Preparation method of composite hollow silicate

A silicate and hollow technology, which is applied in the field of silicate, can solve the problems of less research on composite hollow silicate materials, and achieve the effects of easy post-processing, mild reaction conditions, and simple synthesis reaction devices

Inactive Publication Date: 2010-10-13
XIAMEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, many works are focused on the synthesis of silicates with different morph

Method used

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  • Preparation method of composite hollow silicate
  • Preparation method of composite hollow silicate
  • Preparation method of composite hollow silicate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Add 10mL water, 5mL ethanol in 25mL polytetrafluoroethylene liner, then add 25mgFe 3 o 4 @SiO 2 , 0.675g urea and 0.064g magnesium nitrate hexahydrate were added. Put the polytetrafluoroethylene liner in the reaction kettle, and keep the temperature at 190°C for 36h. After the reaction was completed and cooled to room temperature, the obtained solid product was washed three times with water and ethanol respectively to obtain the target product. The morphology of the product was systematically studied by transmission electron microscope analysis technology. like figure 1 The obtained Fe can be analyzed by transmission electron microscopy characterization as shown 3 o 4 It is a composite hollow product with core and magnesium silicate as shell.

Embodiment 2

[0021] Example 2: Add 10mL water and 5mL ethanol to 25mL PTFE lining, and then add 25mgAu@SiO 2 , 0.675g urea and 0.073g nickel nitrate hexahydrate were added. Put the polytetrafluoroethylene liner in the reaction kettle, and keep the temperature at 190°C for 36h. After the reaction was completed and cooled to room temperature, the obtained solid product was washed three times with water and ethanol respectively to obtain the target product. The morphology of the product was systematically studied by transmission electron microscope analysis technology. like figure 2 The resulting composite hollow product with Au as the core and nickel silicate as the shell can be analyzed by transmission electron microscopy.

Embodiment 3

[0022] Embodiment 3: add 10mL water, 5mL ethanol in 25mL polytetrafluoroethylene liner, then add 25mgFe 3 o 4 / Pd, 0.675g urea and 0.064g magnesium nitrate hexahydrate were added. Put the polytetrafluoroethylene liner in the reaction kettle, and keep the temperature at 190°C for 36h. After the reaction was completed and cooled to room temperature, the obtained solid product was washed three times with water and ethanol respectively to obtain the target product. The morphology of the product was systematically studied by transmission electron microscope analysis technology. like image 3 The composite hollow product with Fe3O4 / Pd as the core and magnesium silicate as the shell can be analyzed by transmission electron microscopy.

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Abstract

The invention provides a preparation method of composite hollow silicate, which relates to silicate. The invention provides the preparation method of the composite hollow silicate which has simpler process and is synthesized under the heat condition of a solvent. The preparation method comprises the following steps of: adding water and ethanol into MaSiO2, urea and nitrate hexahydrate and keeping constant temperature at the temperature of 170 to 190 DEG C for 4 to 36h, wherein the mixture ratio of the MaSiO2 to the urea is 1:(13.5 to 27) according to the mass ratio, the mixture ratio of magnesium nitrate hexahydrate to the urea is 1:(30 to 100) according to the mole ratio, and M is metal, metal oxide or metal oxide/metal; and after cooling a reaction product obtained in the step (1) to room temperature, washing the obtained solid product so as to obtain a target product of the composite hollow silicate.

Description

technical field [0001] The invention relates to a silicate, in particular to a method for preparing a composite hollow silicate by solvothermal. Background technique [0002] With the development of nanomaterials, submicron / nanoscale hollow materials have attracted more and more attention. Hollow materials are expected to have broad applications in catalysis, controlled release, and sewage treatment. Composite hollow materials not only have the properties of hollow materials, but also introduce the interior of hollow materials into other different types of materials. By changing the inner core, they can open up distinctive properties, and have a wide range of applications in many fields such as chemistry, physics and materials science. prospect. In recent years, there has been a great deal of research on the synthesis of composite hollow materials. However, the synthesis of composite hollow materials often requires a lot of complicated processes, and is often accompanied ...

Claims

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Application Information

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IPC IPC(8): C01B33/20B82B3/00
Inventor 江智渊郑君吴炳辉黄荣彬
Owner XIAMEN UNIV
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