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Preparation and adsorption property of novel inverse-opal hierarchical porous N-doped carbon microspheres
- Source :
- Chinese Chemical Letters. 32:866-869
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- The design of pore structure is the key factor for the performance of porous carbon spheres. In this work, novel micron-sized colloidal crystal microspheres consisting of fibrous silica (F-SiO2) nanoparticles are firstly prepared by water-evaporation-induced self-assembly of F-SiO2 nanoparticles in the droplets of an inverse emulsion system to be used as sacrificial templates. Acrylonitrile (AN) was infiltrated in the voids of the F-SiO2 colloidal crystal microspheres, and in-situ induced by 60Co γ-ray to polymerize into polyacrylonitrile (PAN). After the PAN-infiltrated F-SiO2 colloidal crystal microspheres were carbonized and etched with HF solution, novel micron-sized inverse-opal N-doped carbon (IO-NC) microspheres consisting of hollow carbon nanoparticles with a hierarchical macro/meso-porous inner surface were obtained. The IO-NC microspheres have a specific surface area as high as 266.4 m2/g and a molar ratio of C/N of 5. They have a good dispersibility in water, and show a high adsorption capacity towards rhodamine B (RhB) up to 137.28 mg/(g microsphere). This work offers a way to obtain novel micron-sized hierarchical macro/meso-porous N-doped carbon microspheres, which opens a new idea to prepare high-performance hierarchical porous carbon materials.
- Subjects :
- Materials science
technology, industry, and agriculture
Polyacrylonitrile
Nanoparticle
chemistry.chemical_element
02 engineering and technology
General Chemistry
Colloidal crystal
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
chemistry.chemical_compound
Adsorption
chemistry
Chemical engineering
Specific surface area
Rhodamine B
Acrylonitrile
0210 nano-technology
Carbon
Subjects
Details
- ISSN :
- 10018417
- Volume :
- 32
- Database :
- OpenAIRE
- Journal :
- Chinese Chemical Letters
- Accession number :
- edsair.doi...........c45a4b84517b0b691611f3500330109d