Mesoporous high polymer or carbon/silicon oxide nano-composite material with three-dimensional pore canal structure and preparation method thereof

Abstract

The invention discloses a mesoporous high polymer or carbon / silicon oxide nano-composite material with a three-dimensional pore canal structure. The mesoporous high polymer or carbon / silicon oxide nano-composite material is prepared by mixing PDMS-PEO (Polydimethylsiloxane-Poly Ethylene Oxide) and F127 serving as mixed structure directing agents and a phenolic resin performed polymer Resol serving as a carbon source precursor and reacting to obtain an As-made intermediate, and calcining, wherein crystal diffraction peaks of 110, 200, 211, 220, 310, 222 and 321 are shown in the small angle X ray scattering (SAXS) map of the As-made intermediate, and the q value ratio of the diffraction peaks is shown in the specifications. The specific surface area of the mesoporous carbon / silicon oxide nano-composite material with a three-dimensional cubic Imm pore canal structure is 650-1,600m<2> / g, the pore volume range is 0.45-0.63 cm<3> / g, the pore size is 5.0-6.2 nanometers, and the stability of a mesoporous material framework is up to 900 DEG C. The high polymer or carbon / silicon oxide nano-composite material provided by the invention is particularly suitable for the fields of super capacitor electrode materials, adsorbents, catalyst carriers, separation of biomolecules, gas-sensitive materials, optoelectronic devices, hydrogen storage and the like.

Description

technical field [0001] The invention relates to the technical field of new nanometer materials, in particular to a three-dimensional cubic Im m Mesoporous nanocomposite material with channel structure and its preparation method. Background technique [0002] Ordered mesoporous materials are porous materials with regular pore structures and pore diameters ranging from 2 to 50 nm, which are assembled through the interface interaction between organic and inorganic substances based on surfactant molecular aggregates as templates. Mesoporous materials have the following superior characteristics: ①Long-range, that is, mesoscopic horizontal structure and orderly pore structure; ②The pore size distribution is narrow, and the pore size can be continuously adjusted; ③By optimizing the synthesis conditions or post-processing, it can have good thermal stability. and certain hydrothermal stability; ④ extremely high specific surface area, up to 1000~1500 m 2 / g; ⑤The particles have ...

AI Technical Summary

Problems solved by technology

[0006] So far, the use of PDMS-PEO as a template to synthesize porous materials is only reported by N. Husing in 2003, which used PDMS-PEO as a template to synthesize porous oxide Silicon material, but the literature did not characterize the pore structure and properties of the obtained material, that is, it cannot be confirmed that it has an ordered mesoporous structure

Moreover, the use of PDMS-PEO in the synthesis of mesoporous silica materials in this literature does not make much sense. Only when PDMS-PEO is used as a structure-directing agent to synthesize mesoporous carbon / silicon oxide nanocomposites or mesoporous carbon materials can its growth be brought into full play. Advantages such as skeleton stability and increased pore size

Images