Creation of hydrothermal supported liquid membrane synthesis method for nano material

A technology for supporting liquid membranes and synthesis methods, applied in nanotechnology, chemical instruments and methods, tungsten compounds, etc., can solve the problems of product dispersibility and uniformity of morphology and size that are not as good as some preparation methods, insufficient power, and increased difficulty. , to achieve the effect of easy control of product morphology and structure, adjustable reaction temperature, and wide application range

Active Publication Date: 2018-03-20
TONGJI UNIV
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Problems solved by technology

[0005] However, the dispersion and uniformity of shape and size of the product obtained by hydrothermal reaction are not as good as some preparation methods, such as microemulsion method, template method, and supported liquid membrane technology with flexible control of synthesis conditions, etc.
The hydrothermal reaction process is generally very complicated, which increases the difficulty of exploring the formation mechanism of materials
Moreover, the hydrothermal method generally has strong advantages for the synthesis of nanomaterials such as metal oxides and sulfides, but for those synthesis principles that can instantly complete the reaction once the reaction liquid is mixed, such as the synthesis of metal salt nanomaterials, hydrothermal In terms of the growth and control of its crystals, the method will appear to be somewhat powerless

Method used

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  • Creation of hydrothermal supported liquid membrane synthesis method for nano material
  • Creation of hydrothermal supported liquid membrane synthesis method for nano material
  • Creation of hydrothermal supported liquid membrane synthesis method for nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Construction of a method for synthesizing a hydrothermally supported liquid film.

[0036] Figure 1a It is the various components of the hydrothermal support liquid film synthesis method: 100mL stainless steel hydrothermal kettle, 100mL polytetrafluoroethylene liner, 20mL polytetrafluoroethylene open container and polytetrafluoroethylene hollow cover with four supporting legs.

[0037] The construction process of the hydrothermally supported liquid film synthesis method is as follows:

[0038] (1) The assembly process of the supporting liquid film fixture (such as Figure 1b ): First inject the prepared reaction solution into a 20mL cylindrical open container of polytetrafluoroethylene, then cover the prepared support liquid film on the open container, press the hollow polytetrafluoroethylene cap on it, and tighten the thread, Fix the supporting liquid film firmly at the opening of the container, and then use scissors to cut off the useless part of the supp...

Embodiment 2

[0041] Implementation example 2: Preparation of Cs by hydrothermal support liquid film synthesis method 3 PW 12 o 40 Nanoparticle self-assembled spheres.

[0042] (1) Use an electronic balance to weigh a certain amount of t-BAMBP in a 250mL beaker, add 100mL of a fraction of sulfonated kerosene at 200-220°C with a graduated cylinder, so that the concentration of t-BAMBP is 0.16mol / L, and stir magnetically for 1h. A membrane-forming solution is prepared, and a polytetrafluoromembrane microporous filter membrane with a diameter of 50 mm and a pore diameter of 0.1 μm is soaked in the membrane solution for 12 hours to form a supporting liquid membrane.

[0043] (2) Configure 0.025mol / L of H 3 PW 12 o 40 solution, take 20mL and place it in a 100mL polytetrafluoroethylene liner; configure 0.08mol / L of CsNO 3 Solution, take 20mL in a 20mL polytetrafluoroethylene open container.

[0044] (3) Fix the prepared support liquid film on the opening of the 20mL open container in step ...

Embodiment 3

[0049] Implementation example 3: Preparation of Cs by hydrothermal support liquid film synthesis method 3 PW 12 o 40 polyhedral micro-nanostructures.

[0050] (1) Weigh a certain mass of t-BAMBP in a 250mL beaker with an electronic balance, add 100mL of the fraction of sulfonated kerosene at 200-220°C with a graduated cylinder, so that the concentration of t-BAMBP is 0.08mol / L, and stir magnetically for 1h. A membrane-forming solution is prepared, and a polytetrafluoromembrane with a diameter of 50 mm and a pore diameter of 0.22 μm is soaked in the membrane solution for 12 hours to form a supporting liquid membrane.

[0051] (2) Configure 0.025mol / L of H 3 PW 12 o 40 solution, take 20mL and place it in a 100mL polytetrafluoroethylene liner; configure 0.08mol / L of CsNO 3 Solution, take 20mL in a 20mL polytetrafluoroethylene open container.

[0052] (3) Fix the prepared support liquid film on the opening of the 20mL open container in step (2) with four PTFE support feet a...

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Abstract

The invention relates to creation of a hydrothermal supported liquid membrane synthesis method for a nano material, being a new nano material synthesis technology. By selecting an appropriate supporter, a membrane solvent and a carrier and designing a fixing device for a supported liquid membrane in a hydrothermal environment, the hydrothermal supported liquid membrane synthesis method for the nano material is created, and combination of a hydrothermal method and a supported liquid membrane method is realized, so that the two methods are effectively and synergistically carried out when the nano material is synthesized, and one complete nano material synthesis system is formed. The system overcomes the defects of the supported liquid membrane method that the supported liquid membrane methodonly can be applied to a normal temperature environment, reaction rate is low and yield is low and also overcomes the limitation of the hydrothermal method applied to synthesis of a metal salt type nano material. The system has the advantages of simple operation, mild conditions, adjustable reaction temperature, easy-to-control product morphology and structure and wide application range and is acomprehensive nano material synthesis method.

Description

technical field [0001] The invention belongs to the field of micro / nano material preparation technology and nano functional material, and specifically relates to the synthesis technology of nano material: the synthesis method of hydrothermal support liquid film of nano material. Background technique [0002] Supported liquid membrane technology is a new method for preparing nanomaterials. The characteristics of its reaction at room temperature make the reaction conditions very mild, and it has the advantages of convenient operation, simple experimental equipment, wide application fields, and the ability to control the particle size of particles and products. Shape, dimension, size and other advantages. At present, this technology has gradually attracted the attention and great interest of researchers. The membrane transfer function of the supported liquid membrane technology, the template function of the porous support, the crystal growth modifier function of the organic fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G41/00B82Y40/00C08J9/40C08L27/18
CPCC01G41/006C01P2004/03C01P2004/16C01P2004/30C01P2004/32C01P2004/64C08J9/40C08J2327/18
Inventor 吴庆生王涛刘玉玲昝广涛
Owner TONGJI UNIV
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