Polymer with hollow core-shell structure and preparation method thereof

Abstract

The application discloses a polymer with a hollow core-shell structure and a preparation method thereof. The polymer with a hollow core-shell structure includes resorcinol-formaldehyde resin; the shape is spherical, including a polymer core and a polymer shell. The preparation method of the polymer with hollow core-shell structure at least includes the following steps: (1) obtaining an initial mixture, comprising lower alkanol, water, ammonia, resorcinol and formaldehyde in the initial mixture; lower alkanol, water, NH 3 ·H 2 O, the molar ratio of resorcinol and formaldehyde is 19.5~39:315~630:1:3.3~6.6:7.3~14.6; (2) put the initial mixture in the reaction temperature range of 25~35℃ to react a lot After 16 hours, the obtained solid product was a polymer with a hollow core-shell structure. The preparation method has simple process, low cost, does not use any template agent, has strong practicability and good industrial application prospect.

Description

technical field [0001] The application relates to a polymer with a hollow core-shell structure and its preparation method and application, belonging to the field of material synthesis. Background technique [0002] Organic polymers and their corresponding carbon materials are widely used in catalytic conversion, adsorption separation, and electrochemical fields due to their rich functional groups, good chemical stability, and huge specific surface area. Designing these materials into a special configuration can not only give full play to the characteristics of the material itself, but also endow the material with some new functions. [0003] The hollow core-shell structure (yolk-shell) is a special kind of material configuration. Its inner and outer surfaces and cavity structure may provide different chemical environments for guest molecules or additional components. In the fields of catalyst design and biomedicine, etc. All have excellent performance, and it is also one of...

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Problems solved by technology

The characteristic of the synthesis process of these materials is that a sacrificial template must be used, and the template is removed by etching or baking to obtain a hollow structure, which increases the complexity of the synthesis process.

Wu et al. (J.Am.Chem.Soc., 2009, 131, 2774) used betaine dodecylsulfonate and sodium dodecylbenzenesulfonate as a template to synthesize a series of silica-coated The hollow core-shell material, although the synthesis process is simplified, requires the use of expensive surfactants, so it is not suitable for large-scale applications

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