (Shanghai Sinopharm Chemical Reagent Co., Ltd.) was added to the above solution, and stirring was continued at room temperature for 1 h. The resulting solution was transferred to a 100 mL volume stainless steel reaction kettle lined with p-polyphenylene and sealed. Put the reaction kettle into a high-temperature oven for heat treatment at 220°C for 12 hours. After naturally cooling to room temperature, the reaction mixture was centrifuged and washed 5 times with 50% ethanolamine solution and distilled water to obtain MoS 2 - PEG nanosheets. TEM observation results ( figure 1 In c) shows that the obtained MoS 2 -PEG presents an irregular lamellar structure with a lamellar diameter of 103±22nm. FTIR results ( figure 2 ) i...

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Abstract

The invention relates to a controllable synthesis and synchronous surface modifying method of an MoS2 nanosheet. The method comprises the steps that ammonium tetrathiomolybdate serves as an Mo source and an S source, or the ammonium molybdate serves as the Mo source, the thiourea serves as the S source, the ammonium tetrathiomolybdate or the ammonium molybdate and the thiourea are dissolved in water or the mixed solvent of water and polyethylene glycol, thermal treatment is carried out for 12-18 hours under the temperature ranging from 200 DEG C to 220 DEG C, separating and washing are carried out to obtain the MoS2 nanosheet, and the type and concentration of the Mo source and the S source and / or the adopted solvent are / or controlled so that the size of the MoS2 nanosheet can be controlled.

Description

technical field [0001] The invention belongs to the field of biological nanomaterials, in particular to a MoS with controllable synthesis and simultaneous surface modification 2 Preparation methods of nanosheets. Background technique [0002] Cancer is one of the most dangerous diseases currently threatening human health. According to the "2012 China Cancer Registration Annual Report" released by the National Cancer Registry Center, the probability of death due to cancer among Chinese residents is 13%, with an average of 1 in every 7-8 people dying of cancer. In the past 20 years, cancer in my country has shown a trend of younger age and higher morbidity and mortality in the "third line". Surgery, radiotherapy and chemotherapy are several important means of cancer treatment at present. Surgical treatment adopts local resection of tumor tissue, which usually brings huge trauma to the patient's body and mind. Chemotherapy and radiotherapy are two main means of treating can...

Claims

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Application Information

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IPC IPC(8): C01G39/06B82Y30/00B82Y40/00
Inventor 王世革陈航榕施剑林马明
Owner 江苏先进无机材料研究院
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